Fertilising guide
How to fertilise Pelargonium-Flowered Stork's Bill (Erodium pelargoniiflorum)— schedule & NPK
Also called Pelargonium-Flowered Stork's Bill, Pelargonium Stork's Bill.
More about pelargonium-flowered stork's bill
About Pelargonium-Flowered Stork's Bill
Erodium pelargoniiflorum · also called Pelargonium-Flowered Stork's Bill, Pelargonium Stork's Bill · flowering
Erodium pelargoniiflorum is a woody-based perennial native to Turkey, forming a low mound of long-stalked, apple-green, heart-shaped leaves. From early summer onwards it bears clusters of white flowers in which the two upper petals are conspicuously spotted with purple, giving the appearance of a small pelargonium bloom. It requires full sun and sharply-drained, preferably limey soil; it is notably drought-tolerant and long-lived when drainage is adequate. Not documented as toxic to cats or dogs; classified as mildly-toxic as ASPCA data for this precise species is absent.
Growth habit: Woody-based, low-mounding perennial with semi-evergreen foliage.
What fertiliser pelargonium-flowered stork's bill actually wants — and why
Pelargonium-Flowered 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 pelargonium-flowered 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 pelargonium-flowered 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 pelargonium-flowered stork's bill:
Apply a dilute, balanced fertiliser once in early spring; this species performs best in lean soils and heavy feeding is counterproductive. 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 pelargonium-flowered 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 pelargonium-flowered stork's bill
Half strength is the safe default for pelargonium-flowered 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 pelargonium-flowered 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 pelargonium-flowered stork's bill watering schedule.
Signs you are over-feeding pelargonium-flowered stork's bill
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for pelargonium-flowered stork's bill:
- 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.
Signs you are under-feeding pelargonium-flowered stork's bill
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full pelargonium-flowered stork's bill care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of pelargonium-flowered 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 pelargonium-flowered 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 pelargonium-flowered stork's bill — frequently asked questions
What fertiliser does pelargonium-flowered 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. Pelargonium-Flowered 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 pelargonium-flowered stork's bill?
Apply a dilute, balanced fertiliser once in early spring; this species performs best in lean soils and heavy feeding is counterproductive. Apply a dilute, balanced fertiliser once in early spring; this species performs best in lean soils and heavy feeding is counterproductive. 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 pelargonium-flowered stork's bill?
Half strength is the safe default for pelargonium-flowered 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 pelargonium-flowered 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 pelargonium-flowered 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 pelargonium-flowered stork's bill?
Flush the pot of pelargonium-flowered 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.
Keep reading
- Pelargonium-Flowered Stork's Bill care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water pelargonium-flowered stork's bill — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
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- All 10153 fertilising guides in the Growli library