My hydrangeas have been yellowing for a couple of years. Up until now I‘ve treated them with an iron supplement. Note – Yellow leaves are a very different issue than ASTER YELLOWS.
After doing some research, I’m ready to work on some probable causes:
– lower the pH
– correct a drainage problem
– As always, I should be doing a soil test before doing anything else!
Here are three excellent articles on identifying and dealing with chlorosis:
Missouri Botanical Garden – Iron Chlorosis
Utah State University – what is Iron Chlorosis and What Causes it?
Government of Canada Agriculture – Iron Chlorosis
Hydrangea with yellowing leaves and green veins. Very typical of chlorosis.
Asiatic lilies in same bed are now showing symptoms
A product I’ve been using to treat symptoms
About The Author: Armstrong
As a blogger, author, and editor, Linda directs her life-long love of nature and plants towards concerns about our environment and how we can do better. After much training and gardening experience, Linda continues to focus on learning and dispelling myths. Active volunteer roles currently include London Fanshawe Horticultural Society, London Middlesex Master Gardeners, Habitat for Humanity, and PAWS.
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