Getting it to bloom

Why won't my Cylindric Blazing Star bloom? (and how to make it flower)

Also called Cylindric Blazing Star, Ontario Blazing Star, Cylindrical Gayfeather (Liatris cylindracea).

More about cylindric blazing star

About Cylindric Blazing Star

Liatris cylindracea · also called Cylindric Blazing Star, Ontario Blazing Star · flowering

Cylindric Blazing Star is a compact, drought-tolerant native perennial of rocky prairies and alvars in the Midwest and Great Lakes region. Its cylindrical, button-like purple flower heads open from top to bottom in late summer, attracting monarch butterflies and native bees. Ideal for dry, exposed rock gardens and pollinator plantings.

Plant type: flowering

Watch for — Sparse flowering: Plants in too much shade or overly fertile soil produce leaves but few flowers. Move to full sun and avoid feeding. Competition from aggressive grasses can also suppress flowering.

The reasons cylindric blazing star isn't blooming

Almost every non-blooming cylindric blazing star 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 cylindric blazing star 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 cylindric blazing star to flower

Maximise sun. Give cylindric blazing star 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 cylindric blazing star and get the feeding right with the cylindric blazing star 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

Cylindric Blazing Star 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 cylindric blazing star care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Cylindric Blazing Star blooming — frequently asked questions

Why won't my cylindric blazing star flower?

Cylindric Blazing Star 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 cylindric blazing star bloom?

Give cylindric blazing star 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 cylindric blazing star normally bloom?