Hypericum cerastoides

The specific epithet is a reference to Cerastium, and the narrow gray-green leaves of this wonderful sun-loving groundcover do indeed bear a slight resemblance to snow-in-summer.  They don't melt in hot humid weather, however, as Cerastium tomentosum so often does. The bright yellow, quarter-sized flowers in late spring and early summer are what you'd expect from a hypericum, although considerably larger than what you'd expect from a dwarf one. Propagated from seed. Deep 3.5-inch pots.  Zone 6. Photo: Krzysztof Ziarnek, Kenraiz