Also known as rose periwinkle or Madagascar periwinkle (Catharanthus roseus), annual vinca is a versatile little stunner with shiny green foliage and blooms of pink, white, rose, red, salmon, or purple. Although this plant isn’t frost-hardy, you can grow it as a perennial if you live in USDA plant hardiness zones 9 and above. Collecting vinca seeds from mature plants isn’t difficult but growing annual vinca from seed is a little trickier. Read on to learn how.
How to Gather Vinca Seeds
When collecting vinca seeds, look for long, narrow, green seedpods hidden on the stems beneath blooming flowers. Snip or pinch the pods when the petals drop from the blooms and the pods are turning from yellow to brown. Watch the plant carefully. If you wait too long, the pods will split, and you’ll lose the seeds. Drop the pods into a paper sack and place them in a warm, dry spot. Shake the bag every day or two until the pods are completely dry. You can also drop the pods into a shallow pan and put the pan in a sunny (non-windy) location until the pods are completely dry. Once the pods are completely dry, open them carefully and remove the tiny black seeds. Place the seeds in a paper envelope and store them in a cool, dry, well-ventilated location until planting time. Freshly harvested seeds usually don’t do well because germinating vinca seeds require a period of dormancy.
When to Plant Annual Vinca Seeds
Plant vinca seeds indoors three to four months before the last frost of the season. Cover the seeds lightly with soil, then lay a damp newspaper over the tray because germinating seeds of vinca require total darkness. Place the seeds where temperatures are around 80 degrees F. (27 C.). Check the tray daily and remove the newspaper as soon as seedlings emerge – generally two to nine days. At this point, move the seedlings into bright sunlight and room temperature is at least 75 degrees F. (24 C.).
-
Best Soil Tor Tomatoes: How To Cultivate The Perfect Blend & Add Amendments For A Bountiful HarvestGive your tomato plants the foundation they need. Learn how to mix the ideal soil and choose the right amendments for your most abundant harvest yet.
-
Want To Know How To Make A Spider Plant Bushier? 4 Secrets For Lush & Bushy SpidersAre you looking for ways to make your spider plant look bigger or more dramatic? Follow these quick and easy tips on how to make a spider plant bushier
-
My Vinca Is Turning Yellow: What To Do With A Yellowing Vinca PlantAre the leaves on your vinca plants turning yellow? It may be a disease or soil that isn't draining well. Check your plants' growing conditions first.
-
Vinca Plants Problems – Common Vinca Insect Pests And DiseasesA lovely bedding plant or groundcover and while it's often easy-care, vinca can have issues with disease, insects and unsuitable growing conditions.
-
Madagascar Periwinkle Care: Growing Madagascar Rosy Periwinkle PlantThe rosy periwinkle plant is tolerant of many growing conditions where seasons are warm annually and soil is well draining. Some notes about rosy periwinkle and how and where to grow Madagascar periwinkles can be found in this article.
