Answer: I wish I could encourage you to plant under your pepper tree, but I'm afraid doing so would compromise the health of your tree. Pepper trees prefer dry soils and they don't like to share their space with other plants. The root systems will compete for moisture and nutrients and have a reputation for producing suckers from their roots when moisture is present under the canopy of the tree. So, anything you plant will need to be watered, which will cause problems for your tree and will encourage sucker growth. I'd just leave the area bare. If you want to spruce it up during the spring and summer months when you are outdoors, why not arrange some potted plants underneath your tree?
Best wishes with your garden.
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