How do I paint plastic planters?

Yes, they can! I use spray paint that is labeled for plastic.

Yes they can! Buy spray paint for plastic and I always use a primer spray paint first and let that dry/cure for about 48 hours when I paint plastic, I have things that have lasted years using this method.

Even if the paint says it is a paint and primer in one I use a primer first, but if you didn’t want to I would do a coat wait at least 36/48 hours before applying another coat. If you will be putting it outside after it’s dry I would wait until the next day. The longer you give paint to cure the better your project will turn out.

Hope this helps.

If they are outside make sure that the paint you use is made for plastics and can withstand outside temperature fluctuations.

I do it quite often. Clean well, scuff with fine steel wool and wipe with denatured alcohol. Spray paint with a paint formulated for plastic.

Sure can. Rustouleum 2X spray paint or Krylon Fusion spray paint.