I would like to find a web-site to purchase rare breeds of trees and
shrubs. The site should be able to ship its products to Western
Europe.

<Bluebell Nursery is a grower of rare trees and shrubs. It is located
in the UK and ships to the UK and the European Union.>
<http://www.bluebellnursery.co.uk/>

<Search strategy:>

<"rare trees" nursery>
<://www.google.com/search?q=%22rare+trees%22+nursery&hl=en&lr=&ie=UTF-8>

<Hope this helps.>