Fertilising guide
How to fertilise King of Hearts Bleeding Heart (Dicentra 'King of Hearts')— schedule & NPK
Also called King of Hearts bleeding heart, dwarf rose bleeding heart.
More about king of hearts bleeding heart
About King of Hearts Bleeding Heart
Dicentra 'King of Hearts' · also called King of Hearts bleeding heart, dwarf rose bleeding heart · flowering
'King of Hearts' is a dwarf, compact bleeding heart hybrid with finely cut, glaucous blue-grey foliage and rich rose-pink heart-shaped flowers. It blooms heavily from late spring well into autumn, tolerates more sun and heat than older bleeding hearts, and stays low and tidy, making it ideal for the front of a shaded border or rock garden.
Growth habit: Low, compact mounding perennial with a slow-spreading rhizomatous habit, forming tidy cushions of foliage topped by arching flower sprays.
Watch for — Foliage scorch: Hot sun and dry soil burn the fine blue-grey leaves. Provide dappled shade and keep soil evenly moist.
What fertiliser king of hearts bleeding heart actually wants — and why
King of Hearts Bleeding Heart 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 king of hearts bleeding heart: 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 king of hearts bleeding heart, 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 king of hearts bleeding heart:
Feed with a balanced slow-release fertiliser or compost top-dressing in early spring, with a light midsummer feed to support its long flowering. Avoid heavy nitrogen, which produces lush foliage and fewer flowers. 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 king of hearts bleeding heart 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 king of hearts bleeding heart
Half strength is the safe default for king of hearts bleeding heart — 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 king of hearts bleeding heart first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the king of hearts bleeding heart watering schedule.
Signs you are over-feeding king of hearts bleeding heart
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for king of hearts bleeding heart:
- 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 king of hearts bleeding heart
- 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 king of hearts bleeding heart care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of king of hearts bleeding heart 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 king of hearts bleeding heart
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 king of hearts bleeding heart — frequently asked questions
What fertiliser does king of hearts bleeding heart 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. King of Hearts Bleeding Heart 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 king of hearts bleeding heart?
Feed with a balanced slow-release fertiliser or compost top-dressing in early spring, with a light midsummer feed to support its long flowering. Avoid heavy nitrogen, which produces lush foliage and fewer flowers. Feed with a balanced slow-release fertiliser or compost top-dressing in early spring, with a light midsummer feed to support its long flowering. Avoid heavy nitrogen, which produces lush foliage and fewer flowers. 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 king of hearts bleeding heart?
Half strength is the safe default for king of hearts bleeding heart — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding king of hearts bleeding heart 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 king of hearts bleeding heart 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 king of hearts bleeding heart?
Flush the pot of king of hearts bleeding heart 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
- King of Hearts Bleeding Heart care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water king of hearts bleeding heart — 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