Fertilising guide
How to fertilise Bicolor Barrenwort (Epimedium x versicolor)— schedule & NPK
Also called Bicolor Barrenwort, Bicolor Epimedium, Fairy Wings.
More about bicolor barrenwort
About Bicolor Barrenwort
Epimedium x versicolor · also called Bicolor Barrenwort, Bicolor Epimedium · flowering
A tough, semi-evergreen groundcover perennial for dry shade, producing clusters of bicoloured yellow and cream flowers on wiry stems in spring. Foliage emerges red-tinged, turns green in summer, and reddens again in autumn. Drought-tolerant once established, suppressing weeds under trees and shrubs. Hardy to USDA zone 4.
Growth habit: Clump-forming, spreading semi-evergreen groundcover perennial with wiry rhizomes
Watch for — Vine weevil: Larvae feed on roots, causing sudden wilting and collapse of individual shoots. Check for characteristic C-shaped grubs in the root zone. Treat with biological control (Steinernema kraussei nematodes) applied in late summer when soil is warm and moist.
What fertiliser bicolor barrenwort actually wants — and why
Bicolor Barrenwort 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 bicolor barrenwort: 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 bicolor barrenwort, 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 bicolor barrenwort:
Light annual top-dressing with leaf mould or well-rotted compost in early spring is sufficient. Avoid high-nutrient feeds — excess fertility promotes floppy growth in shade. No fertiliser needed in organic, leafy soils. 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 bicolor barrenwort 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 bicolor barrenwort
Half strength is the safe default for bicolor barrenwort — 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 bicolor barrenwort first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the bicolor barrenwort watering schedule.
Signs you are over-feeding bicolor barrenwort
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for bicolor barrenwort:
- 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 bicolor barrenwort
- 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 bicolor barrenwort care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of bicolor barrenwort 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 bicolor barrenwort
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 bicolor barrenwort — frequently asked questions
What fertiliser does bicolor barrenwort 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. Bicolor Barrenwort 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 bicolor barrenwort?
Light annual top-dressing with leaf mould or well-rotted compost in early spring is sufficient. Avoid high-nutrient feeds — excess fertility promotes floppy growth in shade. No fertiliser needed in organic, leafy soils. Light annual top-dressing with leaf mould or well-rotted compost in early spring is sufficient. Avoid high-nutrient feeds — excess fertility promotes floppy growth in shade. No fertiliser needed in organic, leafy soils. 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 bicolor barrenwort?
Half strength is the safe default for bicolor barrenwort — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding bicolor barrenwort 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 bicolor barrenwort 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 bicolor barrenwort?
Flush the pot of bicolor barrenwort 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
- Bicolor Barrenwort care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water bicolor barrenwort — 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 ravenna grass
- How to fertilise sugarcane plume grass
- How to fertilise variegated cord grass
- All 8452 fertilising guides in the Growli library