Getting it to bloom

Why won't my Smokebush 'Royal Purple' bloom? (and how to make it flower)

Also called Smoke Tree, Smokebush (Cotinus coggygria 'Royal Purple').

More about smokebush 'royal purple'

About Smokebush 'Royal Purple'

Cotinus coggygria 'Royal Purple' · also called Smoke Tree, Smokebush · flowering

'Royal Purple' is a deciduous smokebush grown for its rich deep-purple foliage that blazes scarlet in autumn, plus airy smoke-like plumes of fading flower stalks in summer. A tough, sun-loving shrub for free-draining soil, it tolerates poor ground and drought, and colours best in full sun with restrained feeding.

Plant type: flowering

The reasons smokebush 'royal purple' isn't blooming

Almost every non-blooming smokebush 'royal purple' traces back to one of these, roughly in order of how common they are:

Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.
Too much nitrogen feed, driving lush foliage at the expense of flowers (very common with general or lawn feeds).
The plant has not been deadheaded, so it stops flowering once it sets seed.
Irregular watering — drought or waterlogging at the budding stage makes buds abort.
It is still too young or was checked by a transplant and is rebuilding before flowering.

Feeding smokebush 'royal purple' a high-nitrogen general feed and growing it in too little sun — you get a big leafy plant and almost no flowers.

The fix — how to get smokebush 'royal purple' to flower

Maximise sun. Give smokebush 'royal purple' the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers.
Switch the feed. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.
Deadhead regularly. Remove spent flowers often to keep it producing more rather than stopping to set seed.
Water consistently. Keep moisture even through budding and flowering — drought-then-flood swings make buds drop.

Light and feeding do most of the heavy lifting here. Dial in the spot with the light guide for smokebush 'royal purple' and get the feeding right with the smokebush 'royal purple' fertilising schedule — the wrong feed (too much nitrogen) is one of the most common silent reasons a healthy plant makes leaves instead of flowers.

Bloom season and what to expect

Smokebush 'Royal Purple' flowers across its growing season (mostly summer) and, kept fed and deadheaded, can bloom for many weeks or right up to frost.

Post-bloom care so it flowers again

Deadhead, keep feeding lightly, and many will rebloom; collect seed from the best plants at the end of the season if you want to grow them again.

For everything else this plant needs day to day, see the full smokebush 'royal purple' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Smokebush 'Royal Purple' blooming — frequently asked questions

Why won't my smokebush 'royal purple' flower?

Smokebush 'Royal Purple' blooms on the season's growth given enough sun, warmth and the right feed — there is no cold or photoperiod trick, just good growing conditions and a bloom-leaning feed. The most common reason it is not happening: Too little sun — most of these need full sun (or very bright light) to flower well; shade gives leaves, not blooms.

How do I make smokebush 'royal purple' bloom?

Give smokebush 'royal purple' the sunniest spot you have — for most bedding and fruiting plants, more direct light directly means more flowers. Move off high-nitrogen feeds and use a higher-potassium "bloom" or tomato-type feed as it comes into flower.

When does smokebush 'royal purple' normally bloom?