You just planted a young apple tree in the backyard and the bare circle of mulch around the trunk looks lonely. The right understory plants will fertilize the soil, attract pollinators when the apple blooms, repel codling moth, and feed you a second harvest from the same square footage. The wrong understory plants will compete with the roots, shelter rodents that girdle the bark in winter, and steal nitrogen the tree needs to set fruit.
This guide covers what to plant under apple trees, how far from the trunk to place each plant, and the 7 functional roles that make an apple guild work. Numbers come from Oregon State Extension, Montana State, the US Apple Association, and peer-reviewed orchard ecology research.
Key Takeaway
An apple tree guild is a community of plants that fill 7 functional roles around the tree: nitrogen fixer, nutrient accumulator, pest repeller, pollinator attractor, insectary plant, suppressor groundcover, and mulch maker. The best beginner combination is white clover groundcover, comfrey at the drip line, chives or garlic near the trunk, and a clump of yarrow plus borage 4 to 6 ft (1.2 to 1.8 m) out. Avoid planting brassicas, grass turf, or anything attractive to rodents. Place most plants at or just inside the drip line, not pressed against the trunk.
What is an apple tree guild
An apple tree guild is a polyculture of mutually beneficial plants grouped around a fruiting tree. The concept was formalized by Bill Mollison and developed further by Dave Jacke and Eric Toensmeier in Edible Forest Gardens. Each plant in the guild performs at least one function that the tree benefits from: fixing nitrogen, attracting pollinators, mining deep minerals, deterring pests, or suppressing weeds.
The pattern matters because apple trees are heavy feeders that benefit from continuous nitrogen and active soil biology. A bare circle of woodchip mulch is fine. A guild does more for the tree and rewards you with bee forage, cut flowers, herbs, and edible greens from the same footprint. For broader context see our 12 permaculture principles guide.
The 7 functional roles of an apple guild
Each role can be filled by one or several plants. You do not need every plant on this list. You need at least one plant in each role.
| Role | What it does | Best plants for apple guilds |
| Nitrogen fixer | Hosts rhizobia bacteria that pull atmospheric N into the soil | White clover, red clover, lupine, bush bean, goumi |
| Nutrient accumulator | Deep taproots mine subsoil minerals, leaves become mulch | Comfrey, dandelion, yarrow, dock, chicory |
| Pest repeller | Aromatic foliage confuses or repels apple pests | Chives, garlic, onion, tansy, nasturtium, mint (contained) |
| Pollinator attractor | Flowers in or near apple bloom feed bees and hoverflies | Borage, bee balm, calendula, phacelia, sweet alyssum |
| Insectary plant | Umbel flowers shelter parasitic wasps and lacewings | Dill, fennel, yarrow, queen anne's lace, cilantro |
| Suppressor groundcover | Dense cover crowds out grass that competes for water | Strawberry, white clover, creeping thyme, sweet woodruff |
| Mulch maker | Produces fast biomass for chop-and-drop around the tree | Comfrey, sorrel, daylily, large-leaf cardoon |
Source: Functional categories adapted from Bill Mollison Permaculture: A Designers' Manual and from Fedco Seeds 10 Orchard Companions recommendations.
Where to place each plant
The drip line is the imaginary circle on the ground directly below the outermost branches. Most apple feeder roots are concentrated just inside that line, so this is where guild plants do their work without sitting on the trunk. For a young dwarf apple this is roughly 3 to 4 ft (0.9 to 1.2 m) from the trunk; for a mature standard tree it can be 12 to 15 ft (3.7 to 4.6 m) out.
Why This Works (the permaculture lens)
A bare mulched circle around an apple tree is a vacuum that grass and weeds rush to fill. A diverse guild fills the same vacuum with plants that pay rent: clover hands the tree nitrogen, comfrey mines potassium from 6 ft (1.8 m) down and drops it on the surface as mulch, alliums confuse pests by scent, and borage brings bees in for the apple bloom. The same square footage that fed one tree now feeds a tree, bees, you, and the soil. This is what Bill Mollison meant by "each element performs many functions."
The trunk zone (0 to 18 inches / 0 to 45 cm)
Keep the immediate 6 to 12 in (15 to 30 cm) ring around the trunk free of plants, mulch, and tall grass. This air gap prevents bark rot and removes vole habitat. Beyond that gap and out to 18 in (45 cm), plant pungent alliums: chives, garlic, garlic chives, or shallots. Their sulfur compounds confuse the apple maggot fly and discourage voles from chewing the trunk in winter.
The middle ring (18 in to drip line)
This is where your nitrogen fixer and groundcover work. Sow white clover (Trifolium repens) as a living mulch. Add a strawberry patch on the sunny south side. Tuck a daffodil bulb cluster on the north side to mark spring and repel deer and voles.
The drip line ring
Place 1 to 3 comfrey plants (Symphytum × uplandicum, the sterile Bocking 14 cultivar) at the drip line. Chop the leaves 3 to 4 times per season and drop them at the trunk as mulch. Add a clump of yarrow (Achillea millefolium) for insectary umbels. Plant borage (Borago officinalis) at the drip line for late-spring bee forage.
The outer ring (beyond drip line)
This is bonus space. Plant dill, fennel, calendula, phacelia, bee balm, and other pollinator support. Add a small fruit shrub like serviceberry, gumi, or seaberry to extend the bloom window.
Nitrogen fixers that work under apples
Apple trees need 0.5 to 1 lb (225 to 450 g) of actual nitrogen per year for a mature standard tree. The Orchard Project's nutrient guide documents that white clover living mulch can supply 50 to 100 lb (23 to 45 kg) of N per acre per year through symbiotic fixation, equivalent to providing a substantial share of a backyard orchard's nitrogen needs.
Practical options for the home orchard:
- White clover (Trifolium repens): best all-purpose living mulch, shade-tolerant, mowable
- Red clover (Trifolium pratense): taller, more drought-tolerant, blooms longer for bees
- Lupine (Lupinus perennis): perennial nitrogen fixer for the outer ring, beautiful spring bloom
- Bush bean: annual fixer, plant in early summer, harvest beans, leave roots in soil
- Goumi (Elaeagnus multiflora): large nitrogen-fixing shrub for outer ring, edible berries
Comfrey: the workhorse of the apple guild
Comfrey deserves its own section because it does four jobs at once: nutrient accumulator, mulch maker, pollinator forage, and physical barrier. Russian comfrey (Symphytum × uplandicum) sends a taproot 6 to 10 ft (1.8 to 3.0 m) deep, mining potassium, calcium, and phosphorus that surface plants cannot reach.
Plant the sterile Bocking 14 cultivar specifically, because it does not self-seed and will not invade the rest of the yard. Place 1 plant per dwarf apple and 2 to 3 plants per standard apple at the drip line. Cut the leaves 3 to 4 times per growing season and drop them at the trunk: this is the chop-and-drop technique, covered in our chop and drop mulching guide.
Pest-repelling alliums
Apple growers in cooler climates fight 4 main pests: codling moth (Cydia pomonella), apple maggot (Rhagoletis pomonella), aphids, and voles in winter. The allium family (chives, garlic, garlic chives, walking onion) addresses several of these at once.
Oregon State Extension's fruit tree IPM page documents that codling moth controls work best as a multi-pronged strategy: pheromone traps, sanitation, and habitat that supports natural predators. Aromatic alliums around the trunk add another disruption layer to that strategy, and they make winter trunk-chewing rodents less interested.
Practical plan: ring 6 to 10 chive plants in a wide circle 12 to 18 in (30 to 45 cm) from the trunk. Let them flower in late spring (small purple globes attract early bees). Cut them back after flowering, and they will rebloom.
Pollinator support during apple bloom
Apple trees are mostly self-incompatible, so they need bees moving pollen from one variety to another. The US Apple Association's pollinator best practices PDF emphasizes that managed honeybees plus wild native bees (mason bees, bumblebees) together produce the best fruit set, and that flower diversity in and around the orchard supports the wild bee populations doing much of the work.
A peer-reviewed review in Managing Floral Resources in Apple Orchards for Pest Control (PMC) synthesizes 66 studies showing that flowering understory plants support natural enemies of apple pests and increase pollination services. Plant for sequential bloom:
| Bloom window | Best guild flowers |
| Early spring (before apple bloom) | Daffodils, crocus, chives, dandelion |
| Apple bloom (April-May) | Borage, calendula, phacelia, sweet alyssum |
| Early summer | Yarrow, dill, fennel, bee balm |
| Late summer | Goldenrod, anise hyssop, calendula re-bloom |
Source: Bloom sequence adapted from Fruition Seeds' companion plants for the orchard and US Apple pollinator data.
The 6-step apple guild plan
Mark the drip line
Stand at the trunk and look up at the outermost branches. The shadow on the ground at noon traces the drip line. Mark it with stakes or a hose to plan around.
Clear the bark zone
Keep a 6 to 12 in (15 to 30 cm) bare ring around the trunk. No mulch piled against the trunk, no plants closer than 6 in (15 cm). This prevents rot and vole damage.
Seed the living mulch
Broadcast white clover seed across the area between the bark zone and the drip line. Rake in lightly and water.
Plant the trunk-zone alliums
Ring 6 to 10 chive divisions in a circle 12 to 18 in (30 to 45 cm) from the trunk. Plant 3 to 5 garlic cloves in fall on the same ring.
Set the drip-line workhorses
Plant 1 to 3 Bocking 14 comfrey crowns at the drip line. Add 1 yarrow clump and 2 to 3 borage seedlings on the same circle.
Fill the outer ring
Beyond the drip line, sow dill, fennel, calendula, phacelia. Add a nitrogen-fixing shrub like goumi or serviceberry on the north side for added pollinator forage.
Time: about 3 to 4 hours over a weekend for a single mature tree. Cost: under $50 in seeds, divisions, and starter plants if you source comfrey from a local permaculture group.
What NOT to plant under apple trees
Avoid These Plants and Conditions
Lawn turf grass right up to the trunk. Grass competes hard for water and nitrogen, and harbors voles. Brassicas (cabbage, broccoli, kale). Heavy nitrogen feeders that compete with the apple. Black walnut anywhere within 50 ft (15 m). Juglone suppresses apple growth and other Rosaceae. Mulch piled against the trunk. Mulch volcanoes cause bark rot and invite vole damage; keep mulch pulled back 6 in (15 cm) from the trunk. Aggressive mints unconstrained. Mint works as a pest deterrent but needs a buried pot or root barrier or it will take over. Anything attractive to deer right at apple height. Hostas and daylilies will pull deer through the orchard, which can lead to bark damage on young trees.
Apple guild for small spaces and containers
If you have a dwarf apple in a half-barrel or a small backyard, a scaled-down guild still works. The Cottage Vegetable's mini fruit tree guild guide demonstrates a compact version that fits a 3 ft (0.9 m) radius:
- 1 chive plant on the south side of the trunk
- 1 strawberry plant on the east side
- 1 small comfrey (or yarrow if comfrey is too aggressive for the space)
- White clover seed throughout
- 2 to 3 daffodil bulbs on the north side
This mini-guild covers nitrogen fixation, pest repulsion, pollinator forage, and a small edible groundcover from one container or one tiny circle around the trunk.
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Read the Free GuideFrequently Asked Questions
What is the best companion plant for apple trees?
If you only plant one thing, plant white clover (Trifolium repens) as a living mulch from the bark zone to the drip line. It fixes nitrogen, suppresses grass, feeds pollinators when it flowers, and survives mowing. After clover, comfrey at the drip line is the highest-leverage second pick.
What should you not plant near apple trees?
Avoid black walnut (juglone toxicity within 50 ft / 15 m), grass turf right up to the trunk (competes for water and shelters voles), heavy nitrogen-feeding brassicas in the same root zone, mulch piled against the trunk, and aggressive mints without a root barrier.
Can you plant flowers under apple trees?
Yes. Flowers are central to a good apple guild. Borage, calendula, phacelia, sweet alyssum, and bee balm during apple bloom support pollinators. Daffodils and crocus in early spring repel deer and voles. Yarrow and dill umbels later in season attract beneficial predator insects.
What is the apple tree guild in permaculture?
An apple tree guild is a designed community of plants placed around the tree to perform 7 functions: nitrogen fixation, nutrient accumulation, pest repulsion, pollinator attraction, insectary support, weed suppression, and mulch production. The concept was developed by Bill Mollison and elaborated by Dave Jacke and Eric Toensmeier in Edible Forest Gardens.
How far from the trunk should I plant companions?
Keep a 6 to 12 in (15 to 30 cm) bare ring around the trunk. Plant alliums (chives, garlic) 12 to 18 in (30 to 45 cm) from the trunk. Plant nitrogen fixers and groundcover from there out to the drip line. Plant comfrey and large herbs at the drip line. Place the outer ring of pollinator flowers and fruiting shrubs beyond the drip line.
Does clover really help apple trees?
Yes. White clover hosts Rhizobium bacteria that pull atmospheric nitrogen into nodules on its roots. When clover roots die back, that nitrogen becomes available to nearby plants including the apple. A clover living mulch can supply 50 to 100 lb (23 to 45 kg) of N per acre per year, a substantial share of an apple's annual nitrogen budget.
Can apple trees be planted near other fruit trees?
Yes, with adequate spacing. Apples, pears, plums, and cherries can be planted in the same backyard orchard if each tree has its drip line clear of neighbors. Avoid planting apple next to black walnut (juglone) or under the heavy shade of larger nut trees. Two apple varieties planted within 50 ft (15 m) of each other improve cross-pollination and fruit set.
Design Your Backyard Food Forest This Season
The free GrowPerma permaculture starter guide walks you through tree guilds, companion planting, and edible landscape design. Practical steps for weekend gardeners.
Start with the Free GuideResources
- Fruit Tree Integrated Pest Management (Oregon State Extension)
- Managing Floral Resources in Apple Orchards for Pest Control (PMC review of 66 studies)
- Pollinator Best Management Practices for Apples (US Apple Association PDF)
- Managing Codling Moth in the Home Orchard (Montana State Western Agricultural Research Center)
- 10 Companion Plants for the Orchard (Fedco Seeds)
- Companion Plants for the Orchard (Fruition Seeds)
- Fruit Trees Need Their Nutrient Fix (The Orchard Project)
- Companion Plants for Apple Trees Expert Guide (Raintree Nursery)
- Mini Fruit Tree Guild for Small Gardens (The Cottage Vegetable)
- Nitrogen-fixing plants for fruit trees (The Orchard Project)
