Growing notes
Zinnias are very prolific bloomers all season long, performing better in garden beds than containers, and can be direct-seeded once soil temperature reaches at least 70°F. They prefer full sun for 8+ hours a day, well-drained soil, and are highly attractive to pollinators, particularly butterflies.
Harvest signs
Removing old blooms from the plant will promote the production of new flowers; for cut flowers, change water every two days to keep displays fresh
▶Planting reference— Depth, spacing, pH, light
▶Pests & diseases— powdery mildew, damping off, fungal diseases (general)
Companions & antagonists
Common questions
How much water does zinnia need?
Zinnia has middle-of-the-road water needs. Aim to keep soil moisture around 25–50%, letting the top inch dry slightly between waterings rather than staying soggy.
Can I grow zinnia in a raised bed or container?
Yes — zinnia does well in raised beds and is happy in a decent-sized container too, as long as drainage is good.
Does zinnia come back every year?
No — zinnia is an annual. It completes its life in one season, so you replant it each year.