Dietes grandiflora growing herbaceous geophyte of the genus Dietes also known as Wild iris, Butterfly iris, Fortnight lily, African iris, Dietes grandiflora perennial evergreen used as ornamental plant it’s drought tolerant and attract pollinators and can be used for cut flowers, can grow in tropics, mediterranean, desert, subtropics or temperate climate and growing in hardiness zone 8b+ and hardiness zone 8a with the right care overwinter.
Leaves color green and narrow like sward shape leaves grow in groups linked together.
Flowers color: light purple almost white, the flower has 6 petals in the outer circle, 3 of the petals with yellow stipe in the base and the other 3 petals has brown-black dots in the base, 3 petals in the inner circle in the color purple.
Dietes grandiflora for sale – Seeds or Plants to Buy
Well drained soil, prefer rich soil with organic material, better to fertilize before the blooming season but not must, if there is organic material no need of fertilize, when the plant young (in case of seeds or late planting) better to protect it in the winter in hardiness zone 8-10a
What is the best way to start growing? Plant / Seeds / Vegetative Reproduction propagation by daughter plants
Is it necessary to use vegetative reproduction? Yes
Difficulties or problems when growing: Aggressive
Planting season: Spring in hardiness zone 8, spring to summer in hardiness zone 9-10a, spring to autumn in hardiness zone 10b-11, all year in hardiness zone 12+
Pests and diseases: Leaf miner, spider mites
Pruning season: All year, for reducing that amount of plant better to cut in the winter and better to pull the plant with the roots
How to prune: Dead leaves and dead bloom stems, better not to cut leaves and bloom stems until dry because it has effect on the blooming
Size of the plant? 0.5-1 m, 20-40 inches
Growth speed in optimal condition: Medium growing
Water requirement: Average amount of water / Small amount of water, possible to let it without water for a long period, but the plant prefer regular water especially in the blooming season but with good drainage
Light conditions in optimal condition for growing: Full Sun, can grow in less than full sun but then it will have less flowers
Is it possible to grow indoor as houseplant? No
Growing is also possible in a pot / planter /flowerpot / containers: Yes, but in order to get flowers after few years need to check that the roots system not fill all the planter, if it’s full need to reduce that amount of plants or to increase the size of the container, except this need to pull old plants after having flowers, pruning the leaves and roots and reduce the amount of roots in the pots and let new roots to grow, every few need to check the soil that it’s still viable and if not take care of the soil by washing the old soil and put new, soil better to have potting mix or something similar.
Bloom season: Spring, summer, autumn
General information about the flower Light purple almost white flowers, the flower has 6 petals in the outer circle 3 of the petals with yellow stipe in the base and the other 3 petals has brown-black dots in the base, , 3 petals in the inner circle in the color purple
How to grow Dietes grandiflora from seed
Sowing requirement: Sunny location with good drainage, moist soil, 15-25C (59-77F), for not fresh seeds better to soak in water at least 12 hours
Saving seeds and care until sowing: Dry and dark place, better to keep in in the refrigerate before
Sowing season: Spring to summer in hardiness zone 8-11, possible all the year in hardiness zone 12+
Planting spacing: 20*30cm (8*12 inches)
Depth of Sowing: 0.5-1cm (0.25-0.5inches)
Conditions for seeds germinate: Moist soil with light humidity
Watering requires for Seeds: First week big amount of water after reduce to average amount of water, keep soil moist but not over water and don’t let it dry
Germination time: 2-8 weeks
Condition of seedling: Full sun, regularly water, keep the soil moist
Alternative names: African iris, Wild iris, Butterfly iris, Fortnight lily