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Hydrangea problem

LoupenLoupen Posts: 29
in Problem solving
I have had my hydrangea for about 7 years it started as a blue flower with black stems but gradually over the years it turned to pink but this year it seems to have yellow leaves and mis of greenish and pink flowers, I am thinking it’s some kind of deficiency in the soil, in spring I added a hydrangea colourant thinking this would be good for the plant but seems I was wrong, can anyone give me any advice in getting leaves back to all green. thank you in advance

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  • LoupenLoupen Posts: 29

  • FairygirlFairygirl Posts: 55,117
    Your soil isn't the right pH for it keep it's original colour. Blue ones need a more acidic soil.
    It's generally chlorotic looking too, which also suggests the soil isn't in great condition. Adding more organic matter on a regular basis will help that.
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • LoupenLoupen Posts: 29
    Yes I thought that’s why was pink because of the soil, not a problem being pink , just was worried now leaves don’t look right, I’ll try some organic matter like you suggest .Thanks fairy girl will 
  • luis_prluis_pr Posts: 123
    edited July 2021
    In my alkaline soil (pH 7.6), I regularly use organic matter and acidify with garden sulfur or aluminum sulfate. I use the a/s only on those hydrangeas whose blooms I want to turn a shade of purple or blue and garden sulfur on the rest.

    Chlorosis is a nutrient deficiency in which leaves turn light green (except for the leaf veins, which remain dark green). As the condition gets worse, the leaves will turn yellow (except for the leaf veins, which remain dark green). If the condition is allowed to get worse, the leaves will turn white (except for the leaf veins, which remain dark green) and eventually, the leaves die. You  can also use iron chelated liquid compounds sold at some garden centers; the liquid compounds fix the problem slightly faster than using granular pellets of sulfur/etc but both are still slow and take a while (a few weeks) to correct the problem. Try not to exceed the product directions much as the hydrangea roots are tiny and fibrous and can be harmed by using too much of sulfur-containing amendments.

    You will need to continue amending the soil per product directions forever, as your soil will revert back to its original soil pH if you stop amending the soil.

    Nice blooms, Loupen.

  • LoupenLoupen Posts: 29
    Thanks for the advice luis, I have just found an iron tonic online that I can mix with water, it says it’s for hydrangeas with chlorosis, I’ll give that a go also.Thanks again
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