Sometimes people come up with questions that we can’t answer. Maybe you have an answer for Rich?
Hi. I’ve been exploring your blog and web site. Very informative. I’ve been volunteering at SD’s Balboa Park Desert Garden. As a public park, it gets damaged at times. There are large plants where people have etched their names on the cactus arms. Names appear brown against the cactus’ green. Do you know of a product I could purchase to paint over the names and restore some of the green to the damaged part of the plant?
I don’t know of any product that will do what you want. I’ve seen people use a green sharpie, but it usually ends up looking worse. If you invent a product, let us know and we’ll carry it.