As soon as the flowers start to look like they’re dying (browning, wilting petals), they can be snipped off! Unless, of course, you want the plant to produce seed, in which case you would want to let the flowers mature fully before cutting them down.
As soon as the flowers start to look like they’re dying (browning, wilting petals), they can be snipped off! Unless, of course, you want the plant to produce seed, in which case you would want to let the flowers mature fully before cutting them down.