Hardy in zone 3, Calgary, Alberta, Canada; long bloom period.
by altagardener Feb 29, 2008 5:35 AM
Draba rigida begins spring growth from the centers of the individual small rosettes in early March in northern zone 3.
by altagardener Apr 26, 2009 3:46 AM
Flower buds forming in early May in northern zone 3.
by altagardener Apr 26, 2009 3:46 AM
The flower stems elongate through the bloom period.
by altagardener Apr 26, 2009 3:46 AM
