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Stylidium graminifolium
Stylidium graminifolium is a grass-like perennial herb from eastern and southeastern Australia, grown for its pink, butterfly-shaped flowers borne on tall, trigger-hinged spikes. It is easy to grow in full sun and poor, well-drained soil and is one of the few triggerplants sold as seed.
Stylidium graminifolium, the grass triggerplant, is a dicotyledonous plant that belongs to the genus Stylidium (family Stylidiaceae). This species used to belong to the Stylidium graminifolium complex, but the name was conserved for this single species when two others were split from the complex and introduced as new species in 2001. S. graminifolium is endemic to Australia and is the Stylidium species with the widest distribution throughout Australia. It is a perennial plant with grass-like leaves and is easily cultivated. It has been considered to be a carnivorous or protocarnivorous plant because it possesses glandular trichomes underneath the flowers that can trap and digest prey.
Stylidium graminifolium is one of the few Stylidium species commercially available for sale as seed. This species, along with six other triggerplants, was tested for horticultural value and cold hardiness by Douglas Darnowski in the United States from 2000 to 2002. Dr. Darnowski's study concluded that S. graminifolium was able to survive cold temperatures down to -10°C, making it suitable for growing outside in as low as USDA hardiness zone 8. Darnowski also postulated that S. graminifolium's attractive floral spikes could be of use in floriculture and could be used to replace purple loosestrife in winter and spring arrangements. It has a relatively long flowering period and has somewhat specific conditions for germination, including smoke treatments and higher temperatures to simulate a bushfire, though germination can occur without these conditions. These germination requirements reduce the risk that it will become an invasive species. It is also able to grow on nutrient-poor soils and withstand significant drought. These attributes increase its potential for floricultural use.
S. graminifolium has one of the widest ranges in the genus Stylidium, being native to Tasmania, Victoria, New South Wales, Queensland and South Australia. Its most common habitat is dry sclerophyll forests with nutrient-poor soil conditions.
Text excerpted from the Wikipedia article Stylidium graminifolium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
