Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
On Jun 28, 2008, anniehonjo from london United Kingdom wrote:
I live in the UK and bought the seeds of this plant when I visited Kew Gardens quite a few years ago. I forgot about the seeds and only planted them last spring. The shoots and leaves emerged fairly quickly, growing steadily larger through the summer so that I had to repot them a number of times - I only have a small container garden which is completely pea-shingled, so all my plants need to be in pots. The salvias didn't flower last year so I assume they are biennial in this part of the world, although on one US site I notice they are described as flowering the same year. They are now in flower, doing extremely well, still in their pots, and have grown to about 3 feet. They are thirsty plants, but that could be because they are contained. Has anyone else attempted growing them as part of a container garden? Incidentally, I have always aimed for the English cottage garden effect wherever I have lived; ironically the only garden I have ever achieved this effect with is the present, no-soil one! When looking out from my kitchen window, I can't see the containers, just a lush conglomeration of hydrangea, nandina, hosta, lavender, rosemary, lobelia, echinacea, crocosmia, cistus and the lovely salvia sclarea turkestanica alba! If anyone out there has had success in maintaining these lovely plants in containers for more than one year, I would love to hear your method. I will have a go at over-wintering them, but I also plan to harvest the seeds this year in case I can't keep the plants going in their pots for a second year.
On Jun 24, 2006, GreatBarrington from Great Barrington, MA wrote:
This appeared in my garden last year--presumably from a mistaken order of what I expected to be a red salvia. All I see on my order form from Select Seeds (a company I do NOT recommend) is "clary sage." It's huge and a bit weird looking--my husband said it looks like something that might grow big enough to eat us. But in the right place, it'll be dramatic. I'm going to save seed and plant as a border plant next year. Apparently biennial, not perennial as stated here.