Zone 4 · Threadleaf Coreopsis
Planting Threadleaf Coreopsis in Zone 4
Coreopsis verticillata
✅ Threadleaf Coreopsis thrives in zone 4 (hardy 4–9)
Can I plant today?
✅ Safe to plant Threadleaf Coreopsis outside
Last frost has passed. Plant in spring. Cheerful daisy-like flowers over a long season. Shear mid-summer for a rebloom.
Evaluated for June 13, 2026 ·
Zone's last frost
around May 15
Zone's first frost
around September 15
Bloom window
June – September
Peak bloom
July
Sun required
full sun
Mature height
24"
Spacing
18" apart
Type
perennial
How to plant Threadleaf Coreopsis in zone 4
Plant in spring. Cheerful daisy-like flowers over a long season. Shear mid-summer for a rebloom.
Pair with these for continuous bloom
Threadleaf Coreopsis peaks in July. These companions keep your bed in color before and after.
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