Western azalea - Ask Extension
Hello, should I plant my western azalea now or wait until the Fall? It is in a pot. Where is the optimal place to plant it? How much space does it nee...
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Western azalea #930485
Asked May 03, 2026, 10:38 PM EDT
Hello, should I plant my western azalea now or wait until the Fall? It is in a pot. Where is the optimal place to plant it? How much space does it need? I have these 2 spaces: under the shade of oak tree along chain link fence because I heard they like shade or along the house under the shade of roof, I would have to move the Oregon Grape, the other plants adjacent are evergreen huckleberry plants. Will the spacing be ok?
Washington County Oregon
Expert Response
Western azalea (Rhododendron occidentale) will grow big over time. The Oregon State Landscape Plants page I linked lists to 10 feet and photos on that page include an example of a large one. “It prefers partial shade and well-drained, acidic soils high in organic matter.” This is a quote about growing conditions on this Oregon Flora page.
I can’t tell you based on photos where to plant it in your landscape, but these websites give the basics so you can choose. Most often, planting shrubs now and watering to establish them in summer is better than keeping them in a nursery pot. Few of us get the fertilizer, watering, and temperature correct for holding shrubs in containers for months, but it is possible.
The publication EC 1438 includes updated information about how to plant shrubs and trees. The planting hole needs to be wide, not too deep, and use only native soil to refill the hole. Mulch on top will help hold moisture.
The plants along your house are too close to the foundation, so consider moving them. They are under the eves, which can mean you need to water them in wintertime. Also, they will get large enough to touch the building, meaning possible insect and moisture problems. Currently homeowners are also considering fire danger if shrubs are too close to wood siding. The page for evergreen huckleberry lists it as 3-5 feet, even 8 feet with time. This means planting it a minimum of 6 feet away from the house might be a good idea.
OSU offers a few publications about using native plants in landscapes, here are some. With our very dry summers, watering is generally required, but natives can help reduce the amounts needed.
I can’t tell you based on photos where to plant it in your landscape, but these websites give the basics so you can choose. Most often, planting shrubs now and watering to establish them in summer is better than keeping them in a nursery pot. Few of us get the fertilizer, watering, and temperature correct for holding shrubs in containers for months, but it is possible.
The publication EC 1438 includes updated information about how to plant shrubs and trees. The planting hole needs to be wide, not too deep, and use only native soil to refill the hole. Mulch on top will help hold moisture.
The plants along your house are too close to the foundation, so consider moving them. They are under the eves, which can mean you need to water them in wintertime. Also, they will get large enough to touch the building, meaning possible insect and moisture problems. Currently homeowners are also considering fire danger if shrubs are too close to wood siding. The page for evergreen huckleberry lists it as 3-5 feet, even 8 feet with time. This means planting it a minimum of 6 feet away from the house might be a good idea.
OSU offers a few publications about using native plants in landscapes, here are some. With our very dry summers, watering is generally required, but natives can help reduce the amounts needed.
