I'm looking to plant a new tree in my garden and wonder if there's anyone out there in JWD land who can give me some advice. The area is pretty sunny and quite sheltered although we do have strong winds around here in the winter. It also sometimes freezes.
There is a rich deep top soil and a clay substrate. Ideally the tree should be quite fast growing but will not exceed 30 feet. I don't want to plant conifers if I can help it. Any ideas?
As has been sugested, a Sorbus species (Rowan, Mountain-Ash, Wychwood) is an ok choice. There are numerous varieties with different berry and bark colors to choose from.
Also, there are numerous Magnolia species and cultivars in numerous colors that would fit the bill- Star Magnolia, Sweetbay Magnolia, Soulange Magnolia, and others too numerous to list here.
Golden-Chain tree (Laburnum species) would also make a nice choice. Their wisteria like, yellow blooms are spectacular, and green bark adds winter interest.
Another unusual tree that would fit would be Dove Tree (Davidia involucrata)
Styrax species (Snowbell) are another unusual ornamental tree.
There are also many Prunus species (Cherries, Plums, Apricots, etc) of an ornamental nature that would fit your description.
Pyrus species (Pears) could also fit the bill.
Japanese Maples would almost fit the bill, except that they are slow growing.
If I were you, I'd check out a few sites that provide pictures, descriptions, climate, etc, to help you find what you are looking for.
Although US based, this nursery gives a lot of detail on the plants they offer:
http://www.forestfarm.com/search/gallery.asp
You can probably find a similar nursery across the pond.
That should keep you busy for a while.
Enjoy!
BA- Arboriculture is a hobby of mine.