Growli
Let's go

Fertilising guide

How to fertilise Cotinus coggygria 'Grace' (Cotinus coggygria 'Grace')— schedule & NPK

Also called Grace smoke bush, Grace smoke tree.

More about cotinus coggygria 'grace'

About Cotinus coggygria 'Grace'

Cotinus coggygria 'Grace' · also called Grace smoke bush, Grace smoke tree · flowering

'Grace' is a large, vigorous smoke bush prized for its translucent wine-red foliage that flames to scarlet and orange in autumn. Huge, airy plumes of tiny pinkish flowers create the signature 'smoke' in summer. Grow it in full sun on poor, free-draining soil; on lean ground the leaf colour is at its richest and the habit stays dense.

Growth habit: Large, rounded, multi-stemmed deciduous shrub or small tree with an open, spreading crown; can be coppiced hard for larger leaves and a shrubbier shape.

Watch for — Green, washed-out leaves: Too much shade or over-rich soil. Move to full sun and stop feeding; lean, sunny conditions restore the deep wine colour.

What fertiliser cotinus coggygria 'grace' actually wants — and why

Cotinus coggygria 'Grace' 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 cotinus coggygria 'grace': 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 cotinus coggygria 'grace', 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 cotinus coggygria 'grace':

Best on a lean diet — avoid feeding. Rich soils and nitrogen feeds dilute the leaf colour and produce soft, floppy growth; a thin spring mulch is all it needs. 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 cotinus coggygria 'grace' 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 cotinus coggygria 'grace'

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

Signs you are over-feeding cotinus coggygria 'grace'

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for cotinus coggygria 'grace':

Signs you are under-feeding cotinus coggygria 'grace'

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

Flushing and leaching the salts

Flush the pot of cotinus coggygria 'grace' 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 cotinus coggygria 'grace'

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 cotinus coggygria 'grace' — frequently asked questions

What fertiliser does cotinus coggygria 'grace' 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. Cotinus coggygria 'Grace' 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 cotinus coggygria 'grace'?

Best on a lean diet — avoid feeding. Rich soils and nitrogen feeds dilute the leaf colour and produce soft, floppy growth; a thin spring mulch is all it needs. Best on a lean diet — avoid feeding. Rich soils and nitrogen feeds dilute the leaf colour and produce soft, floppy growth; a thin spring mulch is all it needs. 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 cotinus coggygria 'grace'?

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

What does over-feeding cotinus coggygria 'grace' 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 cotinus coggygria 'grace' 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 cotinus coggygria 'grace'?

Flush the pot of cotinus coggygria 'grace' 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