Cardinal Climber - Knowledgebase Question

Dover, MA
Question by NWolfman
February 10, 1998
Can I start cardinal climbers indoors, if so, how many weeks before last frost? Or do they need to sown directly into the ground?


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Answer from NGA
February 10, 1998

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Seeds of Ipomoea, the Cardinal Climber, can be sown indoors 4-6 weeks before planting outdoors. To hasten germination, chip the seedcoat and soak seeds overnight before planting. Seeds take 5-21 days to germinate at temperatures of 70F to 85F.

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