The illustrated growing guide
Zinnia
Zinnia elegans
Family Asteraceae
Grown as an annual
The highest flowers-per-effort plant in existence. Direct sow after frost. Cut when stem passes the "wiggle test" (stiff, not floppy). The more you cut the more you get.
Full Sun
Moderate water
Very Fast growth
Attracts butterflies
Attracts bees
None winter chillI
Overview
Will zinnia suit your garden, and what goes wrong.
Will it fruit where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what zinnia actually needs.
Life cycleAnnualZinnia at a glance
Common zinnia problems
- Japanese Beetle (minor)
- Powdery Mildew (late season)
- Alternaria
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Growing
Light, water, soil, propagation and the season’s jobs.
How to grow zinnia: light, water & soil
How to plant & propagate zinnia
When to spray zinnia
Growing season. Mildew-resistant series ('Benary's', 'Profusion') + soil-level watering beats spraying.
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The year
What zinnia asks for, month by month.
The zinnia year, month by month
BloomHarvestWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Harvest — picking time — check ripeness every few days.
The zinnia year as text
- Jan quiet month
- Feb quiet month
- Mar quiet month
- Apr quiet month
- May quiet month
- Jun bloom, harvest
- Jul harvest
- Aug harvest
- Sep quiet month
- Oct quiet month
- Nov quiet month
- Dec quiet month
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
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Ecology & uses
What it does for the garden, and what it is grown for.
Zinnia in the garden system
- Herbaceous layer annual
- Nectary/insectary
What zinnia is grown for
✓ Commonly eaten
Harvesting & storing zinnia
Cut all summer — cutting MAKES more blooms. About 60-70 days from planting.
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
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Cultivars
Named varieties of zinnia, ruled as a catalogue.
Best zinnia varieties & cultivars
'Benary's Giant', 'Queen Lime', 'Profusion'
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Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to zinniayet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
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Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
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Questions
Zinnia questions, answered straight.
Is zinnia safe for kids and pets?
Zinnia is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
When do you harvest zinnia?
Cut all summer — cutting MAKES more blooms. From planting, expect about 60-70 days to maturity.
How do you propagate zinnia?
From seed.
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Elsewhere
Where zinnia sits in the library.
Sunflower
Peony
Daylily
Hardy Banana