The name rhododendron comes from the ancient Greek rhódon "rose", and déndron "tree". These flamboyant show-stoppers bring swathes of color in spring and deep green foliage for the rest of the year. Make sure your rhododendron is well watered during the summer, especially the first year when the roots are working their way out of the original root ball and into the surrounding soil. Buy 3, get 1 free!

Espalier is the art of training a tree, shrub, or vine to grow on a flat plane. It's a European method that has been used for hundreds of years, especially for fruit trees. This technique creates a beautiful plant structure, and is efficient in saving space in a small area. Check out DIG's flavorful selection of bare-root apple and pear trees. Espaliered Pear & Apple Trees: 3 or more, 25%off

And finally, remember the Three Gardens and a Nursery Tour on Vashon on the 11 June. the next slideshow peek is online, so you can preview DIG Floral & Garden's current delights.

Tickets are on sale now and numbers are limited to this intimate view of Island Artists' Gardens.

Follow DIG on FaceBook, as we give you sneak peeks of what’s in store on the tour.