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About the end of July, some of my Hostas start turning yellow and eventually almost white. These get more sun that the rest. Is that the problem or do they need more fertilizer at some point.
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It sounds like your hostas are getting a little more sun than they would like. Adding fertilizer will not help the plant if it is already stressed by too much sun. You can help control the yellowing and fading by adding a thick layer of mulch around each plant that will help them retain water. Thick leaved and fragrant hostas usually perform better in sunnier locations. I have included a list of some varieties of hostas that are more sun tolerant.
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