White Blotches on Nasturtium Leaves - Knowledgebase Question

Syracuse, NY
Avatar for mmglick
Question by mmglick
July 20, 1998
My nasturtiums--planted several weeks ago from seed--are several inches high and most of the plants appear healthy except for several that have largish (1-1 1/2")white or cream color blotches on the leaves (almost resembling bleach marks). Any ideas what is causing this and, if it's something I should be concerned about, how I remedy it?

Answer from NGA
July 20, 1998
There are a couple of reasons I can think of that would cause this. One possibility, especially since they are growing well, is that you planted a variegated nasturtium variety; these are currently quite popular and the blotches match that description pretty well. Another is that they are suffering from being exposed to too much intense sunlight too quickly. This would happen if they were started indoors and then set outside into full sun suddenly without any acclimatization period. The only other reason I can think of is accidental fertilizer damage, which would happen if you used a foliar feed which was mixed too strong or was applied to plants under high temperatures and in full sun. Unfortunately, without knowing the cause, it's a little hard to tell you specifically if it is a problem or not. I hope it's possibility number one!

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