Fill your tray with 2-3 inches of pebbles. Spread the pebbles out to make the surface flat and level.
Pour water into the tray, leaving about a half-inch of dry pebbles at the surface. Your plant is going to sit on this dry layer of pebbles—you don't want the water to reach the drainage hole of the pot.
Place your potted plant in the center of the pebble tray.
Return your plant and its new pebble tray to its usual spot in your home.
Add water to your pebble tray as needed. You'll need to add water more frequently in super-hot weather, or if your heating or A/C are blasting.Be sure to rinse your pebbles and replace the water in your new pebble tray every couple of weeks to avoid attracting insects. This will also flush out any fertilizer residue in the tray.
How to Make a Pebble Tray for Plants https://leafylittlehome.com/pebble-tray-for-plants/ January 22, 2021