When would it be okay to plant azaleas (scarlet, remembrance) outside, when they still have flowers on them or wait until the flowers die off?
Your blooming remembrance azaleas are most likely greenhouse grown plants that would not tolerate temperatues outside until after danger of frost - they have been in carefully controlled conditions and never exposed to outdoor life.
Are you about a Z6 there? These may well not be fully winter hardy in your zone...
Here is a link that might be useful: Azalea.org - Plant my florists azalea outdoors