500 square meters I understand, but what is levels? Elevation change?

I'd love to see your giant ferns when they're not covered in snow. Pretty cool! We have a few varieties that can get big (sword fern, especially) but they seem to average out around 3 or 4 feet tall.

AWESOME that you're making a native yard! So much cooler than looking after that darn monoculture grass, for you and for the other critters.