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Hi I have a well established garden with massive trees and something is killing them. The local shop has recommended Buxus Blight Buster spray but it wont be effective on a large garden. An arborist said cut the effected trees out. It is on so many varieties and killing them one branch at a time. Any other options out there??? 

Last edited: 06 October 2017 22:32:11

pansyface

HELLO, 

NEVER HAVING HEARD OF BUXUS BLIGHT BUSTER (QUITE HARD TO SAY THAT AFTER A GLASS OR TWO) I GOOGLED IT AND SEE THAT IT SELLS WELL IN NEW ZEALAND.

ARE YOU IN NEW ZEALAND?

MOST OF US HERE ARE IN NORTHER EUROPE.

NEVER MIND, THE THEORY IS THE SAME. TAKE A LOOK AT THE DIAGRAM HERE.

AS YOU CAN SEE, A PLANT BECOMES INFECTED BECAUSE IT SUFFERS SOME KIND OF DAMAGE (MAYBE MINOR) WHICH ALLOWS A FUNGUS TO ENTER ITS SYSTEM. THE FUNGUS THEN GROWS AND ITS SPORES ARE SPREAD TO OTHER PLANTS BY THE WEATHER.

IN OTHER WORDS, THE PRESENCE OF A FUNGUS INDIATES THAT A PLANT IS ALREADY WEAKENED AND USUALLY NO AMOUNT OF SPRAYING IS GOING TO DO MUCH GOOD. LOPPING OFF BRANCHES MIGHT HELP BUT ONLY IN THE SHORT TERM.

I DON'T RECOGNISE THE FUNGUS ON THE TREE, IT LOOKS LIKE CORAL SPOT, BUT IT IS WELL ESTABLISHED. I DOUBT THAT YOUR TREE IS LONG FOR THIS WORLD, SORRY.

Wow many MANY thanks for your indepth reply  Yes i live in Wanaka New Zealand. The sad thing is i am lopping the effected branches and spraying then disinfecting tools but is now all throughtout my 5 acre garden. Very sad for me and the nz specialist are just saying spray. But nothing they are giving me is working.  Very sad! 

pansyface

HERE IS MORE INFORMATION ABOUT CORAL SPOT FUNGUS.

https://en.m.wikipedia.org/wiki/Nectria_cinnabarina

IT MENTIONS THAT PLANTS BECOME SUSCEPTIBLE TO INFECTIONN WHEN THEY BECOME STRESSED BY DROUGHT, FOR EXAMPLE.

HAVE YOU HAD A VERY DRY SPELL OF WEATHER OVER THE LAST FEW MONTHS?

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