|US Patent #||
|EU Grant #||
|Size (HT/W/FL HT)||
16" / 30" / 22"
|Most Active Growing Season|
Very good drainage and mineral soil.
5.8 – 7.2
75 – 100 ppm
Dormant in winter.
Dry completely between waterings.
Low to moderate needs in the garden. Requires good drainage.
Blue-green leaves open like cabbages (or double roses). Compared to 'Hab Grey', more upright, smaller leaves, shorter internodes.
Edging, mass planting, mixed beds, borders or dry garden.
|Finish Time to 4"||
8 – 10 weeks
Very long lived. No disease problems.
Obligate long day plant. Pinch 1 week after transplant. Grow with 60°-65° F nights, 75°-80° F days. Provide night interruption or day length extension to force flowering under natural short days. Supplemental lighting during cloudy days has proven beneficial for flower production. AVOID CHEMICAL SPRAYS.
'Rosetta' is a force of nature with blue-green leaves that open like icy-blue roses on the new growth in the spring. These blue-green leaves stay very attractive on their upright arching stems all summer. In late summer, white flowers form in clusters on the ends of each branch. We've watched this plant in awe for several years and hope you will be equally spellbound.