Downtoearthdigs
Answered on June 18, 2016
There can be several reasons for yellowing of leaves, the links below will help you pinpoint the cause and how to make corrections.
https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/yellow-dahlia-foliage.htmYellowing
https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/dahlia-pests-and-diseases.htm
https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/dahlia-care-grow-dahlia-plant.htm
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