Getting it to bloom

Why won't my Ceanothus thyrsiflorus 'Skylark' bloom? (and how to make it flower)

Also called Skylark blueblossom, Skylark ceanothus (Ceanothus thyrsiflorus 'Skylark').

More about ceanothus thyrsiflorus 'skylark'

About Ceanothus thyrsiflorus 'Skylark'

Ceanothus thyrsiflorus 'Skylark' · also called Skylark blueblossom, Skylark ceanothus · flowering

Ceanothus thyrsiflorus 'Skylark' is a compact, comparatively hardy blueblossom selection bearing dense panicles of rich deep-blue flowers in late spring to early summer over glossy dark green evergreen leaves. More tolerant of summer water and cold than many California lilacs, it suits smaller gardens in full sun and sharp drainage, and is a strong bee plant.

Plant type: flowering

Watch for — Poor recovery from hard pruning: Will not reshoot from old bare wood. Prune only lightly after flowering, trimming the current year's growth.

The reasons ceanothus thyrsiflorus 'skylark' isn't blooming

Almost every non-blooming ceanothus thyrsiflorus 'skylark' 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 ceanothus thyrsiflorus 'skylark' 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 ceanothus thyrsiflorus 'skylark' to flower

Maximise sun. Give ceanothus thyrsiflorus 'skylark' 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 ceanothus thyrsiflorus 'skylark' and get the feeding right with the ceanothus thyrsiflorus 'skylark' 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

Ceanothus thyrsiflorus 'Skylark' 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 ceanothus thyrsiflorus 'skylark' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Ceanothus thyrsiflorus 'Skylark' blooming — frequently asked questions

Why won't my ceanothus thyrsiflorus 'skylark' flower?

Ceanothus thyrsiflorus 'Skylark' 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 ceanothus thyrsiflorus 'skylark' bloom?

Give ceanothus thyrsiflorus 'skylark' 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 ceanothus thyrsiflorus 'skylark' normally bloom?