Tall South African origin hybrid corm with sword-shaped fan of leaves and one-sided spires of funnel-shaped flowers in every colour from cream to deep purple through high summer.
Hardiness ratings
| System | Rating | Temperature range | How to read it |
|---|---|---|---|
| USDA hardiness zone | Zone 7–10 | −17.8 °C to 4.4 °C | Plant tolerates down to this zone |
| RHS hardiness rating | H3 | −5 °C to 1 °C | Plant needs at least this level of cold tolerance |
| Canadian plant hardiness zone | Zone 7–9 | −12 °C and warmer | Plant tolerates down to this zone |
| Australian (ANBG) zone | Zone 2–7 | −10 °C and warmer | Plant tolerates down to this zone |
Growing notes
- Plant corms at fortnightly intervals from spring to early summer for continuous cut flowers through high summer and autumn
- Among the most prized cut flowers of the late-summer florist trade — sturdy, long-lasting, brightly coloured
- Lift corms and store dry in cool dry conditions below zone 8
- Cultivar group spans an enormous range of size and colour — Grandiflorus (large), Nanus (dwarf), Primulinus (graceful)
Pet caution: Garden gladiolus is listed as potentially harmful to cats and/or dogs. Keep pets from grazing on it, and contact a vet if you suspect your animal has eaten some.