The Q&A Archives: Sowing Vinca Seeds

Question: I was wondering if it is possible to plant Vinca seeds outside instead of indoors. What is the normal germination. Not sure if I'm too late this year for seeds or not.

Answer: It's best to sow Catharanthus (vinca) seeds in March to give the seedlings time to mature so they can flower early in the season. You can sow them outdoors now. Warm temperatures should hasten the growth and flowering of your plants. Vinca seeds will take 14-21 days to sprout in temperatures of 75F-80F degrees.

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