Landscape Terminology

60+ Essential Terms Explained for Architecture Students

Landscape terminology is the vocabulary used to describe outdoor spaces, planting systems, landforms, site levels, drainage, hardscape elements, and landscape construction. Understanding these terms helps architecture students and professionals interpret landscape drawings, coordinate site development, and communicate design decisions clearly.

In architectural practice, landscape terminology is not limited to plants and gardens. It also includes technical concepts such as contours, spot levels, grading, stormwater runoff, retaining walls, circulation, microclimate, and accessibility. These terms connect the visual character of an outdoor space with its functional and environmental performance.

This guide explains commonly used landscape architecture terms, groups them by application, and demonstrates how they are used in site planning and architectural projects.

What Is Landscape Terminology?

Landscape terminology refers to the technical and descriptive words used in landscape architecture, landscape design, horticulture, site planning, and landscape construction.

These terms describe natural features, planted areas, built outdoor elements, land levels, water movement, vegetation characteristics, and the relationship between buildings and their surroundings.

For example, contour describes a line connecting points of equal elevation on a map, while hardscape refers to constructed landscape elements such as paving, steps, and walls. A swale is a shallow landscape depression designed to convey or manage surface water.

Learning this vocabulary helps students read site plans and helps architects communicate with landscape architects, civil engineers, horticulturists, and contractors.

Main Categories of Landscape Terminology

Landscape terms can be organized into six practical groups.

Category	What It Covers	Examples
Site planning and landform	Shape, levels, boundaries, and site organization	Contour, grading, benchmark, spot level
Planting and vegetation	Plant types, arrangement, growth, and maintenance	Canopy, shrub, ground cover, hedge
Hardscape and construction	Built elements in outdoor spaces	Paving, kerb, retaining wall, trellis
Water and drainage	Surface-water movement and management	Swale, runoff, invert, catch basin
Climate and ecology	Environmental conditions and plant relationships	Microclimate, native plant, habitat, erosion
Circulation and spatial design	Movement, access, enclosure, and views	Avenue, ingress, egress, buffer, screening

1. Site Planning and Landform Terminology

1. Contour

A contour line connects points of equal elevation relative to a specified vertical datum. Contours help architects understand the shape of the existing land and plan proposed changes in ground level.

Architectural application: Existing and proposed contours are used to coordinate building platforms, roads, pathways, retaining walls, and surface drainage.

2. Contour Interval

The contour interval is the vertical difference in elevation between two consecutive contour lines on a topographic drawing.

A smaller contour interval provides more detailed information about changes in terrain, while a larger interval represents broader changes in elevation.

Example: If successive contours are marked 100 m, 101 m, and 102 m, the contour interval is 1 m.

3. Topography

Topography describes the surface form and elevation characteristics of land, including slopes, ridges, depressions, and valleys.

Architectural application: Site topography influences building placement, access, earthwork, retaining structures, views, and drainage.

4. Grading

Grading is the process of shaping land to achieve specified elevations and slopes. It may involve cutting, filling, compacting, and finishing soil.

Architectural application: Grading establishes the relationship between finished floor levels, external ground levels, road levels, entrances, and drainage routes.

5. Spot Level

A spot level is a numerical elevation assigned to a specific point on a drawing.

Spot levels may identify the elevation of a road junction, pavement corner, entrance landing, drain inlet, or finished ground surface.

Important distinction: A contour shows a continuous line of equal elevation; a spot level gives the elevation at an individual point.

6. Benchmark

A benchmark is a reference point with an established elevation used for surveying and construction setting-out.

Project drawings should identify the applicable vertical datum or project benchmark so that site levels can be coordinated consistently.

7. Slope or Gradient

Slope describes how steeply the ground rises or falls over a horizontal distance. It may be expressed as a percentage, ratio, angle, or gradient.

Percentage slope is calculated as:

Slope (%) = (Vertical change ÷ Horizontal distance) × 100

For example, a rise of 0.5 m over a horizontal distance of 10 m gives a slope of 5%.

This is a mathematical example, not a recommendation for an accessible route or a drainage design. Appropriate slopes depend on the project, applicable accessibility requirements, surface conditions, and drainage design.

8. Cut and Fill

Cut and fill are earthwork operations used to modify ground levels.

• Cut: Soil or other material is excavated to lower the ground.
• Fill: Material is placed to raise the ground.

Balanced earthwork may reduce the need to import or dispose of soil, but only when material suitability, contamination, compaction, transport, and site conditions permit.

9. Berm

A berm is a raised strip or mound of earth used to shape a landscape, provide screening, create spatial separation, or influence surface-water movement.

Berms may be planted with trees, shrubs, or grasses. Their slopes and stability must suit the soil and site conditions.

10. Mound

A mound is a localized raised area of ground that creates a small hill or landform.

Difference between a berm and a mound: A berm is often elongated and linear, whereas a mound is commonly more compact or rounded. The terms can overlap in practical landscape design.

11. Retaining Wall

A retaining wall is a structure designed to resist the lateral pressure of soil or other retained material.

Retaining walls may be constructed from reinforced concrete, masonry, stone, gabions, or engineered systems. Their design may require consideration of soil pressure, drainage, foundations, stability, and surcharge loads.

12. Slope Stabilization

Slope stabilization refers to measures used to improve the stability of a slope and reduce the risk of soil movement or erosion.

Possible measures include suitable vegetation, erosion-control products, drainage, soil reinforcement, and engineered retaining systems.

2. Planting and Vegetation Terminology

13. Tree Canopy

The tree canopy is the upper crown of a tree formed by its branches and foliage. Canopy spread is the horizontal extent of the crown.

Canopy size influences shade, outdoor comfort, views, sunlight reaching buildings, and the spatial character of a landscape.

14. Dripline

The dripline is the approximate line on the ground beneath the outer edge of a tree’s crown.

It is a useful reference when assessing planting space, irrigation, and potential construction conflicts. However, important tree roots may extend beyond the dripline.

15. Shrub

A shrub is a woody plant that generally has several stems arising near the base, although growth habits vary among species.

Shrubs are used for planting beds, screening, boundary definition, habitat, and transitions between trees and ground-level vegetation.

16. Herbaceous Plant

A herbaceous plant has non-woody stems that typically die back seasonally in many perennial species. Herbaceous plants include many flowering perennials, annuals, grasses, and culinary herbs.

17. Ground Cover

Ground cover refers to low-growing plants used to cover the soil surface.

Ground-cover planting can help suppress weeds, reduce exposed soil, visually unify planting areas, and contribute to erosion management when the selected species and site conditions are appropriate.

18. Hedge

A hedge is a closely planted row of shrubs or trees that creates a linear boundary or screen.

Hedges may be clipped into a formal shape or maintained in a more natural form.

19. Climber

A climber is a plant that grows upward using supports, twining stems, tendrils, adhesive structures, or other climbing mechanisms.

Climbers may be trained over trellises, pergolas, fences, and suitable wall-support systems.

20. Columnar Plant

A columnar plant has a narrow, upright growth habit relative to its height.

Columnar trees can provide vertical emphasis in formal landscapes, narrow planting strips, and spaces where broad-spreading crowns are unsuitable.

21. Evergreen Plant

An evergreen plant retains foliage throughout the year, although individual leaves are still replaced over time.

Evergreen species are often selected where year-round screening or consistent foliage is desirable. Their performance depends on local climate and species suitability.

22. Deciduous Plant

A deciduous plant sheds its leaves seasonally, usually in response to environmental or biological cycles.

Deciduous trees can provide shade during the growing season and allow more sunlight through their crowns during leafless periods.

23. Native Plant

A native plant is a species indigenous to a particular geographical region or ecosystem.

Native plants may support local ecological relationships, but suitability still depends on the specific species, soil, water availability, exposure, and intended landscape function.

24. Exotic Plant

An exotic plant is a plant introduced outside its native geographical range.

The term does not automatically mean a plant is invasive or unsuitable. Its ecological behaviour, water requirements, and management needs should be evaluated before selection.

25. Naturalised Plant

A naturalised plant is a non-native plant that has established and reproduces in an area without continued cultivation.

Naturalisation does not necessarily mean a species is harmful. However, naturalised species should be assessed for potential ecological impacts.

26. Invasive Plant

An invasive plant is a plant that spreads beyond its intended or introduced range and causes, or is likely to cause, ecological, economic, or other harm.

Landscape specifications should avoid invasive species identified as problematic for the project region and should consider suitable alternatives.

27. Screen Planting

Screen planting is the strategic placement of vegetation to reduce visibility between spaces, soften boundaries, or help manage wind and other environmental effects.

Screening performance depends on mature plant dimensions, foliage density, spacing, seasonal changes, and maintenance.

28. Shelterbelt

A shelterbelt is a row or group of trees and shrubs planted to reduce wind exposure and provide shelter.

Its effectiveness depends on factors such as vegetation height, density, orientation, continuity, and local wind conditions.

29. Nursery

A nursery is a place where plants are propagated, grown, maintained, and prepared for sale or landscape installation.

In project specifications, nursery stock may be described by species, size, root condition, quality, and other procurement requirements.

30. Planting Schedule

A planting schedule is a project document that identifies the plants specified for a landscape scheme.

It commonly records botanical names, plant symbols, quantities, sizes, spacing, and other project-specific requirements. It should be coordinated with the planting plan and technical specification.

3. Hardscape and Landscape Construction Terminology

31. Hardscape

Hardscape refers to constructed or non-living elements within an outdoor environment, such as paving, steps, walls, kerbs, decks, and outdoor furniture.

Hardscape determines much of the circulation network, surface finish, spatial organization, and interface between buildings and outdoor spaces.

32. Softscape

Softscape refers to living landscape components, especially vegetation, together with planted or growing areas and their associated soil.

Trees, shrubs, lawns, ground covers, and planting beds are common examples.

33. Paving

Paving is a finished surface constructed from materials such as stone, concrete, clay pavers, or other suitable products.

Paving specifications should address intended use, surface stability, drainage, slip resistance, maintenance, and accessibility.

34. Kerb or Curb

A kerb is an edging element commonly used along roads, pavements, parking areas, and planted spaces.

Kerbs may separate different surface types, protect planting areas, and help direct runoff. Their configuration should suit pedestrian access and drainage requirements.

35. Edging

Edging is a linear element used to define the boundary between adjacent landscape surfaces or materials.

It may separate a lawn from a planting bed, retain loose gravel, or create a clean transition between paving and soil.

36. Pergola

A pergola is an outdoor structure formed by posts and an open overhead framework.

It can define a seating area, support climbing plants, create a transition between spaces, or provide partial shade. Its actual shade performance depends on the framework, orientation, materials, and vegetation.

37. Trellis

A trellis is an open framework that supports climbing plants.

Trellises may be freestanding or attached to a suitable structure. Fixings, plant growth, maintenance access, and the condition of the supporting surface should be considered.

38. Green Wall

A green wall is a vertical planting system in which vegetation grows on or within a wall-mounted or freestanding support arrangement.

Systems may use climbing plants rooted in the ground or modular growing units with irrigation and drainage provisions.

39. Green Roof

A green roof incorporates a growing system and vegetation over part or all of a roof surface.

A green roof is not simply a planted roof finish. The complete assembly may require waterproofing, root resistance, drainage, filtration, a growing medium, suitable vegetation, and structural assessment.

40. Street Furniture

Street furniture comprises outdoor fixtures such as benches, litter bins, bicycle stands, bollards, and other amenities.

Placement should consider pedestrian circulation, maintenance, accessibility, visibility, safety, and conflicts with trees or underground services.

4. Water, Drainage, and Site Services Terminology

41. Drainage

Drainage is the movement or removal of excess water from the ground or a constructed surface.

Landscape drainage can involve surface grading, channels, pipes, catch basins, infiltration measures, and other systems selected for the site’s conditions.

42. Stormwater Runoff

Stormwater runoff is rainfall or other water that flows over the ground instead of infiltrating into the soil at the point where it falls.

Runoff behaviour is influenced by rainfall, soil characteristics, slope, vegetation, and the extent of impervious surfaces.

43. Swale

A swale is a shallow, elongated depression that conveys surface water and may also slow, filter, or infiltrate runoff.

Vegetated swales can integrate drainage with landscape design. Their suitability depends on grading, soil permeability, expected flows, maintenance, and overflow arrangements.

44. Catch Basin

A catch basin is a drainage structure that collects surface water and directs it into a drainage system.

Depending on its design, it may also collect sediment and debris. Its location should coordinate with surface levels, paving patterns, and maintenance access.

45. Invert Level

The invert level is the elevation of the lowest internal surface of a pipe, culvert, or channel at a specified point.

Invert levels are important for checking gravity drainage, pipe gradients, connections, and discharge levels.

46. Irrigation

Irrigation is the artificial application of water to support plant growth.

Landscape irrigation may use drip systems, sprinklers, or other methods. System selection should consider plant requirements, water availability, climate, soil, and maintenance.

47. Infiltration

Infiltration is the process by which water enters the soil surface and moves into the soil.

It influences how much rainfall can be absorbed on site and how quickly runoff develops. Actual infiltration capacity depends on soil conditions, compaction, moisture, and other factors.

48. Permeable Paving

Permeable paving is a surface system designed to allow water to pass through openings or a permeable surface layer into a suitable underlying construction.

It can support stormwater management where the soil, sub-base, groundwater conditions, loading, and maintenance arrangements are appropriate.

49. Rain Garden

A rain garden is a planted depression designed to receive and temporarily manage stormwater runoff.

Its performance depends on planting selection, soil characteristics, inlet and overflow arrangements, grading, and maintenance.

50. Riprap

Riprap consists of appropriately selected stones placed to protect soil surfaces against erosion caused by flowing water or wave action.

Stone size, grading, foundation preparation, and placement must suit the hydraulic and geotechnical conditions.

51. Erosion

Erosion is the wearing away and movement of soil or rock by processes such as water and wind.

On construction sites, exposed soil and poorly managed runoff can increase erosion. Vegetation, surface protection, drainage, and suitable construction practices may reduce the risk.

5. Climate, Ecology, and Environmental Terminology

52. Microclimate

A microclimate is a localized set of climatic conditions that differs from the surrounding area.

A shaded courtyard, a sun-exposed paved plaza, and a sheltered garden beside a building can experience different temperatures, wind conditions, and moisture levels.

Architects can use microclimate analysis to guide outdoor seating, planting, shade structures, and material selection.

53. Heat Island Effect

The heat island effect occurs when built-up areas become warmer than surrounding areas because of a combination of factors, including heat-storing surfaces, limited vegetation, urban form, and human activities.

Tree shade, suitable vegetation, reflective or lower-heat-storage materials, and other climate-responsive strategies can help reduce some local heat impacts.

54. Biodiversity

Biodiversity refers to the variety of living organisms and the ecological relationships among them.

Landscape planning can support biodiversity through suitable native planting, habitat connections, water-sensitive design, and the protection of existing ecological features.

55. Habitat

A habitat is the environment in which an organism or ecological community lives and obtains the conditions and resources it needs.

A landscape may provide habitat through trees, shrubs, wetlands, soil, water bodies, and connected green spaces.

56. Sustainable Landscape

A sustainable landscape is planned, constructed, and managed to respond to environmental conditions while supporting human use and long-term ecological performance.

Strategies may include appropriate plant selection, efficient irrigation, soil protection, stormwater management, and materials chosen for durability and context.

6. Circulation, Spatial Organization, and Landscape Design Terminology

57. Avenue

An avenue is a road or pathway often associated with a formal alignment of trees.

In landscape design, an avenue can establish a strong visual axis, provide shade, guide movement, and connect important spaces.

58. Ingress

Ingress means entry into a place or space.

In site planning, ingress refers to the means by which pedestrians, vehicles, or service users enter a site or designated area.

59. Egress

Egress means exit from a place or space.

In architectural coordination, egress should be considered alongside circulation, emergency movement, accessible routes, gates, and connections to public areas. Formal exit requirements depend on applicable regulations and the project.

60. Buffer

A buffer is a zone or element that helps separate incompatible uses or reduces certain impacts between them.

Landscape buffers may use vegetation, earth forms, walls, or combinations of these to address visual exposure, wind, dust, or other site-specific concerns. Performance varies with the design and the type of impact.

61. Screening

Screening reduces or conceals unwanted views using vegetation, walls, fences, or other landscape elements.

Unlike a general buffer, which may address several kinds of impacts, screening usually focuses on visual separation, although the two functions can overlap.

62. Sightline

A sightline is an unobstructed line of vision between an observer and a point of interest.

Sightlines influence the placement of trees, walls, planting beds, seating, entrances, and landscape focal points. They may also be important for visibility at vehicle and pedestrian junctions.

63. Focal Point

A focal point is an element that attracts visual attention and helps organize the perception of a space.

Examples include a specimen tree, sculpture, fountain, pavilion, or framed view.

64. Axis

An axis is an organizing line used to establish alignment and relationships among landscape elements.

An axis may connect an entrance, courtyard, water feature, garden structure, or distant landmark.

65. Circulation

Circulation refers to the movement of people or vehicles through a site.

Landscape circulation includes pedestrian paths, accessible routes, cycle paths, driveways, service routes, and connections between outdoor spaces.

66. Landscape Buffer Planting

Landscape buffer planting is a planting arrangement intended to create separation between different uses or reduce selected environmental impacts.

Its success depends on the mature size and density of plants, seasonal foliage, spacing, site conditions, and maintenance.

67. Xeriscaping

Xeriscaping is a landscape approach intended to reduce the need for supplemental irrigation through appropriate planning, plant selection, soil management, and efficient water use.

It does not necessarily mean a landscape must consist of gravel or contain no lawn. Plant choice should reflect the local climate and intended use.

How Landscape Terminology Is Used in Architectural Drawings

Landscape terms become especially useful when applied to actual drawings and construction documents.

Drawing or document	Terms commonly encountered	Purpose
Site plan	Boundary, setback, circulation, buffer	Organizes buildings and outdoor areas
Topographic survey	Contour, benchmark, spot level	Records existing ground conditions
Grading plan	Finished level, slope, cut and fill	Defines proposed terrain
Planting plan	Canopy, shrub, hedge, ground cover	Locates and identifies vegetation
Planting schedule	Botanical name, size, quantity, spacing	Specifies plant procurement and installation
Hardscape plan	Paving, kerb, edging, retaining wall	Defines constructed outdoor surfaces
Drainage plan	Swale, catch basin, invert level, runoff	Coordinates water collection and conveyance
Landscape details	Trellis, pergola, green wall, edging	Communicates construction and assembly

Practical coordination example

Consider a building entrance adjoining a landscaped forecourt.

The architect must coordinate the finished floor level with the external paving levels. The landscape grading plan establishes the slopes. The drainage design identifies where runoff is collected and discharged. The planting plan locates trees and shrubs while keeping sightlines, pedestrian movement, and service access in view.

A planting bed may appear satisfactory in a landscape plan but still conflict with a drainage pipe, underground utility, or foundation. This is why landscape terminology must be understood together with the relevant drawings and specifications.

Common Mistakes When Using Landscape Terminology

1. Confusing elevation with contour. An elevation is a height relative to a datum; a contour is a line connecting points of equal elevation.
2. Treating all non-native plants as invasive. Exotic and invasive describe different characteristics.
3. Assuming a tree’s roots stop at its dripline. Roots can extend beyond the crown.
4. Using hardscape and softscape interchangeably. Constructed elements and living planting components serve different roles.
5. Designing drainage from contours alone. Detailed grading, flow paths, levels, inlets, outlets, and drainage calculations may also be needed.
6. Ignoring mature plant size. Small nursery plants can become large trees or shrubs and affect buildings, paving, services, and sightlines.
7. Treating a landscape buffer as a guaranteed acoustic barrier. Vegetation alone may not provide the noise reduction required for a particular project.
8. Assuming permeable paving solves every drainage problem. Performance depends on the underlying soil, system design, water table, and maintenance.
9. Using inconsistent level datums. Survey and construction levels must reference an agreed datum.
10. Selecting plants only for appearance. Climate, water requirements, maintenance, ecology, and long-term growth should also influence selection.

Frequently Asked Questions

What is landscape terminology?

Landscape terminology is the vocabulary used to describe landscape features, planting, landform, drainage, hardscape, circulation, and outdoor construction. It helps designers and architects communicate clearly and interpret landscape drawings.

What are the most important landscape terms for architecture students?

Start with contour, contour interval, topography, grading, spot level, benchmark, slope, hardscape, softscape, canopy, planting schedule, drainage, swale, microclimate, and circulation. These terms appear frequently in site analysis and landscape coordination.

What is the difference between hardscape and softscape?

Hardscape consists of constructed landscape elements such as paving, steps, walls, and decks. Softscape refers primarily to living components such as trees, shrubs, lawns, and other planting. A complete landscape design coordinates both.

What is the difference between a contour and a spot level?

A contour line joins points of equal elevation, allowing the shape of the land to be understood. A spot level gives the elevation at one particular point. Both are used to interpret terrain and coordinate grading.

What is the difference between a berm and a mound?

A berm is generally an elongated raised earth form, while a mound is usually a more localized or rounded raised form. Both can create visual interest, screening, or changes in spatial character.

What is a swale in landscape architecture?

A swale is a shallow, elongated depression that guides surface water and may help slow or infiltrate runoff. Its dimensions, gradient, planting, and outlet arrangements must suit the site and drainage design.

What is a planting schedule?

A planting schedule is a document listing the plants specified for a project. It typically identifies species, symbols, quantities, sizes, spacing, and other information needed to coordinate procurement and installation.

Why is microclimate important in landscape design?

Microclimate affects outdoor thermal comfort, plant performance, shade, wind exposure, and water requirements. Understanding local conditions helps designers place trees, seating, pathways, and planting areas more effectively.

What is the difference between native, exotic, naturalised, and invasive plants?

Native plants occur naturally in a particular region. Exotic plants are introduced outside their native range. Naturalised plants have established and reproduce without continued cultivation. Invasive plants spread and cause, or are likely to cause, harm. The categories are related but not interchangeable.

Why is landscape terminology important in architectural practice?

It improves communication between architects, landscape architects, civil engineers, contractors, and other consultants. Consistent terminology helps teams interpret drawings, coordinate levels and services, specify materials, and reduce avoidable construction conflicts.

Conclusion

Landscape terminology provides a common language for understanding and designing outdoor environments. From contours and spot levels to planting schedules, hardscape, swales, and microclimate, each term describes a feature or process that can influence the performance of a site.

For architecture students, the best way to learn these terms is to connect each definition to a drawing or built example. For practicing professionals, consistent terminology supports better coordination between architecture, landscape, civil engineering, drainage, and site construction.

A well-organized landscape glossary should therefore serve as more than a list of definitions: it should help readers interpret drawings, understand design decisions, and apply the vocabulary in professional practice.

References

1. American Society of Landscape Architects (ASLA). Discover Landscape Architecture and educational resources. https://www.asla.org/
2. American Society of Landscape Architects (ASLA). Your Land Magazine: Landscape Architecture Glossary. https://www.asla.org/uploadedFiles/CMS/Education/ASLA_Your%20Land%20Magazine_2024.pdf
3. U.S. Department of Agriculture, Agricultural Research Service. Revised Universal Soil Loss Equation 1.06: Description. https://www.ars.usda.gov/southeast-area/oxford-ms/national-sedimentation-laboratory/watershed-physical-processes-research/docs/revised-universal-soil-loss-equation-106-description-of-rusle106c/
4. U.S. Department of Agriculture, Natural Resources Conservation Service. Conservation Compliance Glossary. https://www.nrcs.usda.gov/resources/guides-and-instructions/conservation-compliance-glossary
5. Google Search Central. Creating Helpful, Reliable, People-First Content. https://developers.google.com/search/docs/fundamentals/creating-helpful-content

Definitions in this article are synthesized for educational use. Project-specific technical requirements, local plant lists, accessibility standards, drainage calculations, and construction specifications should be checked against the applicable authorities and project documents.