Description and General Information:
Saponaria lutea is a low, tufted plant with narrow but short, almost grass-like leaves. Small flat-topped clusters of flowers arise on 5-10 cm stems. Individual flowers are about 1 cm across with five narrow, pale straw-yellow petals.
This species is native to the southern Alps where it grows among subalpine to alpine grasses and rocks.
Full sun, well-drained soil and preferably, limestone-based soil, it ideal for this plant. Hardy to zone 3.
May to July
Direct sow at 13-20 C; germination should happen within 1-3 months.
Not commonly practiced.
2-3 cm long cuttings may be taken in late summer.