do you know what USDA zone you're in?for sure you can grow california desert palms (washingtonia filifera) but they're gonna get a heckuva lot bigger than 6 or 7 feet.dwarf palmettos are probably going to be hardy enough for you, though they're more common in the southeast where it's wetter.phoenix robellini is a dwarf date palm that doesn't get much bigger than 7 or 8 feet but they're not very cold tolerant. if it dips below freezing for long periods of time, you'll probably have to protect it or it'll go belly up.
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