Preparing Petunias for Winter - Knowledgebase Question

Miles City, MT
Avatar for picknick
Question by picknick
September 30, 1999
We live in a very cold winter climate, and petunias do not last through the winter. I find it a waste (and sad!) to let the petunias die in winter, and then purchase them again in the spring. Is there anything I can do to keep them for next year, without bringing them in and treating them like houseplants? I've not had much luck with that option.

Answer from NGA
September 30, 1999
Although petunias are classified as a tender perennial they are usually grown as annuals. I live in a climate where they temperatures would allow them to grow year around, but they seem to lose vigor and become straggly. I agree, it is no fun to lose plants at the end of the season! You might try taking stem tip cuttings from newer growth and root them. They would need plenty of sun or 14-16 hours of artificial light daily. Petunias also grow readily from seed. Sow when temperatures reach 59 degree F. Just barely cover seeds with soil as they need light to germinate. They germinate in about 10 days and will flower the same season. I hope this info helps!

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