Avatar for Blemire1
May 7, 2020 12:59 PM CST
Massachusetts
I recently planted three oakleaf hydrangeas, watered daily for a week per instructions then we got a bunch of rain. Now the veins of the leavesvare green but the leaf themselves are turning a yellow green. Is this from over watering? I also read about an iron deficiency. Plants have been in for about 3 weeks now. Either way, what is the best way to correct?
Thank you!
Avatar for luis_pr
May 7, 2020 2:11 PM CST
Name: Luis
Hurst, TX, U.S.A. (Zone 8a)
Azaleas Salvias Roses Plumerias Region: New Hampshire Hydrangeas
Hibiscus Region: Georgia Region: Florida Dog Lover Region: Texas
Can you please post a few pictures? Thanks in advance, Luis
Avatar for Blemire1
May 8, 2020 8:27 AM CST
Massachusetts
Thumb of 2020-05-08/Blemire1/1e19d9
Avatar for luis_pr
May 8, 2020 10:31 AM CST
Name: Luis
Hurst, TX, U.S.A. (Zone 8a)
Azaleas Salvias Roses Plumerias Region: New Hampshire Hydrangeas
Hibiscus Region: Georgia Region: Florida Dog Lover Region: Texas
I would do nothing and keep an eye on the for further developments.

It is possible that yes, they got too much water and, if the water did not drain quickly, they started having difficulty absorbing minerals. They may darken later but very very slowly.

The leaves are also what I called greenhouse developed leaves and they get limited sun. So when you bring the plants outside and plant them, on year 1, they may have issues with too much sunlight even in morning sun only conditions. Some people transition them slowly from the conditions at the plant nursery into the garden and maybe that might help although I admit not having done that.

Watering daily is too much. Water the soil (not the leaves) only when a finger inserted into the ground to a depth of 4" feels dry or almost dry. Aim to provide soil that is as evenly moist as possible. Inconsistent watering (that is... they get water, the soil dries too much, they get water, the soil dries too much, etc) would not be good either.

If the leaves are getting sunscald, the leaves in direct contact with the sun would turn completely yellow (including the leaf veins) but the other leaves underneath would remain dark green.

It is possible to have similar symptoms from mineral deficiencies but since you bought them recently, I would expect that not to be the case. Plant nurseries tend to over fertilize instead. Ha!

PS - oakleaf hydrangeas do not tolerate soggy soil and will develop root rot quickly if the soil is kept soggy for too long...
Last edited by luis_pr May 8, 2020 11:03 AM Icon for preview
Avatar for Blemire1
May 8, 2020 10:48 AM CST
Massachusetts
Thank you for your time and response. I will keep a close eye on them!
Avatar for luis_pr
May 8, 2020 11:04 AM CST
Name: Luis
Hurst, TX, U.S.A. (Zone 8a)
Azaleas Salvias Roses Plumerias Region: New Hampshire Hydrangeas
Hibiscus Region: Georgia Region: Florida Dog Lover Region: Texas
PS - oakleaf hydrangeas do not tolerate soggy soil and will develop root rot quickly if the soil is kept soggy for too long...
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