This is my favorite plant to have in the house: Aloe Vera. It serves a dual purpose as a houseplant and it assists in healing minor burns.
You just cut or snap off a leave and squeeze out the interior liquid onto the minor burn, covering the wound is not necessary. The remaining part of the leave can be stored in the refrigerator for up to one week.
NOTE: Do not apply to broken skin or raised blistering burns. Do not apply to a fresh sunburn until after the skin has cooled down and is not hot to the touch. (This can be up to two days later in some cases).
Aloe Vera does love warm weather and direct sun. Water lightly as it holds water in its leaves. Very drought tolerant plant.
For more great tips, check out my Patch directory listing at Kathy's 2nd Chance Plants, LLC.