According to this nursery, windmill palms "Grows in Zones 5b -10. Refer to Zone Map"
http://www.willisorchards.com/produc...5#.UL_HfYNLV2A
So why not Windsor or Toronto ? Are we residents in S/SW Ontario too slow in introducing this subtropical look into our streetscapes, front and back yards ?
I hope at least residents in the Niagara regions (zone 7a) talk to their parks officials, turn this tourist region into a subtropical look in some selected locations !