Getting it to bloom

Why won't my old-fashioned weigela bloom? (and how to make it flower)

Also called old-fashioned weigela, weigela, cardinal shrub (Weigela florida).

More about old-fashioned weigela

About old-fashioned weigela

Weigela florida · also called old-fashioned weigela, weigela · flowering

Old-fashioned weigela is a robust, arching deciduous shrub that erupts in masses of funnel-shaped, rose-pink to deep-red flowers in late spring and early summer, attracting hummingbirds and pollinators. Highly adaptable, it thrives in most soils and full sun, requires only occasional post-flowering pruning, and offers numerous colourful cultivars for borders and mixed plantings.

Plant type: flowering

Watch for — Failure to rebloom: Weigela blooms primarily on previous year's wood. Pruning in autumn or early spring removes flower buds. Prune only right after the main flowering flush (late spring/early summer) to allow new wood to develop for next season's flowers.

The reasons old-fashioned weigela isn't blooming

Almost every non-blooming old-fashioned weigela 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 old-fashioned weigela 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 old-fashioned weigela to flower

Maximise sun. Give old-fashioned weigela 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 old-fashioned weigela and get the feeding right with the old-fashioned weigela 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

old-fashioned weigela 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 old-fashioned weigela care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

old-fashioned weigela blooming — frequently asked questions

Why won't my old-fashioned weigela flower?

old-fashioned weigela 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 old-fashioned weigela bloom?

Give old-fashioned weigela 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 old-fashioned weigela normally bloom?