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Yellow leaves on Hydrangeas
historyman
Posts: 141
I have been growing Hydrangeas for many years and for the first time I have two plants, which are 4 years old, that have developed yellow leaves. The plants are growing well and flowering. I would welcome any suggestion on how I should treat this.
Many thanks
Many thanks
0
Posts
Also - how are you growing them and what type are they?
I live in west central Scotland - not where that photo is...
Thanks for any help
Help!!
I think that's suffering from lack of nutrition. It seems to be in a pot, and that's always more difficult because the shrub can't access nutrients the way it would in the ground. That's why anything potted, especially long term, needs a lot more attention, with the soil mix being refreshed/replaced each year to give it a boost, and suitable food being used.
Compost alone is also no use long term for shrubs/trees - it needs to be a soil based medium to save adding too much extra fertiliser/food, and that also makes it easier to keep them happy.
I live in west central Scotland - not where that photo is...
Specifically it's showing a lack of Nitrogen (interveinal chlorosis).
It may just need a feed with a general purpose plant food - ordinary soluble Miracle Gro has good levels of nitrogen or even better a dose of sequestrene oe seaweed extract should do the job as it will also provide magnesium and manganese.
The other reasons it may be lacking nitrogen is that the compost is either too wet or too dry for it to be able to access the nitrogen.
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
Yes - the right food for the problem - so not tomato food for example which is more suited for flowers. Something for the foliage, and check the conditions of the mix in the pot. It may need moved into a bigger one too, depending on what the root system looks like - it could be full of roots and not much else.
I live in west central Scotland - not where that photo is...
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.