Posted: 28/03/2017 at 11:40
Our new house has an apple tree that last Autumn was ravaged by maggots. I've been slow to get the garden sorted out and, even though I put a grease band on it in the winter, it looks like Sept/Oct was the time to spray nematodes (would rather go organic).
Equally, looking at these winter tree washes, I think it's too late to use those now and, with flowers on the way, pyrethrin/organic spray doesn't sound a great idea for bees either.
So, although I've looked on the RHS website, I'm not clear on what options I've got now to treat the tree? I wonder why spraying nematodes now wouldn't work, but the instructions specifically only mark Sept/Oct as the time to apply them.
I know there are loads of threads on codling moth but couldn't find anything that addresses your options at this time of year... thank you!