Remove spent blooms to encourage continuous flowering. Pinch off the faded flowers and any developing seed pods.
Water petunias consistently, ensuring the soil remains moist but not waterlogged. Water them deeply, especially during dry spells, but allow the soil to dry slightly between waterings.
Feed petunias with a balanced, water-soluble fertilizer every two weeks during the growing season. High-phosphorus fertilizers (like a 10-30-20 mix) can boost blooming.
Ensure petunias get at least 6 hours of direct sunlight daily. They thrive in full sun, which promotes healthy growth and abundant blooms.
Pinch back the tips of the plants regularly to encourage bushier growth and more flowers. Prune leggy stems to maintain a compact shape and encourage new growth.
Keep an eye out for common pests like aphids and caterpillars. Use appropriate insecticidal soap or natural predators to manage infestations.
Plant petunias in well-draining soil enriched with organic matter. Avoid heavy, clay soils that retain too much moisture.
Apply a layer of mulch around the base of the plants to retain moisture, suppress weeds, and maintain an even soil temperature.