Petunias need full sun (6+ hours) to bloom well. A north-facing location likely lacks sufficient light—consider shade-tolerant alternatives like impatiens or coleus for that spot.
If you keep petunias in sun: deadhead spent flowers frequently to promote new blooms. Water by weight—after watering, the pot should feel heavy; wait until it feels light before watering again (typically every 2–5 days). Use a saucer, let sit 5–10 minutes, then drain excess. Fertilize monthly during the growing season with a balanced formula.
For hummingbirds, also try salvia, fuchsia, or trumpet vine in sunnier spots. Visit a local nursery for expert advice on container plant selection and care.
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