Answer: The best way to rid your plants of outdoor pests is to hose them off with a strong stream of water. That should rinse off any insect eggs, as well as any creepy crawlies hiding in the plant. You didn't identify the plants so I can't tell you what exposure would be best, or how much water they will need. If you send another question through this forum identifying the plants, we'll give you specifics about each one. If the leaves of the plant are naturally glossy, simply wipe them down every few weeks with a soft cloth dipped in clean water. If the leaves are not naturally glossy, you won't be able to make them glossy. I'd refrain from using any of the leaf polishing compounds on the market - they can clog the natural openings in the leaves which will cause premature death of the leaves.
Best wishes with your plants!
Q&A Library Searching Tips