What's the best paint for a fiberglass plant urn?

Spray paint for base color. Add antiquing

Spray paint! Prep work and patience is the key.

https://homeguides.sfgate.com/should-use-paint-outdoor-fiberglass-pots-96409.html

I scored 6 from one of my neighbors recently. Waiting for a non windy and no rain day to paint them.

rustoleum outdoor paint

chalk paint with sealer

Just use the left over wood paint!!

Paint yearly!

HANDS DOWN!! KRYLON FUSION! I have used this spray paint for years on many projects including concrete, plastic and fiberglass planters. It requires no primers, and doesn't peel or flake. Fantastic colors too that do not faded in the sun! I mince no words and have tried them all but I always come back to KRYLON FUSION. (Make sure it's Fusion as they make regular spray paints too).

Any car spray cans will do the job.There is a wide variety of coulors to choose from, also primers depending on the top coat ,you would use white primer for light coulors and grey for dark coulors .and also metalic finishes need a coat of laquer.

I use a marble spray paint and it lasted for years outside

I like the spray paint that looks like stone! Get it on Amazon. I have use this on outdoor pots for years. A good primer will help it last longer.

Definitely a outdoor paint maybe rustolium maybe a oil so it stays on good with the weather and heat .

I love Rustoleum hammered metal spray paints! I used it on porch lights, plastic planters and switchplates. The texture is fool proof and there are lots of dark and bright shades. The urns would look good in black but bronze and copper aresome of my favs. You can add a verdegris patina with a bit of acrylic.

I like it