Getting it to bloom

Why won't my Clematis armandii bloom? (and how to make it flower)

Also called Armand clematis, evergreen clematis (Clematis armandii).

More about clematis armandii

About Clematis armandii

Clematis armandii · also called Armand clematis, evergreen clematis · flowering

Clematis armandii is a vigorous evergreen climber prized for glossy leathery leaves and fragrant white spring blooms. A Pruning Group 1 species, it flowers on old wood, so prune only lightly right after flowering. Plant the roots in cool shade with the top in sun, on a sturdy support, and shelter it from harsh cold winds.

Plant type: flowering

Watch for — Wrong-time pruning kills the display: As a Group 1 clematis it flowers on the previous year's growth. Hard pruning in winter or spring removes the flower buds, so only tidy lightly straight after flowering.

The reasons clematis armandii isn't blooming

Almost every non-blooming clematis armandii 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 clematis armandii 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 clematis armandii to flower

Maximise sun. Give clematis armandii 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 clematis armandii and get the feeding right with the clematis armandii 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

Clematis armandii 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 clematis armandii care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Clematis armandii blooming — frequently asked questions

Why won't my clematis armandii flower?

Clematis armandii 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 clematis armandii bloom?

Give clematis armandii 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 clematis armandii normally bloom?