greenAFanswered grow question a day ago I wouldn't stress if it's just a few, but check for pests! And check your numbers if your in range just continue to monitor. Could be pests, stress, environmental, physical damage (mechanical, or from spraying, etc), u gotta rule things out, rarely as simple as what is this... I'd check for pests and my ranges and if nothing stand out it's fine. If no pests I'd rest easy and see no threat.