Soft landscaping — planting, lawn installation, garden beds, sod, irrigation — looks straightforward but involves real horticultural expertise. The right plant in the right place thrives for decades. The wrong plant, or the right plant in the wrong conditions, fails within a season. Understanding what to ask about plant selection, soil preparation, and long-term maintenance helps you evaluate whether the landscape design being proposed will actually perform — not just look good in the contractor’s photos.

“Plant selection is the most consequential decision in soft landscaping — and the one most often made based on what looks good in the nursery rather than what’s appropriate for the site. A plant that thrives in full sun installed in a shaded north-facing bed will struggle for years before failing. A thirsty plant installed in a drought-prone area will require constant intervention. Ask specifically why each plant is being recommended for your specific conditions.”

— Nadia Petrov, certified landscape professional and hardscape designer with 21 years of experience in residential landscape and hardscape installation in the local area

Questions About Plant Selection

Peaceful outdoor garden scene with potted plants and a small statue under sunny skies.

Why is each plant being recommended for my specific site?

A professional landscape designer selects plants based on site conditions — sun exposure, soil drainage, soil type, and climate zone — not just aesthetics. Ask the contractor to explain why each significant plant in the proposed design is appropriate for your specific conditions:

  • Sun exposure: Full sun (6+ hours/day), part shade (3–6 hours), or full shade (less than 3 hours)?
  • Soil drainage: Well-drained, moist, or wet conditions?
  • Hardiness zone: Is this plant rated for your zone (most regions is Zone 5–6)?
  • Maintenance requirements: Does this plant need regular pruning, deadheading, or seasonal care that’s realistic for your schedule?

What a good answer looks like: A plant-by-plant rationale tied to your actual site conditions — not just “this looks nice.”

Are these plants native, adapted, or non-native?

Native plants are indigenous to your region — they’ve evolved with local soils, rainfall patterns, insects, and wildlife. Once established, they typically require less watering, less fertilizing, and less intervention. They also support local pollinators and wildlife.

Adapted plants are non-native species that perform well in local conditions without being invasive.

Invasive species are non-native plants that spread aggressively and can be difficult to control. Ask specifically whether any proposed plants are listed as invasive in many regions.

A thoughtful landscape designer should be able to speak to the native/adapted/invasive status of proposed plants.

What is the mature size of each significant plant?

Plants that look appropriate at installation can overwhelm a space at maturity. A shrub that’s 2 feet wide in the nursery may be 6 feet wide in ten years. Ask the contractor the mature height and spread of each significant plant, and confirm the spacing accounts for mature size — not nursery size.

Questions About Soil and Site Preparation

Landscape with stone terrace, lush greenery, and overcast skies, ideal for nature themes.

What soil preparation is included?

Quality planting begins with soil preparation. Ask specifically what’s included:

  • Removal of existing weeds or turf from planting areas?
  • Soil amendment with compost or other organic material?
  • Complete soil replacement in areas with poor native soil (compacted, clay-heavy, or debris-filled)?
  • Soil pH testing and amendment if needed?

A contractor who plans to plant directly into existing poor soil without amendment is setting plants up for poor performance.

What a good answer looks like: Specific soil preparation steps tied to the actual condition of your planting areas.

What mulch is being used, and at what depth?

A 2–3″ layer of mulch over planting beds conserves moisture, moderates soil temperature, suppresses weeds, and improves soil biology as it decomposes. Ask:

  • What type of mulch (shredded hardwood, cedar, stone)?
  • What depth?
  • Is it included in the quote?

What a good answer looks like: 2–3″ of quality organic mulch included as standard.

Questions About Lawn and Sod Installation

Is the soil being prepared before sod is laid?

Sod installed on poorly prepared soil — compacted, uneven, without adequate topsoil — will struggle and may fail. Ask what soil preparation is included before sod installation: grading, topsoil depth, and whether the existing soil will be aerated or tilled.

What a good answer looks like: A minimum of 4–6″ of quality topsoil, graded and firmed, before sod is laid.

What sod variety is being used?

Sod varieties have different characteristics — shade tolerance, drought resistance, traffic tolerance, and disease resistance vary by cultivar. Ask what sod variety is being installed and why it’s appropriate for your conditions (sun exposure, expected foot traffic, etc.).

What are the watering requirements immediately after installation?

Newly installed sod requires intensive watering for the first 2–4 weeks — typically twice daily for the first week, tapering off as roots establish. Ask the contractor to explain the watering schedule you’ll need to follow and what happens if adequate watering can’t be provided (e.g., if you’re away).

Questions About Irrigation

Is an irrigation system included or recommended?

For large planting areas or lawns in drought-prone locations, an irrigation system significantly improves plant establishment and long-term survival. Ask whether irrigation is included in the scope, and if not, whether it’s recommended for your situation.

If irrigation is installed, who maintains it?

Irrigation systems require annual startup and winterization, and periodic adjustment as plantings mature and conditions change. Ask who performs this maintenance and at what cost.

Questions About Ongoing Maintenance

What maintenance will these plantings require?

Ask the contractor to describe the ongoing maintenance requirements for the proposed plantings: watering needs after establishment, fertilizing, pruning schedule, seasonal cleanup, and winter protection for marginally hardy plants.

A planting plan that’s beautiful but requires daily attention you can’t provide is not the right plan for your situation.

Do you offer ongoing maintenance services?

Many landscape companies offer ongoing maintenance contracts — spring cleanup, fertilizing, pruning, and fall cleanup. Ask whether this is available and what it costs, as a reference point for understanding the annual maintenance commitment.

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