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Help Ericaceous fed put on cornus

Last week i filled my 10 litre water can with what I thought was my comfrey feed about 1 litre but turns out my hubby has put ericaceous feed in similar bottles. I watered a newly planted cornus korus and I think it’s killing it as all the flowers have gone brown and leaves are drying up. It was beautifully healthy before this accident. Advice plse as cost a fortune and want to try and rescue thanks 




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A newly planted cornus at that size needs huge amounts of water, especially at this time of year, unless you live in an area of regular, persistent rainfall. Even then, a bucket of water every other day, would be needed.
It will shed foliage quite often until properly established. The grass nearby is a lot of competition for water too.
I live in west central Scotland - not where that photo is...
Much more likely to be shortage of water.
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
It's far too close to that wall which will suck up moisture and it's also got all that grass competing. I suggest you give it a seriously good drink of at least 10 litres. While that soaks in clear a metre square of grass from the soil and then dig up and re-plant the cornus 2' out from the wall. Water it well and keep the grass cleared and give it a full bucket of water two or three or even four times a week in hot weather, one or two in normal temps.
thanks re 2' sorry is that 2 foot? Great advice and thank you as cost . Minded to go back to the garden centre. It was looking beautiful only last week