The leaves of my Jade plant has brown dots. It is a very old plant I picked from the road so I don't know for how long the plant had this problem. Even tiny new leaves that grow have the dots on them. Has anyone any idea of what could have caused the brown spots and what to do.

Hi
First id say make sure that the plant is isolated from any others and check it for mites if the plant is pest free remove a leaf and place it in a plastic sandwich bag and leave it in a low lite place for a few days. This will tell you what type if any of fungus the plant has and will allow you to deside on a treatment. Second make sure that the potting mix drys in between watering's and that the plant itself remains dry at night if its in a cool spot.