Fertilising guide
How to fertilise Creeping New Zealand Cranesbill (Geranium sessiliflorum)— schedule & NPK
Also called Creeping New Zealand Cranesbill, Dwarf Cranesbill, Bronze Cranesbill.
More about creeping new zealand cranesbill
About Creeping New Zealand Cranesbill
Geranium sessiliflorum · also called Creeping New Zealand Cranesbill, Dwarf Cranesbill · flowering
Geranium sessiliflorum is a low, mat-forming perennial native to New Zealand and southern South America, grown primarily for its distinctive small, dark bronze-to-black-purple scalloped leaves rather than its tiny white flowers. The popular cultivar subsp. novae-zelandiae 'Nigricans' is the most widely grown form and requires full sun to develop and hold its striking leaf colour. It suits rock gardens, the front of sunny borders, and container edges. True Geranium species are non-toxic to cats and dogs per ASPCA guidance.
Growth habit: Low, mat-forming, semi-evergreen to evergreen perennial spreading by short stolons.
What fertiliser creeping new zealand cranesbill actually wants — and why
Creeping New Zealand Cranesbill 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 creeping new zealand cranesbill: 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 creeping new zealand cranesbill, 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 creeping new zealand cranesbill:
Apply a very light balanced fertiliser once in spring only; excessive feeding produces green, vigorous growth that masks the ornamental bronze foliage. 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 creeping new zealand cranesbill 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 creeping new zealand cranesbill
Half strength is the safe default for creeping new zealand cranesbill — 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 creeping new zealand cranesbill first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the creeping new zealand cranesbill watering schedule.
Signs you are over-feeding creeping new zealand cranesbill
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for creeping new zealand cranesbill:
- 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 creeping new zealand cranesbill
- 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 creeping new zealand cranesbill care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of creeping new zealand cranesbill 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 creeping new zealand cranesbill
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 creeping new zealand cranesbill — frequently asked questions
What fertiliser does creeping new zealand cranesbill 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. Creeping New Zealand Cranesbill 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 creeping new zealand cranesbill?
Apply a very light balanced fertiliser once in spring only; excessive feeding produces green, vigorous growth that masks the ornamental bronze foliage. Apply a very light balanced fertiliser once in spring only; excessive feeding produces green, vigorous growth that masks the ornamental bronze foliage. 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 creeping new zealand cranesbill?
Half strength is the safe default for creeping new zealand cranesbill — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding creeping new zealand cranesbill 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 creeping new zealand cranesbill 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 creeping new zealand cranesbill?
Flush the pot of creeping new zealand cranesbill 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
- Creeping New Zealand Cranesbill care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water creeping new zealand cranesbill — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise broad-leaved primrose
- How to fertilise sticky primrose
- How to fertilise evergreen candytuft
- All 10153 fertilising guides in the Growli library