If you don't have time to start seeds, buy seedlings from a garden center. Just be sure to buy them after the frost risk has passed, or keep them in a protected porch until the weather is warm enough for planting.
Petunias are warm-season bloomers that cannot tolerate freezing temperatures. Therefore, the "perfect" time to grow them depends on your climate and whether you are starting from seed or planting seedlings.
Timing is the most critical factor when growing petunias, as these tender perennials are highly sensitive to temperature and frost. While often treated as annuals, their success depends on a carefully choreographed planting schedule that aligns with your local climate and chosen growing method. The Golden Rule: Wait for the Warmth when to grow petunias
Once established, maintenance timing ensures continuous flowering:
: To prevent overcrowding, vigorous varieties (like Supertunias) should be spaced to allow several weeks for filling in. 5. Seasonal Transition and Overwintering If you don't have time to start seeds,
Wait until night temperatures stay above 50°F (10°C) .
first hard frost of autumn. In very warm climates (Zones 10–11), they can sometimes be planted in the fall to provide winter color, provided temperatures stay above freezing. Would you like to know the average last frost date for your specific zip code to pin down a planting weekend? AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 15 sites Petunia: Plant Care and Growing Guide - Gardenia.net Petunias are a popular choice for gardeners and are widely used in landscaping, as they add color and texture to gardens and outdo... www.gardenia.net How to Grow and Care For Petunias - The Spruce Apr 23, 2025 — Therefore, the "perfect" time to grow them depends
If your last frost is May 1, start seeds Feb 15–Mar 1 .
