Louisville is a zone 6/7
If you like palms there are several you can try. These plants will give your garden a temperate/sub tropical look and
wow your friends and guests.
1.
Trachycarpus Fortunei- a fan palm from Asia- can be bought on line from e bay. Tough cold tolerant to about 0-5 degrees. Should be protected the first several winters. Plant in an optimum situation. These palms can tolerate cold and a covering of snow.
Trachycarpus Takil and
TrachycarpusWagnerianus (stiff leaf form-very attractive) and The
'Taylor' form are variations and perhaps a few degrees more cold hardy. I grow the Fortunei and 'Waggie' in CT- and they have survived winters here in the ground. I am a zone 6/7 also.
hardiestpalms.com :: Trachycarpus fortunei (http://www.hardiestpalms.com/Tfortunei/index.html - broken link)
Trachycarpus fortunei - Wikipedia, the free encyclopedia
2.
Sabal Minor and Sabal McCurtain- the dwarf blue fan leafed palm native to the American SE- cold hardy to zero (the minor) and below zero the 'McCurtain'. Very slow growing, needs lots of heat in the summer. Forms 'Louisiana' and 'Birmingham' grow a little larger and develop a small trunk-but are a wee less cold hardy.
hardiestpalms.com :: Sabal minor (http://www.hardiestpalms.com/Sminor/index.html - broken link)
Dwarf Palmetto - Wikipedia, the free encyclopedia
3.
'Needle Palm' from the American southeast- clumping green leafed fan palm, trunk less- slow growing- hardy to zero or below.
Rhapidophyllum hystrix - Wikipedia, the free encyclopedia
hardiestpalms.com
All these palms can be bought on line- many from e bay.