R Ranson wrote:Are cactus annuals?
As far as I know, all cactus are perennials, and typically quite slow growing. (If it was ambiguous, I meant my last post as a warning. Those were bad geese for eating my prickly pears! Or bad me, for assuming they wouldn't.)
R Ranson wrote:How far north will they grow?
Again, depends on the cactus. A few prickly pears such as Opuntia humifusa are hardy to zone 2 or 3. (This species grows naturally in the more arid parts of Montana.) I am growing Opuntia ficus-indica, which is more commonly cultivated for its pads and fruit. Alas, it is only hardy to zone 8 or 9, so I have to take mine indoors for the winter
R Ranson wrote:Are they yummy?
I happen to like the fruit.
Mother Earth has a good article on prickly pears and their uses:
http://www.motherearthnews.com/real-food/prickly-pear-zmaz76soztak.aspx