Dietes, commonly called African iris, butterfly iris, or fortnight lily, is an evergreen clumping perennial with sword-shaped foliage and attractive iris-like flowers.
Quick Care Guide
Light: Full sun to partial shade
Soil: Well-drained soil
Water: Moderate
Fertilizer: Light feeding
Pruning: Remove damaged foliage and spent flower stalks
Best Use: Borders, containers, mass plantings
Cold Hardiness: Protect during severe freezes
Overview
Dietes forms dense clumps of evergreen foliage. Its flowers appear repeatedly throughout the growing season, with individual flowers lasting only a short time but being replaced by additional buds.
Although Dietes can handle some drought, East Texas gardeners will generally obtain better growth and flowering with regular moisture during active growth.
Light Requirements
Full sun produces the best flowering, but partial shade is tolerated.
Some afternoon shade can be useful during extreme summer heat.
Soil & Planting
Plant in well-drained soil.
Dietes can tolerate clay, loam, and sand, but water must be able to drain away from the rhizomes.
Watering
Keep newly planted Dietes moderately moist.
Established plants tolerate some drying between waterings but appreciate regular moisture during hot weather.
Fertilizing
A balanced fertilizer applied in spring can support growth and flowering.
Avoid excessive feeding.
Pruning
Remove old leaves when they become brown or damaged.
Flower stalks can be removed after flowering if seed production is not desired.
Seasonal Care in East Texas
Winter: Dietes can be damaged by cold weather because it is better adapted to warmer zones. Protect plants during unusually cold conditions.
Spring: Remove winter-damaged foliage and resume active watering.
Summer: Maintain moderate soil moisture.
Fall: Continue regular moisture while plants are actively growing.
Pests & Diseases
Nematodes and scale insects can occasionally cause problems.
Where to Find Quality Dietes
Gen1 Greenhouse offers African iris for East Texas landscapes, borders, containers, and mass plantings.
Other Care Guides
See our other Gen1 Greenhouse care guides for evergreen perennials and low-maintenance landscape plants.
