Wires_Guy_wires
Imperial Masterpiece
I own two collected junipers of substantial size and age.
They came with rust. And since rust needs an intermediate host to spread, I'm not worried at all.
Usually the rust bursts open a few branches every year, I cut those off and the presence has been decreasing every year. However, it's also present in small amounts on the trunk. The trunk I don't want to cut into. Since I've been playing with these junipers for 4 years now, I wanted a solution to just locally kill infections.
This year I ran some trials on six spots with three treatments: roseclear ultra (undiluted), bordeaux mix (copper sulphate and limesulphur) and DMSO.
Roseclear didn't do jack. The fungus kept on growing and fruiting.
Bordeaux mix halted growth, killed the outer layer of the fungus, and it grew straight through a week later.
DMSO immediately spread itself out like a drop of soap in an oily frying pan, penetrated through the bark with ease and straight up murdered the fruiting body and all fungal tissue below in a minute. A day later the rust is shrivelled and crusty. I am still waiting to see if the foliage will be affected so don't get ahead of yourselves just yet.
Don't spray your trees with DMSO. Just, don't. Please don't. But if you ever want to kill individual spots of rust, dip a (preferably wooden, it'll hurt some plastics) q-tip in 100% DMSO and touch the rust with the wetted cotton. Now the rust is dead. One treatment, no antibiotics, no spills, cheap and effective.
They came with rust. And since rust needs an intermediate host to spread, I'm not worried at all.
Usually the rust bursts open a few branches every year, I cut those off and the presence has been decreasing every year. However, it's also present in small amounts on the trunk. The trunk I don't want to cut into. Since I've been playing with these junipers for 4 years now, I wanted a solution to just locally kill infections.
This year I ran some trials on six spots with three treatments: roseclear ultra (undiluted), bordeaux mix (copper sulphate and limesulphur) and DMSO.
Roseclear didn't do jack. The fungus kept on growing and fruiting.
Bordeaux mix halted growth, killed the outer layer of the fungus, and it grew straight through a week later.
DMSO immediately spread itself out like a drop of soap in an oily frying pan, penetrated through the bark with ease and straight up murdered the fruiting body and all fungal tissue below in a minute. A day later the rust is shrivelled and crusty. I am still waiting to see if the foliage will be affected so don't get ahead of yourselves just yet.
Don't spray your trees with DMSO. Just, don't. Please don't. But if you ever want to kill individual spots of rust, dip a (preferably wooden, it'll hurt some plastics) q-tip in 100% DMSO and touch the rust with the wetted cotton. Now the rust is dead. One treatment, no antibiotics, no spills, cheap and effective.