We planted a 6 foot tree purchased from a local nursery. We followed directions. Mulched the area, and watered well. Tree lost its leaves and then sprouted new buds and tiny leaves which are showing signs of curling and a little withered at the ends. We have we done wrong?
Might be wrong district for these. Are there others in the neighborhood? See Sunset WESTERN GARDEN BOOK for more information about growing avocado trees in California.
The other thing about these is that there are quite a number of different varieties available with different cultural requirements. Varieties that do well in areas of California may not do so well in Florida, and vice-versa. Here's a pretty good article on avocados that lists some of the many varieties available: http://www.crfg.org/pubs/ff/avocado.html