Hello. I use agriculture sulfur on all my plant cuts, scrapes and toppings. You can get at most garden centers and at the pharmacy for people grade sulfur. It is antifungal so mold won't be a problem. It soaks up sap. A real plant healer. Don't get too much on the soil, but the plant uses sulfur to grow ( please google that) Hydrogen Peroxide diluted down to 1% will knock it out too. Plants look good. Chuck.