Robertesq1
ArboristSite Operative
Second year in a row killing all my crab apples does anyone know what this is???
Crab apple Scourge.. Need help from the pros...
- Thread starter Robertesq1
- Start date
Help Support Arborist Forum:
ct greenman
ArboristSite Guru
It's cedar apple rust
Probably cedar-apple rust. (Maybe cedar-quince rust or cedar-hawthorn rust)
Edit to add: Guess I'm just a little too slow to the punch!
Edit to add: Guess I'm just a little too slow to the punch!
Last edited:
Robertesq1
ArboristSite Operative
It's not on the leaves and it is not flat its like little growths rising out of the apples...
ct greenman
ArboristSite Guru
It is on the leaves I see it in the pic. The growths on the apples are the cedar apple rust also. The rust color stain on the leaf is another sign.
Robertesq1
ArboristSite Operative
dang.... I think your right. Second year in a row not a single crab made it:censored:
ct greenman
ArboristSite Guru
Spray with fungicide at bud break and most fungicides will require a second and third treatment every 15 days or so. That should help.
dingeryote
Blueberry Baron
Yech!!!!
The fungus overwinters in the infected fruit and debris on the orchard floor.
Consider a systemic fungicide now to reduce the damage this year and the amount of spores that are gonna fly next spring.
Good old Indar is hard to beat as a GP systemic, but it ain't cheap. Check with your local state Ag extension, as there might be an alternative.
Haul all of your prunings out of the area and burn them, and till the ground in the orchard this fall and early spring before bud break.
Ya also might want to do a little scouting nearby.
Possibly a tree or two that have gone Feral, or an abandoned orchard possibly?
It's been a long time since I farted around with apples, but even back then it seemed like everything on the planet wanted to infect, eat, or destroy them, and the spraying never stops LOL!!
Stay safe!
Dingeryote
The fungus overwinters in the infected fruit and debris on the orchard floor.
Consider a systemic fungicide now to reduce the damage this year and the amount of spores that are gonna fly next spring.
Good old Indar is hard to beat as a GP systemic, but it ain't cheap. Check with your local state Ag extension, as there might be an alternative.
Haul all of your prunings out of the area and burn them, and till the ground in the orchard this fall and early spring before bud break.
Ya also might want to do a little scouting nearby.
Possibly a tree or two that have gone Feral, or an abandoned orchard possibly?
It's been a long time since I farted around with apples, but even back then it seemed like everything on the planet wanted to infect, eat, or destroy them, and the spraying never stops LOL!!
Stay safe!
Dingeryote
Urban Forester
ArboristSite Guru
You may also want to take a shot at finding the alternate, an infected cedar or juniper within 1/4 mile of your tree. it will have orange 1 to 2" long stem cankers slighly before the rust begins to show in your crabapple. Removal of the alternate will go a long way in reducing the infectious inoculum. If its only one cedar, and its owner will let you remove it...
ct greenman
ArboristSite Guru
Yes that is true treating the cedar and juniper on your property with fungicide may also help. Spores can travel long distances though.
Similar threads
