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Fertilising guide

How to fertilise Common Bird's-foot Trefoil (Lotus corniculatus)— schedule & NPK

Also called Common Bird's-foot Trefoil, Bird's-foot Trefoil, Eggs and Bacon.

More about common bird's-foot trefoil

About Common Bird's-foot Trefoil

Lotus corniculatus · also called Common Bird's-foot Trefoil, Bird's-foot Trefoil · flowering

Lotus corniculatus is a low-growing perennial wildflower native to grasslands across Europe, Asia, and North Africa, widely naturalised in North America. It thrives in full sun on poor, well-drained, low-nitrogen soils — excessive fertility encourages leafy growth at the expense of flowers. As a legume it fixes atmospheric nitrogen through root nodal bacteria, so avoid enriching the soil. The plant contains cyanogenic glycosides (primarily lotaustralin) and is considered mildly toxic to pets if ingested in quantity.

Growth habit: Prostrate to ascending, mat-forming perennial with slender branching stems reaching 10–40 cm.

What fertiliser common bird's-foot trefoil actually wants — and why

Common Bird's-foot Trefoil is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.

For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for common bird's-foot trefoil: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.

How often to feed common bird's-foot trefoil, and which months

Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For common bird's-foot trefoil:

Do not feed — supplementary fertiliser suppresses flowering and undermines the nitrogen-fixing symbiosis that benefits the plant. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

The dormant-season rule matters more than the exact interval: skip feeding entirely when common bird's-foot trefoil is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.

What strength to mix for common bird's-foot trefoil

Half strength is the safe default for common bird's-foot trefoil — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

Feeding always goes onto already-damp soil, never dry roots — water common bird's-foot trefoil first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the common bird's-foot trefoil watering schedule.

Signs you are over-feeding common bird's-foot trefoil

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for common bird's-foot trefoil:

Signs you are under-feeding common bird's-foot trefoil

If the symptoms point at watering, light or roots rather than nutrition, the full common bird's-foot trefoil care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of common bird's-foot trefoil with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

Organic vs synthetic feeds for common bird's-foot trefoil

Organic options

A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.

Synthetic / liquid feeds

A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.

Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.

Fertilising common bird's-foot trefoil — frequently asked questions

What fertiliser does common bird's-foot trefoil need?

A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Common Bird's-foot Trefoil is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.

How often should I feed common bird's-foot trefoil?

Do not feed — supplementary fertiliser suppresses flowering and undermines the nitrogen-fixing symbiosis that benefits the plant. Do not feed — supplementary fertiliser suppresses flowering and undermines the nitrogen-fixing symbiosis that benefits the plant. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.

What strength of feed for common bird's-foot trefoil?

Half strength is the safe default for common bird's-foot trefoil — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding common bird's-foot trefoil look like?

Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding common bird's-foot trefoil year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.

Should I flush the soil of common bird's-foot trefoil?

Flush the pot of common bird's-foot trefoil with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.

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