These easy-growing, weather-hardy flowers look like little glimpses into the galaxy with their deep purple-blue petals with white-cream flecks that change in intensity with the temperature. Petunia Night Sky is a compact, vigorous mounding plant that produces continuous blooms late spring through autumn.
Petunias are fairly heat tolerant, so you shouldnât have to worry about watering them frequently. A thorough watering once a week should be sufficient (unless there are prolonged periods of drought in your area). Avoid watering shallowly, as this encourages shallow roots.
Fertilize petunias monthly with a balanced fertilizer to support their rapid growth and heavy blooming. Double-flowered cultivars enjoy a biweekly dose of fertilizer.
The annual or bedding petunias can be grown from seed sown indoors with warmth in spring in cell trays, seed trays or small pots at a temperature of 18-24°C (65-75°F).
