This is one of the few winter hardy Cactus to zone #5. Most people don't associate using a cactus as a perennial in Wisconsin.
Pronunciation
(oh-PUN-shee-uh)
Plant Type
All Plants, Perennials Hardy
Hardiness Zone
at least to #5
Sunlight
full sun
Moisture
average
Soil & Site
average to well drained,
Flowers
large yellow, in early June.
Fruit
seed pods that turn red
Stems
pads covered with spines, shrivel during the winter
Dimensions
12" tall
Propagation
rooting the pads
Misc Facts
(syn. O. compressa, O. calciola, O. pollardii, O. vulgais)
Author's Notes
For many years I belonged to the Wisconsin Cactus and Succulent club. One year we took a bus trip to Spring Green, Wisconsin USA to see the Opuntia in bloom. I will always remember the trip. I had a patch of growing at my house, where I bank there's a patch and a friend of mine has a large patch. There are also some growing at the Wehr Nature Center and Boerner Botanical Gardens. So it does exist if you know where to look.