Rhodo and Azalea beds

Rhododendrons, or "Rhodo's" are a great Deer resistant plants that grow well in our moderate climate and acid soil. They are from the Heath family so related to other acid lovers such as Heathers, and Blueberries. I am often asked what is the difference between Rhododendrons and Azaleas. Technically Azaleas are Rhododendrons but we usually refer to a decidous species, as well as some evergreen Oriental types as Azaleas. We most often refer to the large leathery leaf types as Rhododendrons.

Rhodos are healthiest in filtered sun, doing best not too shady or too sunny. Deep shade can produce leggy plants that don't bloom well. Hot sun and reflected heat are hard on rhodos too, as are cold winter winds. Rhodos need a well draining soil free from standing water and a good supply of water in hot and cold weather. If the fall is very dry give your Rhodos a good soak after the first frosts. They will handle winter winds much better if they are well hydrated. If you have extreme winds consider spraying them with an anti-dessicant .

Rhodos and Azaleas will thank you for providing not just good soil, but lots of additional organic materials such as compost, leaf mulch, or peat added at planting time. Prepare the beds to a depth of up to 18" for the biggest varieties. They are shallow rooted plants, so if you prepare your beds too deeply they may sink. They are sensitive to being planted too deep. They should be planted to their original soil levels, and benefit from being on a slight berm 2-3" above the surrounding areas. It's a great idea to mulch your beds with bark or leaf mulch. Fertilize in the Spring before and after blooming.

Young Rhodos and Azaleas can be pruned to form a compact plant. The light pruning should be done immediately after blooming. If you leave pruning too late you will cut off next years buds. Older Rhodos need very little pruning unless they are leggy. Prune back to where you can see a leaf node, or green leaves. Prune out dead or broken branches anytime.

When planting a rhodo bed pay special attention to the mature heights and widths the plants will be. Plot out your bed, starting at the back or middle and work large to small making your way toward the edges. Leave at least 18" from the edge of the bed. It is helpful to draw circles of the correct eventual diameter to fit the plants together.

Victoria has a Rhododendron Society if you interested in learning more here is their link.

Victoria Rhodo Society