Installing artificial grass in gardens with trees can be challenging, but with proper planning, a natural and long-lasting result is possible. Trees provide shade and beauty, but they also produce fallen leaves and roots that can affect the installation. In this article, we offer the best tips for laying artificial grass around trees without compromising their growth or the quality of the turf . We also include advanced recommendations on drainage, material selection, edging, and maintenance to ensure a durable and aesthetically pleasing solution for years to come.
Is it possible to install artificial grass in gardens with trees?
Yes, it's entirely possible and beneficial. Artificial grass offers a green appearance year-round, regardless of the amount of sunlight the garden receives. Furthermore, it avoids common problems with natural grass, such as poor growth in shaded areas . However, it's important to follow certain steps to ensure optimal installation without damaging the trees . It's advisable to respect the tree's root collar (the transition zone between the trunk and roots), ensure proper aeration , maintain a breathing zone around the trunk, and plan for drainage that prevents waterlogging at the base.
Before you begin, consider the type of tree and its root system. Species with shallow roots (such as some maples, poplars, or olive trees) require a greater safety margin to avoid cutting or putting pressure on the main roots. Likewise, in hot climates, it's advisable to choose lawns with UV-resistant fibers and infill that reduces surface temperature.
Top tips for installing artificial grass in gardens with trees
1. Evaluate the area before installation
Before installing artificial grass in your garden , it's essential to analyze the location of any trees and the extent of their root systems . Some tree species have shallow roots that can damage the base of the artificial grass, so it's important to consider whether the surface needs to be modified or if a suitable installation system should be chosen.
As a general guideline, plan the area taking into account the canopy projection (drip line) and leave a free ring around the trunk: between 5 and 10 cm in young trees and 15 to 30 cm or more in mature trees. This gap can be finished with flexible edging or rubber pieces that hold the grass in place without touching the trunk.
2. Prepare the ground correctly
Soil preparation is key to avoiding long-term problems. Follow these steps:
- Remove existing vegetation: Remove natural grass and weeds to avoid uneven surfaces.
- Level the ground: Make sure the soil is well compacted to prevent future subsidence.
- Respect the roots of trees: If the roots are very close to the surface, avoid cutting them to avoid affecting the health of the tree.
Additionally, create a slope of 1% to 2% away from the trunk to direct water towards drainage areas. During excavation, remove 7 to 12 cm of soil (depending on the thickness of the base layer) and do not raise the final level above the tree's root collar. Never bury the trunk or cover the ventilation zone with compacted layers.
3. Install an efficient drainage base
Artificial turf needs a proper drainage system to prevent water accumulation, especially near trees. It is recommended to use:
- Sand and gravel base: Allows water to pass through without affecting root growth.
- Geotextile: Prevents the appearance of weeds without impeding the flow of water into the soil.
As a guideline, lay a 5-8 cm layer of 4-12 mm crushed stone or gravel , compacted with a vibratory plate compactor, and then a 2-3 cm layer of washed sand for leveling. Geotextile fabric (150-200 g/m²) can be placed under the gravel or between the gravel and sand to suppress weeds. Placed near the trunk, it reduces compaction and prevents damage to the roots. If the garden is prone to waterlogging, consider installing micro-drainage pipes or a drainage ditch to collect water away from the tree.
4. Cut the artificial grass around the trees
To ensure the lawn fits perfectly around the trees , follow these steps :
- Spread the artificial turf over the area and mark the outline of the trunk with a box cutter.
- Leave a small space around the trunk to allow for root expansion.
- Secure the edges with nails or adhesive to prevent the grass from rising.
A professional trick is to make radial cuts from the center of the trunk outwards and gradually remove the excess wood, ensuring a clean fit. Keep an expansion joint visible (the free ring) and fill it with decorative aggregate or mulch to enhance its appearance and improve water infiltration. For the seams between panels, use joining tape with polyurethane adhesive and ensure the grain direction is consistent across all panels to avoid color variations.
5. Allow aeration and growth of the tree
Trees need access to air and water to stay healthy. To do this :
- Leave an uncovered area around the trunk to allow water absorption.
- Place decorative stones or mulch at the base of the tree to improve aesthetics and maintain humidity.
If you have automatic irrigation, install drippers or drip rings within the free perimeter so that water reaches areas not covered by the turf. Avoid stapling or staking the turf in areas where you suspect the presence of taproots . In species susceptible to fungal diseases, keeping the surface of the drip ring dry and well-ventilated reduces risks.
6. Maintenance of artificial grass in gardens with trees
Although artificial grass requires less care than natural grass, regular maintenance is important , especially in areas with trees :
- Remove dry leaves: Use a soft-bristled rake or leaf blower to prevent buildup.
- Clean periodically: Wash the lawn with water to remove dust and organic debris.
- Check the base of the tree: Make sure the roots don't lift the artificial grass over time.
Additionally, brush the fibers occasionally to restore their upright position , and if you use silica filler , redistribute it after cleaning. For resin or fruit stains, use warm soapy water; for mold caused by persistent shade, apply a mild vinegar solution and rinse. If ant nests appear, lift the fabric slightly, apply a spot pest barrier , and then reattach it.
How to choose the right artificial grass around trees
The choice of material influences the final result. Look for medium-pile fibers (30-40 mm) to combine comfort and easy leaf removal, sufficient DTEX and stitch count for density and realism, plenty of drainage holes , and a breathable backing . In heavily shaded areas, a slightly shorter model facilitates hygiene. If you have pets, opt for 100% breathable backing and alternative fillings (TPE rubber or cork) that reduce odors and temperature.
Edging and finishing around the trunk
To keep the perimeter immaculate, install flexible polyethylene, aluminum, or rubber edging, secured with stakes outside the visible root zone. This guides the lawn mowing and defines the breathing zone . The gap can be filled with decorative gravel, pine bark, or pebbles—materials that allow water infiltration and provide a neat finish.
Common mistakes and how to avoid them
- Cover the neck of the tree: raises humidity and causes rot. Keep the trunk free.
- Over-compact: near roots, it prevents gas exchange. Pack just enough and carefully.
- No slope: Water stagnates. Design a 1-2% slope and drainage outlets.
- Bad unions: Visible joints ruin the effect. Use specific tape and adhesive and align the fibers.
The advantages of installing artificial grass in gardens with trees
The combination of artificial grass and trees offers multiple benefits :
- Green garden all year round: Regardless of the season, the grass maintains its color and appearance.
- Less maintenance: There is no need to water or mow the lawn, which reduces maintenance time.
- Greater resistance: It does not deteriorate with the shade of trees or with falling leaves.
- Avoid areas of dirt and mud: Especially useful in shady gardens where natural grass does not grow well.
As an added benefit, artificial turf minimizes soil compaction around the tree by reducing traffic and mowing, and facilitates weed control if the geotextile is properly installed.
Installing artificial grass in gardens with trees is an excellent way to maintain a green space without the problems associated with natural grass. By following these tips, you can achieve an efficient installation that respects the growth of the trees and ensures an attractive garden year-round. With proper planning and maintenance, artificial grass will become the best solution for a beautiful and functional garden.
When should natural grass be installed?
You can lay natural grass at any time of year, but ideally, it should be done between March and mid-May. This way, the early growth phase of the lawn won't be affected by low temperatures, and there's likely to be enough moisture for the grass to maintain its hold. If you install natural grass in spring, you can expect better resistance to frost, moisture, and weeds than grass laid in autumn. Theoretically, it's also possible to lay grass in summer, between August and October, but water it adequately to compensate for the high temperatures.
When natural grass coexists with trees, choose shade-tolerant mixes (such as fine fescues), slightly raise the mowing height to increase the photosynthetic surface area, and reduce foot traffic near the trunk. Maintain a grass-free mulch ring around the base of the tree to protect roots and facilitate watering.
How to Plant Grass Comfortably: Step-by-Step Instructions
You don't need much experience to sow natural grass yourself, but you will need a little patience. It can take some time for the sown seeds to germinate and for the grass to take root. Grass seeds from cheaper mixes begin to germinate within a few days, but high-quality mixes take at least two weeks to do so.
STIHL professional advice: It's worth paying a higher price and a longer germination period for high-quality natural grass. Besides being more durable and long-lasting, it will require less frequent mowing. After a couple of years, cheaper grasses begin to show problems that can't be fixed even with top-notch care. Therefore, we recommend investing in a high-quality seed mix.
In areas under the canopy, prepare the soil with mature compost , improve infiltration, water deeply but infrequently , and avoid aggressive fertilization near the trunk. If the shade is extreme, consider replacing the grass immediately around the trunk with mulch or more adapted ground cover plants , maintaining the grass from the drip line upwards.
STIHL Tools and Materials Needed
Before purchasing the tools needed to sow natural grass, check if you can rent them at your local DIY store or STIHL specialist dealer.
- Large and small rake, preferably wooden
- Laya
- Paddle
- Wheelbarrow or basket (to collect larger stones)
- Grid or spike roller
- Spreader
- Garden hose with spray nozzle
- Grass seed (approx. 15-20g per square meter) or turf layer (order 10% more than needed for waste)
- Fertilizer
- Motoazada
Complete the kit with a vibrating plate for artificial grass bases, a professional cutter for clean cuts, joining tape , and polyurethane adhesive for flexible seams and edging . This will allow you to tackle both natural seeding and the installation of artificial grass around trees with confidence.
By applying these design criteria, material selection and maintenance, the tree and lawn area will form a balanced whole: the tree breathes and grows healthy, and the lawn —natural or artificial— looks uniform, clean and well-drained all year round.