Cobaea scandens - Knowledgebase Question

Avatar for Jthelicker
Question by Jthelicker
December 14, 1997
I have been trying to grow cobaea scandens from seed for three years. I get vine but no flower. This year I started the seeds in my basement in April and planted outside at end of May when the weather was very hot. Last week (December 8) a bloom and a bud finally appeared! I did not yank out the vine as I usually do in the fall. Is it cold tolerant?

Answer from NGA
December 14, 1997
Cobaea scandens, the 'Cup and Saucer Vine', is a half-hardy perennial that's usually grown as an annual. It's native to Mexico. You were wise to start the seeds indoors and then transplant outside when the weather warmed. If you keep it in a warm and very sunny area, it will bloom about mid-summer. I think you had success this year because the weather was warmer than usual. In years when summer is cool, the plant won't bloom. But it's a vigorous climber, so it's an interesting garden plant. I think I'd take a chance and plant it again next year - just in case!

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