A friend in Arlington showed off his garden to me and some other friends over the weekend. I was absolutely amazed at what he is growing--this is surely the largest collection of in-ground hardy palms in the Washington, DC area. Among the palms were 3 large, trunking windmill palms (Trachycarpus fortunei)--the tallest 13 or 14 feet tall from ground to frond tip--and a good-sized dwarf windmill palm (Trachycarpus wagnerianus). There were also numerous Sabal minor and Rhapidophyllum hystrix (needle palm).

Here's the tallest windmill, towering over a clump of Musa basjoo:

Here's another view of the same specimen; for height reference, both of these gentlemen are over 6 feet tall!

Here's another windmill, with the waggie behind it to the right (this photo vividly shows the difference between regular windmills and waggies):

The third windmill was fruiting heavily:

A view of the yard, showing several well-established needle palms and Sabal minor:

And finally a view of the house, surrounded by palms:

More photos from the same location are in my photobucket album--see link.

Here is a link that might be useful: More photos