We have an established Wisteria, approx 6 years old…. 4 main trunks of 1-2 inches diameter……all flowering lovely this spring ‘except one’ !……it seems completly dead ! flowers tried to bloom but failed, other 3 branches completly normal with lovely blooms, how can this be ?
I have looked for wisteria scale and brown scale = no trace……..
Should we saw off this trunk incase it spreads to other branches ?
What can we look for to rectify this problem ?
Thank you so much for any help
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