It depends, LOL. If you purchased five gallon potted plants at a nursery or garden center, you can begin a normal fertilizing regimen as soon as they finish blooming -- they are mature plants with an established root system. Choose a fertilizer formulated for roses (Rosetone is good and widely available) if you have several roses or use Osmocote if you just have a couple of roses so you can use it on other plants as well. Note: dogs eat Rosetone, use Osmocote if you have pups.

If you planted tiny baby bands or bareroots you would need to be cautious, that's why all the conflicting advice. Since your roses are already blooming, I don't think you have bands.

All of my roses were at least in 2 gallon containers when I planted, so based on what you are saying I can start fertilizing now.

I do have a dog and I have never heard that about Rosetone so once again, good to know.

Thanks so much for the response!