Fertilising guide
How to fertilise Geum 'Prinses Juliana' (Geum 'Prinses Juliana')— schedule & NPK
Also called Prinses Juliana avens, Princess Juliana avens.
More about geum 'prinses juliana'
About Geum 'Prinses Juliana'
Geum 'Prinses Juliana' · also called Prinses Juliana avens, Princess Juliana avens · flowering
A long-flowering hybrid avens prized for warm orange to apricot semi-double blooms held on wiry stems above mounds of soft green foliage. Flowering from late spring through summer with deadheading, it brings hot colour to cottage and mixed borders. Hardy and easy, it reaches roughly 50 cm and is a magnet for early pollinators.
Growth habit: Clump-forming herbaceous perennial forming a low rosette of hairy leaves with branched, airy flowering stems rising well above the foliage.
What fertiliser geum 'prinses juliana' actually wants — and why
Geum 'Prinses Juliana' 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 geum 'prinses juliana': 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 geum 'prinses juliana', 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 geum 'prinses juliana':
Feed lightly in spring with a balanced fertiliser or top-dress with compost. Excess nitrogen encourages floppy growth, so favour moderate, balanced feeding for prolific flowering. 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 geum 'prinses juliana' 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 geum 'prinses juliana'
Half strength is the safe default for geum 'prinses juliana' — 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 geum 'prinses juliana' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the geum 'prinses juliana' watering schedule.
Signs you are over-feeding geum 'prinses juliana'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for geum 'prinses juliana':
- 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 geum 'prinses juliana'
- 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 geum 'prinses juliana' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of geum 'prinses juliana' 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 geum 'prinses juliana'
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 geum 'prinses juliana' — frequently asked questions
What fertiliser does geum 'prinses juliana' 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. Geum 'Prinses Juliana' 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 geum 'prinses juliana'?
Feed lightly in spring with a balanced fertiliser or top-dress with compost. Excess nitrogen encourages floppy growth, so favour moderate, balanced feeding for prolific flowering. Feed lightly in spring with a balanced fertiliser or top-dress with compost. Excess nitrogen encourages floppy growth, so favour moderate, balanced feeding for prolific flowering. 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 geum 'prinses juliana'?
Half strength is the safe default for geum 'prinses juliana' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding geum 'prinses juliana' 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 geum 'prinses juliana' 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 geum 'prinses juliana'?
Flush the pot of geum 'prinses juliana' 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
- Geum 'Prinses Juliana' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water geum 'prinses juliana' — 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 5561 fertilising guides in the Growli library