Brogdon is an excellent cold hardy avocado that is easy to recognize with it purple skin.
 
Taste: The green-yellow flesh is creamy with high oil content, the flavor is rich and nutty.
Tree size: 25' x 15'
Fruit size: Small to Medium (0.5 -1.5 lb)
Flower type: B
Cold tolerance: 20F
Season: September - November