We don't really get frost on our property. Didn't know that when we bought here, but I sure am glad. We live in the 'Winterwarm' area of Fallbrook. The last several years I spent going out sometimes at midnight when I feared we would have frost...covering all of the plants on the nursery tables with row cover. When you no longer care, that's when you find out how tough things really are and how good our weather here is. It's been a joy since I decided to let the nursery go that I left things uncovered out there..no more running around out there in the cold dark, covering things up....and...nothing has been injured...lol..The longer you're on your property and the more you get planted, the more microclimates you will end up with there and mimimize the frost damage somewhat I would think.
Sagittata will reach 3-5 ft tall x 3-5 ft wide.