Gladiolus
Gladiolus is a flower in the Iridaceae family. It grows best in full sun with medium moisture, and is listed for USDA zones 7-10. Plants sit about 6 inches apart.
Varieties
1 · sorted by days to maturity▸Gladiolus
PROPAGATION CATEGORY: Corm (not currently in seed catalog). Bloom season: Mid to late summer. Attracts: Bees, butterflies, hummingbirds. Flower meaning: Strength, integrity.
Gladiolus produces tall, dramatic spikes of funnel-shaped blooms in nearly every color, a classic cut flower. Plant corms after the last frost; in zones colder than 7 the corms are lifted and stored over winter.
Growing notes: Botanical name: Gladiolus × hortulanus|Hardiness zones: 7-10|Propagation: corm|Sun needs: Full sun|Water needs: Medium|Mature height: 2-5 feet|Spacing: 6 inches|Bloom season: Mid to late summer
Plant spacing
In a square-foot bed, space gladiolus about 6 in apart — that fits 4 plants in each 1-foot square (2×2). Wider rows or containers space the same.
Plan your gladiolus planting
Add gladiolus to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.
Start your free plan →Growing timeline
Care & troubleshooting
No curated care & troubleshooting advice for gladiolus yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.