But beware, cilantro is very sensitive to mildew, so be sure that you don’t over-water it. If you do spot some gray fuzzy stuff on your soil, scrape it off, uproot the infected part and stop watering for a few days. It’s a really fast grower, so harvest it daily by picking off leaves or whole sprigs. This is a great addition to salsas, summery soups and dressings.