Getting it to bloom

Why won't my White Periwinkle bloom? (and how to make it flower)

Also called White Periwinkle, White Lesser Periwinkle, Alba Periwinkle (Vinca minor 'Alba').

More about white periwinkle

About White Periwinkle

Vinca minor 'Alba' · also called White Periwinkle, White Lesser Periwinkle · flowering

White Periwinkle is the pure white-flowered cultivar of Vinca minor, offering the same vigorous, trailing, shade-tolerant groundcover habit with clean white pinwheel blooms from spring through early summer. The white flowers provide striking contrast against dark glossy foliage and brighten shaded corners of the garden. Care requirements are identical to the species.

Plant type: flowering

Watch for — Petal browning in wet weather: White flowers are more visibly affected by rain splash and botrytis than blue-flowered types. Brown-edged petals in cool, wet springs are common but cosmetic. Ensure good airflow over the canopy and remove spent flowers to reduce botrytis risk.

The reasons white periwinkle isn't blooming

Almost every non-blooming white periwinkle 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 white periwinkle 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 white periwinkle to flower

Maximise sun. Give white periwinkle 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 white periwinkle and get the feeding right with the white periwinkle 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

White Periwinkle 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 white periwinkle care brief and its watering schedule — a stressed, badly watered plant rarely has the energy to flower at all.

White Periwinkle blooming — frequently asked questions

Why won't my white periwinkle flower?

White Periwinkle 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 white periwinkle bloom?

Give white periwinkle 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 white periwinkle normally bloom?