Annual vinca grows well in hot, sunny locations and blooms throughout the growing season. It can tolerate even relatively poor soils and dry conditions, but the National Garden Bureau recommends fertilizing once a month with water-soluble or granular fertilizer.

What fertilizer is best for vinca?

Fertilize the plants once a month with a 10-10-10 nitrogen, phosphorous, potassium water-soluble fertilizer. Mix 1 teaspoon of fertilizer with 1 gallon of water, or according to the instructions on the package. Apply the fertilizer in place of a watering.

How do you keep vincas blooming?

Keep potted vinca blooming well by fertilizing regularly with any general-purpose garden fertilizer. Be sure to follow the directions on the product packaging. If you have good or average soil, you typically don’t need to fertilize vinca growing in gardens and landscapes.