Getting it to bloom

Why won't my Weigela 'Eva Rathke' bloom? (and how to make it flower)

Also called Eva Rathke Weigela, Red Weigela (Weigela 'Eva Rathke').

More about weigela 'eva rathke'

About Weigela 'Eva Rathke'

Weigela 'Eva Rathke' · also called Eva Rathke Weigela, Red Weigela · flowering

A classic Victorian-era deciduous shrub bearing rich crimson-red trumpet flowers from late spring through summer against mid-green foliage. One of the oldest named Weigela cultivars, still valued for its deep flower colour and reliable repeat bloom. Low-maintenance and frost-hardy. Mildly-toxic status applies as a precaution.

Plant type: flowering

Watch for — Reduced flowering over time: Old, congested stems produce fewer flowers. Remove one-third of the oldest stems at ground level every few years to rejuvenate the plant.

The reasons weigela 'eva rathke' isn't blooming

Almost every non-blooming weigela 'eva rathke' 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 weigela 'eva rathke' 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 weigela 'eva rathke' to flower

Maximise sun. Give weigela 'eva rathke' 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 weigela 'eva rathke' and get the feeding right with the weigela 'eva rathke' 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

Weigela 'Eva Rathke' 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 weigela 'eva rathke' care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Weigela 'Eva Rathke' blooming — frequently asked questions

Why won't my weigela 'eva rathke' flower?

Weigela 'Eva Rathke' 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 weigela 'eva rathke' bloom?

Give weigela 'eva rathke' 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 weigela 'eva rathke' normally bloom?