Design Workshop: 10-Step Site Analysis for a Successful Garden Plan

Landscape designers begin every project with a site survey—assessing soil, wind, existing plants, utilities, and grade changes—to create a scaled drawing that informs the final concept. Whether you're hiring a pro or designing yourself, conducting your own site analysis pays off. DIYers gain a realistic understanding of conditions, avoiding costly mistakes like plants that won't survive or terraces blasted by cold winds. If you hire a designer, your preparedness saves time, money, and ensures the design truly fits your site. Follow this 10-point checklist for a thorough garden site survey.

1. Locate an Existing Site Plan

Start with any existing scaled plan showing property boundaries, house footprint, driveways, and major trees—often available from your local planning department for a fee. Enlarge to a workable scale (1:100 standard; 1:50 for small spaces). Copy or trace it to layer additional data.

2. Or Draw Your Own

No plan? Use graph paper (e.g., one square = one foot). Never assume boundaries are straight—measure from two points. Same for trees and structures. A helper and online measuring tools simplify the process.

3. Map Indoor-Outdoor Connections

Mark living spaces and rooms with garden views on your base plan. This guides placement of features visible from inside and strengthens indoor-outdoor flow.

4. Find North

North orientation reveals sun/shade patterns throughout the day and seasons. Use a north arrow on professional plans or a compass. Track sun movement morning, noon, and evening across seasons. Mark sunniest and shadiest zones on your survey.

5. Document Key Features

Note existing structures (sheds, decks, paving, arbors, pools)—even if you plan to remove them, budgets change. Designate trees and plants to keep. Don't forget underground: gas, power, telecom, and sewer lines dictate where you can plant, excavate, or build. Your planning department may have sewer maps; utility providers can locate cables and gas lines.

6. Assess Grade Changes

Slopes affect outdoor living spaces—seating and tables need level ground. Retaining walls create flat areas but require professional expertise. Relocate cut soil on-site rather than hauling it away. If the site slopes away from the house, walls prevent shading. For beds, follow natural contours with low terracing. Clever planting can disguise slopes.

7. Identify Best and Worst Views

Mark desirable views (a neighbor's tree, distant landmark) and areas needing screening. Views dictate seating placement.

8. Analyze Environmental Conditions

Map sun, wind, shelter, deep shade, rainfall patterns, and dry zones. This determines plant viability and where to site sunny/shady seating.

9. Check Soil Conditions

Good soil should anchor main planting areas; paving areas matter less. Test multiple spots—soil varies within small areas. A pH test (kits at garden centers) helps if you want acid-lovers like azaleas or rhododendrons.

10. Evaluate Drainage

Note damp areas—expensive trees will languish in boggy ground. Test by digging 20-inch holes, filling with water. Quick drainage = free-draining soil. Standing water beyond a couple hours = drainage system needed or choose moisture-loving plants.

Tell us: Have you done a site analysis? Was it helpful? Share in the comments.

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