The Q&A Archives: Thunbergia in New Jersey (Zone 6)

Question: I live in zone 6. Can Thunbergia seeds be planted directly in the ground after the last frost date? I plan to grow them on a trellis in front of a 5 foot high fence. How long will it take before they start blooming, if I plant in May? Thanks for your help. Judy Tenafly, NJ

Answer: You can try planting them outdoors after the last frost, but it might be a good idea to try starting some indoors too. Sow seeds indoors 6 to 8 weeks before the last frost date; germination will take place in 10 to 15 days if kept at a temperature of 70 to 75 degrees F. Transplants should begin to flower in mid-July; direct seeded plants may take a little longer..

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