Zach Simmons

Trichogramma wasps
https://www.buglogical.com/trichogramma/
Feed them codling moths.

Magnesium chloride brine (magnesium oil). It's available as a roll on or spray or you can mix crystals with water to make your own. I started using it 4 years ago and never went back, and got positive feedback that I was essentially odor-free. Overapplication can cause some short-term irritation, but you adjust or scale back, and your golden. It requires very little and it lasts a long time. One ingredient, no fuss.

Understory*

Thanks for the heavy shade idea. I also read it does poorly in shade. My house faces southwest, and the tree sits slightly southeast of me, so I can't effectively plant anything to shade it on my own property..

I might look into invasive species regulation, but personally don't like the idea of going to the state to flex it's muscles against my neighbor.

I like the idea of planting other allopathic species.  Curious if anyone has any observations on trees that resist it's encroach, or push it out? I'll research this.

I was also thinking I could let my wisteria vine loose on it and maybe that would shade enough to choke it out.. though probably not, and doesn't address the suckered and seedlings. Maybe I'll need to move to mostly understood plantings and add trees to shade my garden so they at least don't take off there.

So some interesting things I found when researching use of the Cynthia Moth for control:

They say almost exclusively Ailanthus, but...
http://tpittaway.tripod.com/silk/s_cyn.htm
Larvae have also been found on Forsythia, ashes (Fraxinus), common walnut (Juglans regia), golden rain (Laburnum anagyroides), sweet bay (Laurus nobilis), privets (Ligustrum), Magnolia, Prunus, castor-oil plant (Ricinus), elders (Sambucus), whitebeams (Sorbus), lilacs (Syringa) and many other deciduous trees and shrubs.
https://bugguide.net/node/view/328125
"Food: Many trees and shrubs, including ailanthus (tree of heaven, paradise tree), birch, ash, elm, alder, wild cherry, maple, lilac, willow, and apple"

I have labernum, lilac, sambucas, prunus and apple among my plantings.. so I'm on the fence about it now, though one of the sites above also says " females are very attached to the tree or thicket of saplings where they emerged. Most eggs will be laid within this location". It sounds likely to me that they pick other plants if the preferred host isn't around (no problem there, for now).

I plan to release tiny parasitic wasps to protect my apple and pear trees from codling moths so maybe it won't be the end of my apple trees. I guess they could attack any silkworm eggs laid on the apple trees too, but I don't know if their range is far to reach the pest tree (thereby reducing the effect of desired infestation), or if they'd basically just protect the trees where they hatch. Gotta research that.

Another thought I had was maybe I can put some funds spawn on the end of a blow gun dart and send a few into the trees on his side.. he'd never know

My neighbor has a very large canopy tree which shades my home some, and dropped seeds all over. I have to pull up seedlings constantly and I just can't ever get them all. I noticed that they smell bad. After searching invasive plant lists for my area (central Utah) I finally figured out they are "Tree of Heaven" Ailanthus altissima. I really want them gone, but couldnt figure out a strategy until i figures out the type of tree. Rather than pulling them up the rest of my life, I read up a little in  other threads, where there were suggestions for a) planting competitive plants which resist it's alleopathic nature [thankfully, this hasn't seemed to affect my garden on my side of the fence] b) innoculating with fungus (oyster and lion's mane) and c) introducing silk moths which feed on the plant.

I'm wondering if anyone has had success with these approaches, longer-term? I'm curious if there is some way I can target the seed samaras, or maybe covertly change the growing conditions (flood my neighbors yard, etc.) to stunt it's growth. It's obviously old (probably from the 70s when my house was built), and I read they don't live very long anyway, but I'd like a way to suppress seeding and seedling growth. It sucks because my neighbor let's it go, so he's got 20 smaller versions all below this thing on his side, and some grow through the fence and break it.. when this thing dies, I just hope it doesn't fall on my house. I thought that maybe heavy mulching and planting I could out-compete the seedlings but they don't seem to care much.

Thanks

I don't know how to use the forum yet.. I have read from it but not posted before. Yes I'd like whatever stuff comes with $1 donation. I didn't know I needed permies account to get goodies thank you

HI I haven't gotten any emails for the candy $1 donation please send links to my email.

Thanks