Ask a Question forum: Yellow leaves on hydrangea need help please.

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Name: Christina Wall
Northern Cal. (Zone 8a)
Failures the easy way out, press on
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Wallflower
May 26, 2018 10:17 AM CST
Not sure why some of the leaves are turning yellow here are a couple pictures can anyone suggest ideas to help.
Thumb of 2018-05-26/Wallflower/6cdb1c


Thumb of 2018-05-26/Wallflower/fed3a9


Thumb of 2018-05-26/Wallflower/746c96

Blessings to you!
Name: Philip Becker
Fresno California (Zone 8a)
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Philipwonel
May 27, 2018 7:29 AM CST
Looks fine to me. It's probably just losing older leaves.
You could give it a feeding of Epsom salts, as per directions on bag. Epsom salt is not a salt per-say. It won't hurt the soil.
๐Ÿ˜Ž๐Ÿ˜Ž๐Ÿ˜Ž
Anything i say, could be misrepresented, or wrong.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
May 27, 2018 7:41 AM CST
Philipwonel said:Looks fine to me. It's probably just losing older leaves.
You could give it a feeding of Epsom salts, as per directions on bag. Epsom salt is not a salt per-say. It won't hurt the soil.
๐Ÿ˜Ž๐Ÿ˜Ž๐Ÿ˜Ž


Sorry, Philip, but Epsom salts (magnesium sulfate) actually are a salt per se.

If the problem was magnesium deficiency the veins on the leaves would still be green while the rest of the leaf was paler. That does not appear to be the case on this plant. If it is a nutrient deficiency, since it is all over including the veins, and on the older leaves, it more likely would be nitrogen. But it could also be lack of water and various other things.

Has the plant been fertilized at all?

Name: Christina Wall
Northern Cal. (Zone 8a)
Failures the easy way out, press on
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Wallflower
May 27, 2018 3:34 PM CST
I will fertilize it sooner I'm not sure.
Blessings to you!
Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
May 28, 2018 2:54 PM CST
Sorry Sue. After getting hammered many times, for telling people to try epsom salts, which by the way I've been told to do over 40 years !!!
I researched it a couple years ago.

It seams the pro-epsom salt people don't want to argue with the nay-sayers.

The epsom salts, releases certain unavailable elements to the plant.
Or ? Did you read that far ???

Ta. Ta.
๐Ÿ˜Ž๐Ÿ˜Ž๐Ÿ˜Ž
Anything i say, could be misrepresented, or wrong.
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
May 28, 2018 3:10 PM CST
Philip, this "unavailable element" is magnesium - because Epsom salts is magnesium sulfate, a salt. I'll quote "Magnesium sulfate is an inorganic salt with the formula MgSO4(H2O)x where 0โ‰คxโ‰ค7. It is often encountered as the heptahydrate sulfate mineral epsomite (MgSO4ยท7H2O), commonly called Epsom salt. ". From: https://en.wikipedia.org/wiki/...

It can be appropriate to use Epsom salts. It can also be inappropriate to use Epsom salts. There is no one size fits all. Just because it works for you does not mean it won't cause a problem for someone else. The symptoms on the hydrangea do not suggest magnesium deficiency.

Yes I did read that far but I don't think you've read any of the references I've given you or you would understand why it's wrong to suggest applying magnesium unless it is actually needed. It occurs naturally in soil, you only need it if there isn't enough in the soil.

Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
May 28, 2018 3:30 PM CST
We'll just agree ! To disagree !
Anything i say, could be misrepresented, or wrong.
Name: Christina Wall
Northern Cal. (Zone 8a)
Failures the easy way out, press on
Image
Wallflower
May 28, 2018 7:08 PM CST
Thanks everyone
Blessings to you!

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