How to Grow Legumes (Ground Cover)
Legumes (Ground Cover)
Fabaceae family (various species)
ground coverLegumes used as ground cover include nitrogen-fixing plants like clover, vetch, and bird's-foot trefoil that create dense, low-growing mats while improving soil fertility. These plants form symbiotic relationships with rhizobia bacteria, converting atmospheric nitrogen into plant-available forms. They are valued in sustainable agriculture, permaculture, and ornamental landscaping for erosion control, weed suppression, and ecological benefits.
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Example Legumes (Ground Cover) timeline · Pittsburgh, PA (Zone 6b)
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Plant Legumes (Ground Cover)
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Legumes (Ground Cover)
Around May 17≈ 30 days after planting
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Growing Conditions
Soil
Growing Zones
Find your zone →Most legume ground covers thrive in zones 3-9, with specific species suited to various climate ranges
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Seed Germination
7-14 daysSeeds sprouting with initial cotyledons emerging; tiny seedlings with first true leaves appearing
Keep soil consistently moist but not waterlogged. Protect from heavy foot traffic. Light watering 2-3 times weekly.
Establishment
3-4 weeksYoung plants developing multiple true leaves and establishing root systems; nodulation beginning (nitrogen-fixing bacteria colonizing roots)
Continue moderate watering. Allow some weed competition initially to reduce stress. Do not fertilize with nitrogen.
Vegetative Growth
4-8 weeksDense mat formation with sprawling stems, multiple leaves per node, and established root nodules visible if dug up
Reduce watering frequency; drought tolerance increasing. Light mulching around perimeter acceptable. Minimal maintenance needed.
Flowering
2-4 weeksSmall flowers appearing (white, pink, purple, or yellow depending on species); typically dense flower clusters attracting pollinators
Do not mow if you want seed set and wildlife benefits. Continue normal watering during dry spells.
Mature Ground Cover
Ongoing; perennial or self-seeding annual depending on speciesFully established dense mat with active nitrogen fixation; seed pods developing; mature stand providing erosion control and weed suppression
Mow annually (late fall or early spring) to remove dead material and rejuvenate. Rarely needs irrigation once established. Reseed bare patches if needed.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Mow to disrupt lifecycle; insecticidal soap; encourage natural predators; rarely problematic in ground cover use
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Strong water spray; insecticidal soap; encourage ladybugs and parasitic wasps
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Mow before seed maturity if problematic; generally minor issue in non-seed production settings
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Choose resistant varieties; improve soil biology with compost; rotate with non-legume crops if managing for seed
Uses
Nitrogen Fixation & Soil Improvement
AgriculturalLegume ground covers establish symbiotic relationships with Rhizobium bacteria in root nodules, converting atmospheric nitrogen (N₂) into bioavailable nitrate, enriching soil with up to 100-300 lbs N/acre annually. This eliminates or reduces the need for synthetic nitrogen fertilizers. [source]
Erosion Control & Soil Stabilization
EcologicalDense root systems and vegetative cover bind soil particles, reduce surface runoff, and prevent erosion on slopes and disturbed areas. The plant biomass also increases organic matter over time. [source]
Pollinator & Livestock Forage
WildlifeLegume flowers attract bees, butterflies, and other pollinators. The nutritious foliage serves as high-protein pasture for sheep, goats, cattle, and wildlife; also provides early-season food when other forage is scarce. [source]
Clover Flowers for Tea & Garnish
CulinaryRed and white clover flowers are edible, with a slightly sweet flavor; commonly dried for herbal tea or used fresh as garnish on salads. Also used to make clover honey. [source]
Traditional Herbal Remedies
MedicinalRed clover (Trifolium pratense) has been used in traditional medicine for respiratory health, hormone balance, and skin conditions. Contains isoflavones and coumarin compounds valued in herbal practice. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
For ground cover use, no harvesting needed. For seed saving, allow flowers to mature, collect seed pods when dry and brown (usually late summer/fall), thresh to extract seeds, and dry thoroughly before storage. For culinary clover flowers, harvest in mid-bloom on dry mornings.
Fun Facts
- 🌱 A single clover plant can fix up to 7 pounds of nitrogen per year without any fertilizer application, rivaling the output of manufactured nitrogen in industrial agriculture.
- 🌱 Legume nodules are visible proof of symbiosis: if you dig up a legume and see pink or red bumps on the roots, those are nitrogen-fixing nodules actively working to enrich the soil.
- 🌱 Alfalfa, a popular legume, has roots that can penetrate 10-20 feet deep, making it extraordinarily drought-resistant and capable of bringing up nutrients from deep soil layers for use by nearby shallow-rooted plants.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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