Vinca minor, commonly known as periwinkle, is a versatile ground cover that is widely used for its aesthetic appeal and practical benefits. Its evergreen foliage, trailing vines, and ability to thrive in various conditions make it a popular choice for gardeners. To ensure successful growth and coverage, proper spacing is crucial when planting Vinca minor.
Key Facts
- Plant spacing for bare root Vinca minor is typically recommended to be 12 inches apart.
- Vinca minor is an evergreen perennial that grows 3-6 inches tall with trailing vines up to 18 inches long.
- Vinca minor is commonly used as a ground cover and can fill in large areas, making it effective in discouraging weeds.
- It is often planted beneath mature trees where grass struggles due to lack of sunlight.
- Vinca minor is drought-tolerant and can thrive in areas with dry shade.
- The plant requires good drainage and can tolerate both rich and poor soils.
- Once mature, Vinca minor is relatively drought-tolerant.
- Vinca minor is hardy in USDA zones 4-9.
- It is important to note that Vinca minor is considered an invasive species in some parts of the United States, so it is recommended to check with your local cooperative extension office before planting.
Spacing on Slopes
When planting Vinca minor on slopes or steep banks, it is recommended to space the plants 6 to 12 inches apart. This close spacing helps to quickly establish a dense cover, effectively preventing erosion and eliminating the need for frequent mowing. Within a year, the plants will completely cover the area if spaced 6 inches apart, while it may take up to two years for complete coverage with 12-inch spacing.
Spacing in Landscapes
In flower beds, foundation plantings, or around trees and shrubs, Vinca minor should be planted 12 to 18 inches apart. This spacing allows for adequate growth and spread while preventing overcrowding. Planting at 12-inch intervals ensures coverage within two years, while 18-inch spacing may result in a longer coverage period or potentially incomplete coverage. To enhance visual appeal until the Vinca minor fills in, consider planting annuals between the plants.
Spacing in Containers
For planting Vinca minor in containers, such as rectangular window boxes or 6-inch pots, it is advisable to space multiple plants 6 inches apart. Ensure that the container has adequate drainage holes to prevent waterlogging. Use houseplant potting soil and monitor the soil moisture regularly, as containers tend to dry out more quickly than garden soil.
General Planting and Care Tips
Vinca minor can be planted or transplanted throughout the year, with early spring being the ideal time. It thrives in partial shade, full sun, or full shade, making it adaptable to various lighting conditions. Well-draining soil rich in organic matter is preferred, although the plant can tolerate a range of soil types. To enhance soil quality, mix aged cow manure, sphagnum peat moss, compost, or composted shredded bark mulch into the top 8 to 10 inches of soil before planting.
When planting, ensure that the base of the plant stems is at the same depth in the soil as they were previously growing. Apply a 2 to 3-inch layer of mulch around the plants to retain moisture and suppress weeds, but keep it 1 to 2 inches away from the stems. Water the plants regularly, especially during dry spells, to maintain optimal soil moisture.
Dividing for New Plants
To propagate new Vinca minor plants, division can be performed every five years or so, typically in early spring or fall. New plants form where the stems touch the soil, and dividing encourages the growth of new plants. Water the plants a day or two before dividing. Use sterilized hand pruners to cut the connecting stems 1/4 inch below a set of leaves. After cutting, soak the pruners in household disinfectant for a few minutes and rinse them thoroughly.
To separate the new plant, insert a shovel into the soil a few inches away from the plant and loosen the soil around it. Carefully lift the new plant with the shovel and immediately transplant it to a new location.
Conclusion
By following the recommended spacing guidelines and providing appropriate care, Vinca minor can be successfully established in various settings, adding beauty and functionality to the landscape. Its versatility, adaptability, and low-maintenance nature make it a valuable addition to gardens and landscapes.
References:
- Greenwood Nursery: Vinca Minor ‘Trailing Periwinkle’ Plants for Sale
- The Spruce: How to Grow and Care for Vinca Minor (Periwinkle)
- eHow: How to Space When Planting Vinca Minor
FAQs
How far apart should Vinca minor be planted on slopes?
When planting Vinca minor on slopes or steep banks, it is recommended to space the plants 6 to 12 inches apart. This close spacing helps to quickly establish a dense cover, effectively preventing erosion and eliminating the need for frequent mowing.
What is the recommended spacing for Vinca minor in landscapes?
In flower beds, foundation plantings, or around trees and shrubs, Vinca minor should be planted 12 to 18 inches apart. This spacing allows for adequate growth and spread while preventing overcrowding.
How should Vinca minor be spaced in containers?
For planting Vinca minor in containers, such as rectangular window boxes or 6-inch pots, it is advisable to space multiple plants 6 inches apart. Ensure that the container has adequate drainage holes to prevent waterlogging.
What are the general planting and care tips for Vinca minor?
Vinca minor can be planted or transplanted throughout the year, with early spring being the ideal time. It thrives in partial shade, full sun, or full shade, making it adaptable to various lighting conditions. Well-draining soil rich in organic matter is preferred, although the plant can tolerate a range of soil types. Regular watering, especially during dry spells, is essential for optimal growth.
How can Vinca minor be propagated?
Vinca minor can be propagated through division, typically performed in early spring or fall. New plants form where the stems touch the soil. To divide, use sterilized hand pruners to cut the connecting stems 1/4 inch below a set of leaves. The new plants can then be transplanted to their desired location.
What are some common pests and diseases that affect Vinca minor?
Vinca minor is generally resistant to pests and diseases, but it can be susceptible to aphids, spider mites, and fungal issues like powdery mildew and root rot. Proper care, including adequate spacing, good drainage, and avoiding overwatering, can help prevent these problems.
Is Vinca minor considered an invasive species in some areas?
Yes, Vinca minor is considered an invasive species in some parts of the United States. It is important to check with your local cooperative extension office or consult reliable sources to determine the status of the plant in your area before planting.
What are some companion plants that can be grown with Vinca minor?
Vinca minor pairs well with a variety of companion plants, including spring-blooming bulbs, ferns, hostas, and hellebores. These plants can add color, texture, and diversity to the landscape while complementing the growth habit and aesthetic of Vinca minor.