Helianthemum nummularium grandiflorum <br>COMMON ROCK ROSE

Showy with very large yellow flowers. Grows well in well-drained soils, typically blooming from May to September once established.

Type: Hardy perennial

Hardiness zones: 4-7

Height: 4", 10cm 

Location: Sun

Seeds per packet: 50

By Ghislain118 http://www.fleurs-des-montagnes.net - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=12777708