Zinnia

Flower · warm season

A full magenta zinnia flower
Photo: Cbaile19, Wikimedia Commons (CC0)

When to plant

  • Sow seeds outdoors about 1 week after your average last spring frost.
  • Ready to harvest about 70 days after planting.
  • Sow again every 3 weeks for a steady harvest.

Cut-and-come-again flower; draws pollinators.

Frost dates depend on where you live. Enter your ZIP code to get exact dates.

Growing basics

Not edible.

Sun
Full sun (6+ hours)
Spacing
9–12 in
Soil temperature
At least 60°F
Time to harvest
About 70 days
Containers
At least 1 gallons
Plant family
Lettuce and daisy family
Seeds keep
About 5 years

Pests and problems

Grow it well

Tips

  • Plant flowers with your vegetables. Zinnias, sweet alyssum, dill, and marigolds bring in bees, plus the ladybugs, lacewings, and hoverflies that eat aphids and caterpillars.
  • Snip off faded flowers. Zinnias, cosmos, marigolds, and other annual flowers keep blooming longer if you cut off the old flowers before they set seed.

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