Getting it to bloom

Why won't my Wulfen's Alyssum bloom? (and how to make it flower)

Also called Wulfen's Alyssum, Wulfenia Alyssum (Alyssum wulfenianum).

More about wulfen's alyssum

About Wulfen's Alyssum

Alyssum wulfenianum · also called Wulfen's Alyssum, Wulfenia Alyssum · flowering

Wulfen's Alyssum is a rare, tufted alpine perennial from the eastern Alps and Dinaric mountains, forming a tight silver-grey cushion. It bears dense clusters of golden-yellow flowers in late spring, releasing a light honey fragrance. A choice plant for specialist rock gardens, alpine troughs, and scree beds, it demands exceptional drainage and full sun.

Plant type: flowering

Watch for — Failure to flower: Usually due to insufficient sunlight or excessive feeding. Ensure full sun exposure and withhold all but the lightest spring feed. Young plants may take 1–2 years to reach flowering maturity.

The reasons wulfen's alyssum isn't blooming

Almost every non-blooming wulfen's alyssum 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 wulfen's alyssum 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 wulfen's alyssum to flower

Maximise sun. Give wulfen's alyssum 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 wulfen's alyssum and get the feeding right with the wulfen's alyssum 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

Wulfen's Alyssum 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 wulfen's alyssum care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

Wulfen's Alyssum blooming — frequently asked questions

Why won't my wulfen's alyssum flower?

Wulfen's Alyssum 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 wulfen's alyssum bloom?

Give wulfen's alyssum 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 wulfen's alyssum normally bloom?