Petunia Seeds,
Superbissima Cerny's Triumph Mix

Start seeds indoors 8-10 weeks before the last expected frost. Once all danger of frost has passed and temperatures stay consistently above 50 F, transplant seedlings outdoors. Petunias need warm temperatures and do not tolerate frost, so be sure to check your local area’s frost dates before planting. If you’re not sure how to do that, take a look at our blog post ‘Our Experts Answer Questions, Share Resources.’

Surface sow the seeds, as they need light to germinate. Keep the soil at a temperature of 70-85 F during germination. To maintain moisture, cover the seed tray with plastic wrap or a humidity dome. Once seedlings have two to three sets of true leaves, transplant them into individual pots. Before planting them outdoors, harden off the seedlings by gradually exposing them to outdoor conditions over a period of 7-10 days.

Plant petunias 10-12 inches apart in a sunny location with well-draining soil. Water regularly but avoid overwatering, as soggy soil can lead to root rot. Applying a thin layer of mulch will help retain moisture and prevent weeds. For a bushy growth, pinch back young plants. Keep an eye out for common pests like aphids and caterpillars, and prevent fungal diseases with proper air circulation.

• Petunias will readily self-seed in mild winter climates.
• To save seed, hand-pick the brown seed pods.
• Take care to collect the seed pods before they burst and spread the seeds across the garden.
• Store the seeds over winter in a cool, dark, dry place.