Why Are My Vinca Flowers Wilting?

Save

Vinca, also known as catharanthus or Madagascar periwinkle, is a popular annual flower. Growing upwards to 10 to 16 inches tall, with dark green leaves and five-petal blossoms in pink, mauve or white, these flowers spread quickly and require little care. While vincas have few problems, occasionally they will suddenly wilt and die.

Symptoms and Causes

  • According to the Alabama Agricultural Experiment Station and Clemson University Extension, there are several diseases and fungus that can cause vincas to wilt, including phytophthora stem blight and root rot, pythium root rot, rhizoctonia stem and root rot, gray mold and the tomato spotted wilt virus. Symptoms of these diseases and fungus include dark colored lesions on the stems and branches, yellowing leaves with stunted growth, spots on the foliage, gray mold on the plant or black concentric rings on the leaves.

    Many of these diseases and fungus are prevalent in soil that has poor drainage or gardens that have been watered incorrectly.

Prevention and Treatment

  • Select healthy vinca to plant in the garden. Enrich the garden's soil with well-rotted manure or compost before planting to help increase the soil's moisture-retention. Do not plant the vinca deeply and space 8 to 12 inches apart to allow for air circulation. Vincas need about 1 inch of water each week; if rainfall is insufficient, avoid overhead irrigation systems and water deeply in the early morning to allow the plants time to dry before nightfall.

    Remove and destroy any affected plants. Treat the remaining plants with a fungicide; contact your local extension office to determine which fungicide is needed.

References

Promoted By Zergnet

Comments

Resources

You May Also Like

  • Vinca Minor Disease

    Vinca minor is a beautiful ground cover with green leaves and blue to violet colored flowers. Plants reach 6 inches tall and...

  • Vinca Leaves Are Turning Yellow

    Vinca (Vinca minor), also referred to as periwinkle and myrtle, is an evergreen groundcover that grows up to 6 inches tall. The...

  • How to Take Care of Vinca Flowers

    The plant commonly called vinca (Catharanthus roseus) grows as a short, upright bush, covered in small pink or magenta flowers. It grows...

  • When to Plant Vinca

    When it comes to planting vinca, the right timing makes the difference between a plant that will thrive and one that will...

  • How Often Should You Water Vinca Flowers?

    Vinca is actually three different types of plants, according to David J. Robson, Specialist for the University of Illinois Extension Service. Vinca...

  • Vinca Problem With Curling Leaves

    Vinca species are frequently used in landscaping as a ground cover or in hanging pots. these plants are typically prized for bright...

  • How Does Vinca Spread?

    Vinca is a common creeping ground cover. It is evergreen and provides a wealth of texture and even color with the variegated...

Related Searches

Check It Out

How to Make a Vertical Clay Pot Garden

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!