Spider mites on difficult foliage
I have a spider mite problem on:
- Iceplant ground cover
- Rosemary bush
- 30' Walnut tree
I have tried 25% alcohol/75% water solution on the iceplant and rosemary yesterday with a general "soak the plant" sprayer approach that seems to have done very little- today I see more webs (although many are gone- but still- something tells me in a week the entire area will be infested again). I suspect the mites are underneath the leaves and for these plants, I can't really spray there.
The tree is another matter. The tree also has powdery mildew along with the mites. For this I sprayed with bleach and water, and I tried to get the back of as many leaves as I could, it definitely made a difference for the leaves I could get to but what about the tops of high trees? I am planning to do a massive prune of the tree and apply Bayer tree and shrub because something else is wrong with the tree I fear.
But as for the mites- help! Thanks for any advice. This is Northern CA, a moderate climate.