Zone 6 · Gladiolus
Planting Gladiolus in Zone 6
Gladiolus × hortulanus
✅ Gladiolus thrives in zone 6 (hardy 3–10)
Can I plant today?
✅ Safe to plant Gladiolus outside
Last frost has passed. Plant corms after last frost, 4 inches deep. Stagger plantings every 2 weeks for continuous bloom. Dig in fall in zones 3-6.
Evaluated for April 27, 2026 ·
Zone's last frost
around April 15
Zone's first frost
around October 15
Bloom window
July – September
Peak bloom
August
Sun required
full sun
Mature height
48"
Spacing
6" apart
Type
bulb
How to plant Gladiolus in zone 6
Plant corms after last frost, 4 inches deep. Stagger plantings every 2 weeks for continuous bloom. Dig in fall in zones 3-6.
Pair with these for continuous bloom
Gladiolus peaks in August. These companions keep your bed in color before and after.
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