How to Grow Persian Clover
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Persian Clover
Trifolium resupinatum
herbPersian clover is a low-growing annual legume native to the Mediterranean region, characterized by distinctive inverted (resupinate) pink to purple flower heads and small trifoliate leaves. It is commonly used as a cover crop and forage plant that fixes nitrogen in the soil while providing nutritious feed for livestock. The plant is particularly valued in sustainable agriculture for its ability to improve soil fertility and erosion control.
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Example Persian Clover timeline · Pittsburgh, PA (Zone 6b)
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Plant Persian Clover
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 Persian Clover
Around Jul 16≈ 90 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Persian Clover dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 6-9, prefers mild winter climates
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Get my Persian Clover timeline →Growth Stages
Germination
1-2 weeksSeedlings emerge with characteristic cotyledons and first trifoliate leaves appear within 7-10 days
Keep soil consistently moist but not waterlogged. Provide full sunlight. Thin seedlings if needed.
Vegetative Growth
4-6 weeksPlant develops multiple stems and compound leaves; low-growing mat forms. Nitrogen fixation begins through root nodulation.
Minimal fertilizer needed due to nitrogen-fixing ability. Remove competing weeds. Ensure adequate spacing for air circulation.
Flowering
4-8 weeksPink to purple flower heads emerge, characteristically inverted (resupinate) with flowers pointing downward. Attracts pollinators.
Maintain consistent moisture during flowering. Avoid high nitrogen fertilizers that promote excessive vegetative growth. Bees and other pollinators will visit.
Seed Development & Maturation
3-4 weeksFlowers fade, seed pods develop within the calyx. Plant begins to senesce, foliage may yellow.
Reduce watering if plant is to be left for seed production. Allow seeds to fully mature on plant before harvest.
Senescence & Incorporation
VariablePlant reaches full maturity, dries down. As a cover crop, can be tilled back into soil to improve organic matter and nitrogen content.
Clip or mow if using as forage before full senescence. Allow plant to dry completely if harvesting seeds. Incorporate into soil or leave as mulch.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Monitor for larvae damage on leaves; use insecticidal soap if heavy infestation; encourage natural predators
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Rotate crops; use nematode-resistant varieties; avoid waterlogged soils; solarize soil if severe
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Remove affected plants; encourage parasitic wasps; avoid overwatering which promotes larval survival
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Spray with water jet to dislodge; use insecticidal soap; introduce ladybugs and lacewings
Uses
Livestock Forage
CulinaryPersian clover is excellent as a protein-rich forage and hay crop for grazing animals and supplemental feed. It provides high palatability and digestibility for cattle, sheep, and goats. [source]
Nitrogen-Fixing Cover Crop
HouseholdAs a cool-season legume, Persian clover forms symbiotic relationships with Rhizobium bacteria in its root nodules, fixing atmospheric nitrogen and significantly improving soil fertility when tilled back in. [source]
Pollinator Habitat
WildlifeThe abundant pink-purple flowers attract and support bees, butterflies, and other beneficial insects, making it valuable for integrated pest management and pollinator conservation. [source]
Erosion Control & Soil Stabilization
HouseholdThe low-growing spreading habit and root system effectively prevent soil erosion on sloping land and disturbed areas while simultaneously building soil structure and organic matter. [source]
Traditional Herbal Use
MedicinalIn Mediterranean and Middle Eastern folk medicine, clover species including Persian clover have been traditionally used for respiratory support and anti-inflammatory properties, though scientific evidence is limited. [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 forage: Cut at early bloom stage (when 25-50% of flowers are open) for maximum nutritive value and digestibility, typically 90-120 days after planting. For seed: Allow plants to mature fully and dry on plant before harvesting; collect seed heads when stems are brittle and brown. Cut and dry indoors for 1-2 weeks before threshing. For cover crop incorporation: Till under at any growth stage, ideally before or at early bloom to maximize nitrogen fixation benefits.
Fun Facts
- 🌱 The name 'resupinatum' refers to the inverted or 'resupinate' flower head, which points downward—a unique characteristic that distinguishes this clover species from many others.
- 🌱 Persian clover can fix 100-150 kg of nitrogen per hectare annually through its symbiotic relationship with Rhizobium bacteria, making it an economical alternative to synthetic nitrogen fertilizers in sustainable farming systems.
- 🌱 This species is native to the Mediterranean basin and Middle East but has become naturalized in California and other Mediterranean-climate regions, where it thrives in annual grasslands and rangelands.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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