Subterranean clover (Trifolium subterraneum)

Care, watering, light and tips for Subterranean clover on Floravia.

Subterranean clover

Quick facts

About Subterranean clover

Subterranean Clover (Trifolium subterraneum) is a low-growing annual legume, valued for its nitrogen-fixing capabilities and its use as a forage crop and groundcover. Its small trifoliate leaves and creeping growth habit make it ideal for lawns, pastures, or as a green manure in vegetable gardens. It is particularly useful in poor soils where other plants struggle.

Native range

Mediterranean region: Southern Europe, North Africa, and the Middle East.

Care tips

It prefers full sun to partial shade and adapts to a wide range of soils, even poor ones, as long as they have good drainage. Watering is crucial during establishment, keeping it moist but not waterlogged; once established, it is quite drought-tolerant. It does not require additional fertilization due to its nitrogen-fixing ability; in fact, excess nitrogen can inhibit this function. A common mistake is sowing it in overly compacted soils, which hinders root development and the subterranean 'sowing' of its seeds.

How to save a dying Subterranean clover

Warning signs
Yellowish or reddish leaves, stunted growth, absence of new seedlings.
First aid
Improve soil drainage, water moderately (avoid waterlogging), consider adding phosphorus if soil is poor.
What kills it
Excessive moisture or compacted soils hindering root and nodule development.
Can it be saved?
Yes, if you act quickly to improve soil and watering before the root system collapses.

Open in Floravia — reminders and AI advice