Fortnight Lily

The Fortnight lily (variously known as African iris or diestes bicolor) gets its name from its recurring two-week flowering cycle during spring and into summer. This is a narrow-leaved species that grows to 30 in. tall with medium green leaves that quickly grows to form dense clumps in gardens and landscapes. Pale yellow flowers to 2 in. in dia. have broad overlapping petals with a maroon spot at their base.

This South African species provides fine foliage texture and attractive yellow flowering for accent character among other foliage plants. It is quite robust and should be divided every 3-4 years to maintain a suitable size and character. It is a good plant for pots, parkways, around bioswales, and feature elements in raised planters.

Plant Type: Perennial
Foliage Character: Evergreen
Habit: Dense, Clumping
Growth Rate: Fast
Height: 30 in.
Width: 3 ft. - 6 ft.
Water Needs: Moderate 4
Foliage Color: Medium green
Flower Color: Yellow
Flower Season: Summer, Spring, Fall
Soil Adaptations: Well-draining soil, Loam, Clay
Exposure Adaptations: Morning sun, Frost, All day sun, Partial sun
Function: Foundations, Flowering accent plant, Container plant, Borders