Vinca Flower Spacing. This tough long blooming Vinca offers a nice contrast to many other garden plants. Thrives in full sun to part shade in average dry to medium moisture well-drained soils.
Dec 09 2018 Spread a 1- to 2-inch layer of mulch around the plants with a trowel or garden fork. May 31 2018 Space your plants 6 to 8 inches 15 to 20 cm apart. The plants will completely cover the area in one year when planted 6 inches apart.
May 18 2021 Keep your plants 6 to 8 inches 15 to 20 cm apart.
When planted 18 inches apart the plants will take longer to cover the ground or may not ever completely cover it. Jan 18 2020 Space lesser periwinkle plants 6 to 12 inches apart on slopes or steep banks to eliminate erosion and the need for dangerous mowing. 30cm row gap minimum Sow and Plant. When working to prevent vinca plant diseases soil conditions are of great importance.