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Fertilising guide

How to fertilise Fingertips (Dudleya edulis)— schedule & NPK

Also called Fingertips, Mission Lettuce, Ladies' Fingers.

More about fingertips

About Fingertips

Dudleya edulis · also called Fingertips, Mission Lettuce · houseplant

Dudleya edulis is a Californian native succulent named for its narrow, cylindrical, finger-like leaves arranged in a loose rosette. It produces white to pale pink flowers on tall stalks in late spring. Winter-growing and summer-dormant, it suits cool bright windowsills or Mediterranean-climate rock gardens.

Growth habit: Rosette-forming succulent with narrow terete leaves; slow to moderate growth; may form clumps over time

What fertiliser fingertips actually wants — and why

Fingertips 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 fingertips: 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 fingertips, 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 fingertips:

Apply a single dose of dilute, low-nitrogen liquid fertiliser at the onset of autumn growth. More frequent feeding is unnecessary and promotes soft, rot-prone growth. 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 fingertips 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 fingertips

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

Signs you are over-feeding fingertips

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

Signs you are under-feeding fingertips

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

Flushing and leaching the salts

Flush the pot of fingertips 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 fingertips

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 fingertips — frequently asked questions

What fertiliser does fingertips 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. Fingertips 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 fingertips?

Apply a single dose of dilute, low-nitrogen liquid fertiliser at the onset of autumn growth. More frequent feeding is unnecessary and promotes soft, rot-prone growth. Apply a single dose of dilute, low-nitrogen liquid fertiliser at the onset of autumn growth. More frequent feeding is unnecessary and promotes soft, rot-prone growth. 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 fingertips?

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

What does over-feeding fingertips 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 fingertips 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 fingertips?

Flush the pot of fingertips 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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