Asked July 07, 2023, 12:32 PM EDT
First year I've grown hostess in pots - these in the photos are from the "mouse" series so are small hosts. Also most of the areas of concern are on the larger one but there are a few leaves affected on the small one so we know that it applies to both varieties.
Early in the season when these plants grew leaves the distinct pattern of spotting on the leaf edges showed up. It has since not been spreading to any degree I can detect although I haven't monitored it closely. They seem to be in ideal light situations, flowered beautifully and all signs are that they are otherwise healthy. They did remain outside all Winter in the same location. I might have fertilized early on with our compost drainage which has a dark very reddish brown color. Have no idea of course of the NPK, pH, micronutrients, etc of that. I probably diluted it some.
So...bacterial or under or imbalanced fertilizing or something else? Thank you!
Montgomery County Maryland