you can pin it perfectly, it just depends on the type of mend you are doing. we're glad to be a tiny part of it. we laughed when we saw weeds growing from our gutter. dig a circle around the barrel cactus about 6 inches from the edge of the plant, pushing straight down into the soil to preserve as much of the root as possible. fortunately, inviting people has become very convenient due to social media. i had a hard time getting into it. i actually don`t know were people got that idea in the first place. i'm not on your level of knowledge? 