How to Grow and Care for Bigleaf Periwinkle

Bigleaf periwinkle may be mildly toxic to humans and animals.

It prefers a well-drained, slightly acidic soil to flourish.

Water

If growing in the shade, your bigleaf periwinkle should not require extra watering.

But if there’s a long period of drought supplemental watering may be necessary.

Bigleaf periwinkle is not as cold-hardy as ordinary periwinkle.

It prefers a temperate climate.

All types of bigleaf periwinkle have blue flowers.

Start seeds in the spring before the last frost.

It’s best planted on its own without companion plants.

Place the pot in dappled sunlight and water when the top 1 to 2 inches of soil is dry.

Not much can stop this plant from growing.

Pests may includeaphids.Root rot,leaf spot,or blight can also affect a swath of bigleaf periwinkle.

The flowers may have a very faint, sweet fragrance.

Bigleaf periwinkle in pots can use light fertilizer every couple of weeks to keep the plant blooming.

Water in the mornings, as well, so the air can dry excess moisture.

For potted bigleaf periwinkle showing these signs, do not water as frequently.

Although bigleaf periwinkle is not cold-hardy, it will reappear in colder regions because it can self-sow its seed.

Though the plant seems to prefer dappled sunlight, it will usually tolerate full sun quite well.

Vinca major-greater periwinkle.Native Plant Trust.

Vinca Major.Arizona State University.

Big periwinkle.Invasive Plant Atlas.

Vinca major.Missouri Botanical Garden.