![]() Keep the soil surface clean and weed free to prevent the growth of disease.Water the soil and not the plant to prevent mildew diseases.Removing old flowers is not necessary and will not promote new growth.If plants are getting leggy it is usually a sign they are not getting enough sunlight.Other tips for abundant blooms and healthy plants: Vincas are susceptible to mildew diseases but it is rarely bad enough to require treatment. Pests and diseases are usually not an issue with this plant. Only water when the top 1-2 inches of soil are dry. Do not water late in the day so that the soil has a chance to dry out before night. Vincas need regular watering but do not overwater as they are drought tolerant. Characteristics : Attracts Bees, Attracts Butterflies, Heat Tolerant, Low Maintenance. Hardiness Degree : 45F (7.2C) Blooming Season : Late Spring, Summer, Late Summer. If you do fertilize, be sure to use it at half the recommended rate. Common Name : Madagascar Periwinkle, F1 Upright Vinca. In fact, fertilizing can reduce the number of flowers produced. Vincas do not require fertilizing throughout the season as they are very light feeders. Vinca prefer soils with a pH of 5.5-6 but will tolerate high pH soils.Ī general-purpose fertilizer with equal amounts of nitrogen, phosphorus and potassium should be incorporated into the soil at time of planting.To improve drainage, compost or sand can be incorporated into heavy soils. Soil or potting mix must be well drained.Location must have full sun for 8+ hours a day.These are the requirements for choosing a site for vincas: Plants should be spaced about 12 inches apart. They can be planted outdoors once soil temperatures are above 60 degrees F. ![]() ![]() Vincas are versatile and perform equally well in garden beds, containers and hanging baskets. Vinca Mega Bloom Orchid Halo, a 2018 Top Ten Performing Annual in the U of M WCROC annual flower trial The following annual vinca cultivars were rated good to excellent in our recent trials: Located at the West Central Research and Outreach Center in Morris, Minn., the Horticulture Display Garden serves as an All-America Selections (AAS) display garden and trail grounds and provides the public an opportunity to view the newest superior performers. Good performersĪnnual vincas are evaluated as part of the U of M flower trials and research. Vincas are sensitive plants as seedlings and do not like it wet, but can tolerate a wide range of conditions once established. Most cultivars grow upright and can reach heights up to 24 inches tall, but some cultivars have more of a trailing habit which makes them great for hanging baskets. In addition to having large, brightly colored flowers, vincas also have attractive foliage and are eye-catching even when not in bloom. ![]() Vinca Valiant™ Orchid, a 2020 Top Ten Performing Annual in the U of M WCROC annual flower trialĪnnual vincas are also known as periwinkles and are native to semi-arid regions of Africa, which is why they do well in warmer and drier settings. ![]()
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