Getting it to bloom

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

Also called Purple Smoke false indigo (Baptisia 'Purple Smoke').

More about baptisia 'purple smoke'

About Baptisia 'Purple Smoke'

Baptisia 'Purple Smoke' · also called Purple Smoke false indigo · flowering

Baptisia 'Purple Smoke' is a popular hybrid false indigo prized for smoky violet-grey flowers held on charcoal-tinted stems above blue-green foliage in late spring. A Mt. Cuba Center selection, it is vigorous, long-lived, and drought-tough, forming a shrubby clump that returns reliably for decades and feeds early-season bumblebees.

Plant type: flowering

Watch for — Slow first years: Invests in root growth early; full size and peak flowering arrive only after two to three seasons.

The reasons baptisia 'purple smoke' isn't blooming

Almost every non-blooming baptisia 'purple smoke' 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 baptisia 'purple smoke' 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 baptisia 'purple smoke' to flower

Maximise sun. Give baptisia 'purple smoke' 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 baptisia 'purple smoke' and get the feeding right with the baptisia 'purple smoke' 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

Baptisia 'Purple Smoke' 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 baptisia 'purple smoke' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Baptisia 'Purple Smoke' blooming — frequently asked questions

Why won't my baptisia 'purple smoke' flower?

Baptisia 'Purple Smoke' 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 baptisia 'purple smoke' bloom?

Give baptisia 'purple smoke' 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 baptisia 'purple smoke' normally bloom?