The best thing about planting azalea seeds is that this process can essentially be done at any time of the year, even if they are already in bloom. However, for optimal results, plant azalea seeds in the early months of fall or early spring, giving them the opportunity to adjust before harsh winter or summer weather take their toll. Moreover, this is where location selection plays an important role in the success of your azalea bushes, as exposure to sustained winds will likely harm or destroy your plant. You should also plant azalea seeds out of the path of direct sunlight for optimal growth.
If you plan to plant azalea seeds indoors, then do so during the winter months. You can then transplant the seeds into the garden during the spring. It is important to wait until the final frost is over before transplanting your azalea seeds, as the cold air can kill the plant. So wait until spring is well underway and there is no chance of a last bout of winter conditions before moving the seeds to your outdoor garden.
Upon transplanting the azalea seeds, you can allow them to flourish without much interference on your part. Although nature might take some of the weaker bushes, the others should bloom beautifully and on cue each spring for many years to come.
If you are planting azalea seeds in a greenhouse, then you are not limited to a certain time of the year. As long as you have a heated propagation bed and a misting system, you can grow your seeds comfortably in your greenhouse until they are ready to be sold or moved to an outdoor area. However, transporting them at the right time of year is still a factor, as you should never take them outdoors if the temperature is consistently below 70 degrees F.