Q.Can pussy willows grow in Louisiana?
Can pussy willows grow in Louisiana?

Certified GKH Gardening Expert
The short answer is: sort of.
The long answer is a little more satisfying. Pussy willows grow in USDA zones 4-8. Here's a map of Louisiana's zones:
https://www.gardeningknowhow.com/planting-zones/louisiana-planting-zones.htm
If you're in the northern two thirds of the state, you're in zone 8.
Just because the tree will grow, however, doesn't necessarily mean it'll be at peak performance. Pussy willows need a certain amount of chilling during the winter in order to flower. If you're in zone 8, there's a chance your tree just won't get cold enough some years to bloom well.
You can read more about it here:
http://ekps.tamu.edu/details?id=351