Mustang

Ah. DAs. They are the most common tree fern over here. I've got a number of them, from a 9 footer down to 'potters' (just starting to form trunks).

I leave mine out all year around. If it gets cold, I stuff a ball of fleece into the crown. That's all. We're having -4C temperatures right now at night, and the fronds aren't even phased by it.

In summer, I have a micro-irrigation system that sprays/drips on the crowns and trunks a couple of times a day, and they really respond by pushing out huge fronds.

For me, they make a nice backdrop for the more tender tree ferns I've got, providing shade and wind protection. My other tree ferns are tucked up inside the greenhouse with a fleece cover.