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Fertilising guide

How to fertilise Kousa Dogwood (Cornus kousa)— schedule & NPK

Also called Kousa Dogwood, Chinese Dogwood.

More about kousa dogwood

About Kousa Dogwood

Cornus kousa · also called Kousa Dogwood, Chinese Dogwood · flowering

Kousa dogwood is an East Asian small tree blooming about a month later than flowering dogwood, with pointed creamy-white bracts held above the foliage, followed by raspberry-like edible red fruit and crimson-purple autumn color. More disease- and sun-tolerant than Cornus florida, it suits mixed borders and woodland edges in moist, acidic, well-drained soil.

Growth habit: Small deciduous tree, vase-shaped when young and broadening to a rounded, horizontally tiered crown with attractive exfoliating mottled bark with age.

What fertiliser kousa dogwood actually wants — and why

Kousa Dogwood 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 kousa dogwood: 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 kousa dogwood, 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 kousa dogwood:

Apply a slow-release balanced or acidic fertiliser in early spring, or top-dress with compost annually. It is not a heavy feeder; moderate nitrogen supports steady growth without forcing weak, disease-prone shoots. 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 kousa dogwood 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 kousa dogwood

Half strength is the safe default for kousa dogwood — 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 kousa dogwood first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the kousa dogwood watering schedule.

Signs you are over-feeding kousa dogwood

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for kousa dogwood:

Signs you are under-feeding kousa dogwood

If the symptoms point at watering, light or roots rather than nutrition, the full kousa dogwood care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of kousa dogwood 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 kousa dogwood

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 kousa dogwood — frequently asked questions

What fertiliser does kousa dogwood 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. Kousa Dogwood 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 kousa dogwood?

Apply a slow-release balanced or acidic fertiliser in early spring, or top-dress with compost annually. It is not a heavy feeder; moderate nitrogen supports steady growth without forcing weak, disease-prone shoots. Apply a slow-release balanced or acidic fertiliser in early spring, or top-dress with compost annually. It is not a heavy feeder; moderate nitrogen supports steady growth without forcing weak, disease-prone shoots. 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 kousa dogwood?

Half strength is the safe default for kousa dogwood — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding kousa dogwood 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 kousa dogwood 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 kousa dogwood?

Flush the pot of kousa dogwood 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.

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