Answer: 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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