Overwintering Tender Snail Vine - Knowledgebase Question

Monroe Twp., NJ
Question by brunell14
October 22, 2000
My tender snail vine, or caracalis must come in for the winter. The Monticello plantation digs them up, but tuber or whatever is small. My basement if bout 65 degrees; my garage varies & can drop below freezing if my zone 6 has a cold winter. How can I preserve the vine?
Also have a mandevilla vine. My last one didn't survive indoors. Now what?

Answer from NGA
October 22, 2000


Vigna caracalla can be dug and stored as one would handle dahlias. You may need to experiment to find a spot with the right temperature, somewhere closer to 45 degrees.

Mandevilla can be kept growing all winter in a very bright location, or it can be allowed to go semi dormant. To do this, trim it back, reduce the temperature to about 50 degrees, hold back on watering so that the soil is just barely moist, and do not fertilize. The plant will probably defoliate, but should return to active growth in spring when placed in a warmer bright location and watered and fertilized again.

Good luck with your plants!

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