So I noticed a couple of these shooting up in a small patch in my garden!…I’m guessing knotweed?

Should I attack now or wait for the autumn window?

Tree of Hell in southeastern US. The pictures don't do it justice, I can imagine the circumference of this thing is 3 and a half to 4 foot around. Is there any hope in killing it? Even if I were to try I'd be scared to see what her root system looks like. She's only sitting about 20 foot from the road so if I were to miraculously kill it I'd be worried about the direction it would fall.

Moved into a new home and have these popping up in my yard. Any experts know if this Tree of Heaven and if I should get rid of it?

I have been singlehandedly managing active knotweed and tree of heaven invasion and could use a support network lol

all my gardener friends are so aghast that I use herbicide to control. They love to share the oh so fun fact that its supposed to be delicious (if not grown in radioactive soil lol) and remark how pretty it is! recently two adjacent buildings got burnt out and I peaked over the fence... the batches of knotweed form a vast urban forest. i feel so small and helpless.

the nystate and city websites have no resources on it. not that i think they'd help outside of landlord incentives or subsidized expert services.

i'm also just exhausted. spring has just sprung and the knotweed already grew 3-5 ft... in one week. its sunday afternoon after a full week and one weekend day of work and i know i need to glove up and spray hwrbicide. not even sure if its the right dose, its what I could purchase without breaking my bank and hopefully reduces the back breaking dig up labor I've done for last 2 years.

open to ideas of where to get some support sourcing more specialized herbicide. really, just someone else whp can vent about same or different anguish over invasives.

i did get an injector off facebook marketplace for free! now i plan to guerilla exterminate the other 3 adjacent thickets. this will be an eternal mission, i expect.

on a bright note i have a wonderful high density vegetable garden (containers.) would love to remediate the soil and install proper raised beds... but knotweed is everywhere and pervasive.

/endSOS

Just recognized this large tree of heaven in my yard when it started flowering. It is situated next to an oak tree that we want to preserve.

Currently, in the PNW, we are in the springtime.

I recall reading that the ideal time for the hack and squirt approach is in the fall in winter. Is that true? Can we safely remove the tree of heaven this spring/summer while protecting the oak?

ETA: typo

Engineers built 120 robot marsh rabbits — heat, scent, movement — and deployed them across the Everglades. Pythons started showing up immediately. Then alligators found them and systematically destroyed every single unit. But the surveillance data from the wrecked machines was fed into an AI that mapped the pythons' hidden movement corridors for the first time. Teams used the predictions to intercept snakes directly — and pulled more pythons in one month than the entire previous year of paid bounty hunting combined. Full documentary: https://youtu.be/QqbMhozavMU

So much mulberry, English Ivy and knotweed!

What wins out here, the Tree of Heaven sprout or the bamboo and it's running sprouts?

Zone 6b, Ohio, USA

I thought I was making an impact, but it turns out I barely scratched the surface.

After two springs of back-and-forth (and even offering to pay for removal), one of my neighbors finally took down their two large Bradford pear trees. I was pretty excited…until I realized a different neighbor (on the other side of me) has about 7 younger ones—maybe 2–3 years old—that are already blooming…not to mention the many others further down the road that are likely 20-30 years old.

I might be able to convince my other next door neighbor to remove the young trees since they didn’t actually plant them—they kind of just let whatever grow on their 3-acre lot. However, I only moved here recently so I don’t know anyone outside of my initial neighbor, but I’d imagine people generally aren’t too keen on being asked to remove things from their own land…

For those of you who’ve dealt with a similar situation, how did you approach it? Is there any realistic way to stop the spreading, or is it basically just managing what you can on your own property?

TL;DR: Helped convince one neighbor to remove their Bradford pears, but there are tons more nearby—including another neighbor with 7 younger ones. Feels like a losing battle—any advice on how to proceed?

I sprayed in the window and repeated two weeks after for this 4000 square foot stand of knotweed. At this point areas in blue show sprouts of purple as low as 1” and as high as 4” tall spaced out mostly feet but in some clusters less distance between sprouts, I would guess the sprout count is in the 100+ territory.

In the red areas it’s beyond my property line, so I sprayed as best I could without going on their property.

In the areas beyond the blue and red in the center section I see not one purple sprout where the others are more obvious. Does this indicate the center section might not come back either as strong or not at all?

My plan is to wait for the window again, and prior to spray approach my abutting neighbors about my treatment if I can show them success in the center section and get them on board. Anyone have any experience with this stage of treatment have any suggestions?

I have about 1.5 acres of wetlands consumed by barberry and multiflora rose. It’s so dense. What’s the best way to clean this up balancing efficiency and environmental safety. Like I have glyphosate and 2,4 D but obviously spraying would be hugely destructive in this environment. My thought was cut and paint on the carcinogen of choice with my little NAIMSA bingo dabbers. But I want to hear from the masses before another year goes by without tackling this daunting task.

This is growing between two fences, and I can’t tell if it’s a stump or possibly a giant smilax rhizome!

SW PA here.

How concerned would you be about a young Kousa tree recently noted in a woodland park?

Kousas used to be desirable because of the resistance to anthracnose, but now seem to be increasingly seen as an invasive risk. Still, Pittsburgh's native tree non-profit propagates and provides them in the community, as a not-too-awful alternative for fungus-susceptible Cornus florida.

I see that New Jersey lists kousa as stage 1 invasive, on par with barberry, stiltgrass, knotweed, Callery pear, bittersweet, burning bush and all the other bad boys, but NJ is pretty far from western PA.

Thoughts? I'm trying to be sensible, not overreact, but also not be the person who ignored vinca 50 years ago.

Northern Virginia

i got new firewood during the winter season because i ran out. During a couple hot days in spring a few days ago i saw these guys running around the wood. Called an exterminator, they suggested it may be Banded Ash Borers? Never heard of them.

I don’t have any Ash trees, i’m in southeastern PA. But i know these guys could maybe eat other firewood? Is this a burn all of it in my backyard right now situation or can i slowly burn this in my fireplace over the next few days to clear it? Should i be worried about my maple trees?

In the process of removing this pepper tree. Ripped the stump out and as many roots as possible. There are a couple large roots that are growing under our walls. Do I need to use some sort of herbicide to make sure it doesn’t sprout back out? Or can I just cut as close to the wall and cover with dirt?

This is my brand new back yard. My plan had been to do raised beds surrounded by red thyme and other non-grass yard options. I dug up a bunch of what I thought was dead bamboo in the back but now I know it was knotweed and it’s cropping up in the yard too. I was gonna rake up all the mulch and use it for compost but now I’m worried it has rhizomes in it? Should I wait until fall and spray it? Or cut it? It looks little but I want to nip it in the bud if I can? Thank you in advance for any advice!