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Last edited on February 03, 2024. View history

Clover

Also known as trefoil (en)

How to sow clover: Direct seed using a broadcast method

Sun requirement for clover: Plant in Full Sun

Clover, or Trefoil, is a genus of 300 plants in the legume, or Fabaceae family. Clovers are small annual, biennial, or short-lived perennial herbaceous plants. Leaves are usually trifoliate and rarely quatrefoiled. Flowers are dense spikes of small purple, red, yellow, or white flowers. Plants can be upright or low-growing. Clover is frequently grown as animal feed or a cover crop. It is a popular cover crop because it fixes nitrogen, breaks up hard soil with its deep tap root, provides green manure, and prevents soil erosion. Common cover crop species include Red Clover, Crimson Clover, Sweet Clover, and White Clover. More growing information is available in individual species entries.

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Clover facts

Lifespan

Perennial living more than two years
Optimal temperature 14–22 °C
Absolute temperature 4–26 °C
FAO EcoCrop
Optimal rainfall 700–1200 mm/year
Absolute rainfall 300–2100 mm/year
FAO EcoCrop
Optimal soil pH 5.5–7
Absolute soil pH 4.5–8.2
FAO EcoCrop

Crop cycle

90–240 days
FAO EcoCrop

Max altitude

6000 m
FAO EcoCrop

Optimal light

very bright to cloudy skies
FAO EcoCrop
What are growing degree days?

A plant grows with warmth, not with days. A growing degree day is one day's worth of useful warmth: how many degrees the day's average temperature is above the lowest temperature the crop grows at. Add them up from planting and you know how far along the crop is, whatever the calendar says.

Say that lowest temperature is 10°C. A day averaging 17°C gives 7 growing degree days. A day averaging 8°C gives none, as it is too cold for the crop to grow. That is why the same lettuce takes about 50 days in a summer and 90 in an autumn: it needs the same total warmth either way.

For clover, the FAO EcoCrop database gives a lowest growing temperature of 4°C and a shortest growing cycle of 90 days at its best temperature, about 1260 growing degree days to a first harvest.

Where you've told us where your garden is, we use this and the weather there to predict when your clover will be ready to harvest. We don't use it for how long a plant lives or when it finishes: we go by what members have logged for that.

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Time to harvest

If sown now, expect a first harvest in about 90 to 240 days.

From the growing cycle in the FAO EcoCrop database, which is the same wherever it is grown.

Ecological requirements

Data from the FAO EcoCrop database for Trifolium repens L.

Family / Taxonomy Magnoliopsida
Rosidae
Fabales
Leguminosae
Killing temperature growth: 0 °C, rest: -2 °C
Life form herb
Life span perennial
Habit prostrate/procumbent/semi-erect
Optimal soil depth shallow (20-50 cm)
Optimal soil texture heavy, medium
Optimal soil fertility high
Optimal soil drainage well (dry spells)
Optimal soil salinity low (<4 dS/m)
Photoperiod long day (>14 hours)

Learn more about clovers

Resources outside Growstuff.