📍 Evansville, IN · Zone 7a · Last frost Friday, April 10, 2026
✏️ ChangeWhen to Plant Zinnia in Evansville, Indiana (47708)
Location
Evansville, Indiana
ZIP Code
47708
USDA Zone
7a
Last Frost
Friday, April 10, 2026
📅 Your 2026 Planting Dates
Direct Sow Outdoors
Friday, April 17, 2026
Based on last frost Friday, April 10, 2026 · Zone 7a
Pro tip: Sow Zinnia directly outdoors 1 week after your last frost date — it needs warm soil.
🌿 Plant Details
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Moderate (1 inch/week)
↔️
Spacing
12" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 5-10 days
Ready to Plant Zinnia in Evansville?
Get your seeds now so they're ready by Friday, April 17, 2026.
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🤝 Good Companions
Full Companion Planting Guide for Zinnia
See which plants help Zinnia thrive, which to keep away, and raised bed layout tips →
🛠️ Supplies You'll Need
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Common Zinnia Varieties
Popular cultivars to look for at your local nursery or seed supplier.
California Giant
Large 4–5 inch double flowers on tall stems; superb for cutting.
Benary's Giant
Top-rated cut flower series with strong stems and an enormous color range.
Envy
Unique lime-green zinnia that pairs beautifully with warm-toned flowers in arrangements.
Zahara
Disease-resistant series with smaller, mounded habit — excellent for beds and containers.
🌾 Seed Saving Guide
🟢 EasyWhen to Harvest Seed
Let flower heads dry completely on the plant — petals should be fully brown and papery.
Processing
Pull dried flower heads apart to find arrow-shaped seeds, dry 1 additional week.
Seed Viability
Up to 3 years when stored cool, dark, and dry.
Pro Tip
Zinnias cross easily — for pure color, save from just one variety or bag flowers before they open.
Raised Bed Planting Guides
A 4×8 bed fits 32 plants of Zinnia. See plant counts, spacing grids, and companion pairings for every bed size →
Frequently Asked Questions
When should I plant Zinnia in Evansville, Indiana? +
In Evansville (Zone 7a), direct sow Zinnia outdoors around Friday, April 17, 2026.
What is the last frost date for Evansville, Indiana? +
The average last spring frost date for Evansville, Indiana (ZIP 47708) is around Friday, April 10, 2026. This is based on NOAA climate normals for USDA Zone 7a.
How long does Zinnia take to grow? +
Zinnia typically matures in about 60 days from direct sowing. In Evansville, that means you can expect harvest around Friday, April 17, 2026 plus 60 days.
Should I start Zinnia indoors or direct sow in Indiana? +
Zinnia does best when direct sown outdoors. In Evansville, sow directly around Friday, April 17, 2026.
Other Plants for Evansville
Growing Zinnia in Zone 7a
Zinnia (Zinnia elegans) is a popular garden vegetable. In Evansville, Indiana, which is in USDA Hardiness Zone 7a, you should direct sow seeds around Friday, April 17, 2026.
Your average last frost date is Friday, April 10, 2026. Zinnia grows well when direct sown, as it doesn't transplant well or germinates quickly outdoors.