The Q&A Archives: Mandevilla Seed Pods

Question: I have several mandevilla vines which seem to flower and grow well here in Hawaii. A lot of morning walkers have commented on the vines and have asked me if they can take cuttings so that they could try and propagate it. However, I'm wondering if these mandevilla vines ever have seeds or pods and if so, would it be viable to grow more vines from them? I've had these plants for a couple of years and have never seen anything that looks like seeds.

Answer: You can propagate Mandevilla by root division, stem cuttings or seed. If your vine is flowering, and there are insects around, the flowers should produce viable seed. Mark the flowers by loosely tying a piece of bright yarn on the vine (so you don't forget where they were) and then watch and wait until the petals fall and the swollen area at the base of the flower turns a tan color. This indicates the seeds are ripe and ready to harvest. Mandevilla seeds should be sown on the surface of moistened seed starting mix in individual peat pots. Just barely press the seeds into the starting mix and place the pots in a warm area. Seedlings should sprout in 14-30 days.

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