Fertilising guide
How to fertilise Eastern Cyclamen (Cyclamen coum)— schedule & NPK
Also called Eastern cyclamen, Eastern sowbread, Coum cyclamen.
More about eastern cyclamen
About Eastern Cyclamen
Cyclamen coum · also called Eastern cyclamen, Eastern sowbread · flowering
Cyclamen coum is a dwarf, tuberous perennial native to the eastern Mediterranean region from Bulgaria to Turkey, Lebanon, and the Caucasus, producing jewel-like magenta, pink, or white flowers with reflexed petals from December to March, making it one of the most valuable winter-flowering garden plants. The rounded, dark green to silver-patterned leaves are attractive from autumn through spring. It thrives in the dry shade under deciduous trees and shrubs, naturalising in leafy soil where it can be left undisturbed. All parts are highly toxic to cats and dogs due to saponins.
Growth habit: Tuberous, summer-dormant perennial; leaves appear in September–October, flowers from December–March, and the plant goes dormant by June.
What fertiliser eastern cyclamen actually wants — and why
Eastern Cyclamen 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 eastern cyclamen: 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 eastern cyclamen, 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 eastern cyclamen:
Apply a light topdressing of leaf mould or a low-nitrogen, high-potassium fertiliser in early autumn as leaves begin to appear; avoid feeding during active flowering or in summer as the tuber is dormant. 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 eastern cyclamen 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 eastern cyclamen
Half strength is the safe default for eastern cyclamen — 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 eastern cyclamen first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the eastern cyclamen watering schedule.
Signs you are over-feeding eastern cyclamen
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for eastern cyclamen:
- 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 eastern cyclamen
- 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 eastern cyclamen care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of eastern cyclamen 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 eastern cyclamen
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 eastern cyclamen — frequently asked questions
What fertiliser does eastern cyclamen 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. Eastern Cyclamen 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 eastern cyclamen?
Apply a light topdressing of leaf mould or a low-nitrogen, high-potassium fertiliser in early autumn as leaves begin to appear; avoid feeding during active flowering or in summer as the tuber is dormant. Apply a light topdressing of leaf mould or a low-nitrogen, high-potassium fertiliser in early autumn as leaves begin to appear; avoid feeding during active flowering or in summer as the tuber is dormant. 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 eastern cyclamen?
Half strength is the safe default for eastern cyclamen — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding eastern cyclamen 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 eastern cyclamen 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 eastern cyclamen?
Flush the pot of eastern cyclamen 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
- Eastern Cyclamen care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water eastern cyclamen — 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