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Fertilising guide

How to fertilise Common Stork's Bill (Erodium cicutarium)— schedule & NPK

Also called Common Stork's Bill, Redstem Filaree, Redstem Stork's Bill, Pinweed.

More about common stork's bill

About Common Stork's Bill

Erodium cicutarium · also called Common Stork's Bill, Redstem Filaree · flowering

Erodium cicutarium is a native annual or biennial wildflower of temperate Eurasia, North Africa, and Macaronesia, naturalised widely across North America, and found in sandy grasslands, heathlands, roadsides, and disturbed ground across the UK. It forms a flat basal rosette of feathery, pinnate leaves from a tap root, bearing small bright pink flowers (occasionally with dark basal spots) from April to September, followed by the distinctive spirally twisted beak-like seed heads that give the genus its name. As a garden plant it is largely a self-seeding wildflower or weed, but it is occasionally grown deliberately in wildlife or meadow schemes to attract early pollinators. Erodium species are absent from the ASPCA Toxic Plants database, so toxicity status cannot be confirmed; it is classified as mildly-toxic as a precaution, though it is widely used as a forage plant and edible herb in some cultures.

Growth habit: Annual or biennial forming a flat basal rosette pressed close to the ground, with straggling ascending flowering stems.

What fertiliser common stork's bill actually wants — and why

Common Stork's Bill 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 stork's bill: 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 stork's bill, 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 stork's bill:

No feeding required or desirable; on fertile soils the plant grows leggy and weedy rather than forming the neat, compact rosettes seen on poor ground. 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 stork's bill 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 stork's bill

Half strength is the safe default for common stork's bill — 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 stork's bill first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the common stork's bill watering schedule.

Signs you are over-feeding common stork's bill

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

Signs you are under-feeding common stork's bill

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

Flushing and leaching the salts

Flush the pot of common stork's bill 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 stork's bill

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 stork's bill — frequently asked questions

What fertiliser does common stork's bill 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 Stork's Bill 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 stork's bill?

No feeding required or desirable; on fertile soils the plant grows leggy and weedy rather than forming the neat, compact rosettes seen on poor ground. No feeding required or desirable; on fertile soils the plant grows leggy and weedy rather than forming the neat, compact rosettes seen on poor ground. 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 stork's bill?

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

What does over-feeding common stork's bill 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 stork's bill 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 stork's bill?

Flush the pot of common stork's bill 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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