Yes if you want yellow you will have to buy a deciduous one. You can plant a suitable companion with it like Evergreen Huckleberry to make up for the fact that it does not have the comparative density and small evergreen leaves of an Evergreen Azalea. All of these want the same cool organic soils that drain well.

I am a HUGE fan of deciduous Azaleas. In fact last year I started collecting them focusing on species native to N. America. Embothrium is right about yellow Azaleas. There are no yellow evergreen Azaleas, that color just does not appear in this group of plants. There are few orange ones but they all go towards red, not yellow. So your yellow Azalea will have to be deciduous and boy, are there some fabulous yellows out there!

I use this link for all my Rhododendron/Azalea searches:

https://www.rhododendron.org/index.htm

You can search by color, size, evergreen/deciduous, hybridizer, bloom time, hardiness and such.

Thanks enith. Good advice on the companion plant. I'm mostly limited by what the Nursery has. I'm trying to time them too. Something flowering in April, then May, then June. Hoping for some overlap to get plenty of bang.

I have never escaped summer mildew on Deciduous Azaleas in Portland, maybe it is just me...some do smell fabulous.

Mike's photo appears to show a Mollis Hybrid, I find these skunky smelling. Foliage mildew of genetically susceptible plants is prevalent during Pacific Coast summers because the combination of dried out soil with evening dews or fogs we tend to have is perfect for it. Incidence of it can be reduced by keeping root zones well watered and hosing plants off during summer mornings.

I have a beautiful yellow one from previous owners so can't identify but the scent is phenomenal. Almost like a jasmine.

I really like that natural shape, Mike. Do you prune that way? I much prefer the natural shape to the tight balls .

I don't prune these types of Azaleas unless they're getting in the way of a path. Sometimes it's better to move the path. ;-) My paths are woodchips so it's easy to do.

Here's that yellow one I mentioned in the post above. It's scent has been known to make ladies swoon. :-) Looks like I will be moving the path soon.

This one below was the most unusual one from seed that sprouted.

I'm ducking out of the rain again. We sure have had a lot this year.

Here's a couple more of those seedling azaleas. I have one that consistantly gets mildew. It's under cover of a cypress and dryer than the others. Move time!

Not a current picture. 5-21 last year. Looking SW. Tall trees to the south.

They look amazing, Mike. I did end up planting 1 deciduous and 2 evergreen. The 2 evergreens a little too showy and formal for my taste but they will grow on me. I have a little woodland area that I'm working on and planted a "native" azalea there which I'm excited to se in bloom.

I prefer informality over formal by a long shot. The formal look makes the plants appear to be made in a factory. Lined up or a matched pair, even more so. Foarmailty in landscape design is vulnerable too. What if one dies or looks bad? Then what do you do....especially after a few years of growth?