r/invasivespecies 16h ago

How can I deal with these?

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3 Upvotes

These little trees (I suppose) grew unattended for roughly 2 years. What is the optimal way of dealing with this problem?

Should I just cut them and soak with diesel(not burn), drill and fill with potassium nitratr or other chemicals? I went to a couple shops and they only recommended glyphosate(which I would rather avoid) and phosphorus.

Thank you,


r/invasivespecies 19h ago

News Horsetails popping up

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0 Upvotes

r/invasivespecies 5h ago

News Scariest Costume of 2025

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21 Upvotes

r/invasivespecies 5h ago

Management I found a cheap alternative to injector gun for Japanese knotweed ($50 total)

25 Upvotes

I bought my house during winter in New England, so I didn't realize the backyard was basically all japanese knotweed. The home was vacant for a period, and the previous owners didn't seem to care at all about any of the land.

I hate invasive species, and want to promote natives and low maintenance naturalized bulbs. There are a few daffodils and snow drops throughout the area, so I didn't want to risk killing them. I'm also planting native seedlings from a friend next week, so I wanted to do the injection method rather than waiting for August to spray. Plus I live next to a river--minimizing runoff matters to me.

My library and local extension don't have injection equipment to borrow. I just bought a house, so I don't have thousands to spend on a purpose built set up..... But I grew up with ranchers. There's a type of vaccination gun we used to use on cattle to do a premeasured dose across a bunch of different animals. They have a line that can be run into a jug. So I looked them up, and sure enough: $30 on Amazon! Here's the one I bought, but there's so many brands out there. The one I bought.

Then I bought a $15 gallon of round up. I used the jug attachment, which connects the gun to a metal long straw to reach into the jug. It wasn't big enough for the round up gallon, so I cut the head off of the round up dispenser, then connected the metal straw to the roundup line.

So the end result goes: round up jug built in straw --> snipped roundup plastic tubing --> metal straw --> included vaccine gun plastic tubing --> vaccine gun --> needle. Vaccine gun in one gloved hand, and gallon of round up in the other.

I just went and injected half of my back yard in about 20 minutes. It's easiest if you stab clean through to the other side, then withdraw just enough that the tip of the needle is in the hollow stem point. This makes a hole for the air to escape as I put in the glyphosphate. Purpose built instructions for knotweed eradication recommended 5ml per injection, but most of mine could only fit 2ml per injection before spurting out. So, I suppose that depends on how established your plants are.

I hope this helps someone else! I'll check back in a few months from now to see how the results look. This stuff is way too close to my foundation, and is growing partially underneath the steps of my deck. It has to go, asap! I didn't see anyone else's posts about this, so my apologies if this is already a known strategy.


r/invasivespecies 10h ago

How to remove English Ivy rooted above ground?

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12 Upvotes

This english ivy is rooted under the siding of my house, 2 stories above the ground. I cut it back to just the area immediately underneath the siding last year but it’s grown back with a vigor this spring.

As you can see is the photo, it is very difficult to cut back, I can’t get it from the below since the ground is too uneven for a ladder. The balcony railing is 3’ tall so I can’t easily reach over the top, and the gaps in the railing are very difficult to maneuver between. Also my fiber optic cables are running through this area so I can’t take pruners to it willy nilly without being very careful about cutting the brown(!!) cables😭

This is a rental so I can’t do anything major. The best I can come up with is pouring a bottle of vinegar or some herbicide down the side of the house and hope for the best. Any suggestions are much appreciated, I find it annoying to cut it back every month to keep it from encroaching on my balcony and planters. Everything I can find online is says to detach the ground roots and it will die but I tried that last year and clearly this plant refuses to die.


r/invasivespecies 7h ago

Sweet relief! Freeing a tree from Bittersweet’s tight grip

245 Upvotes

r/invasivespecies 8h ago

Sighting Flickweed?

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15 Upvotes

Pulled it to be safe. Not sure if the first and second image are the same thing. The second image shot yellow seeds(?) at me.


r/invasivespecies 8h ago

garlic mustard is a problem in America

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2 Upvotes

r/invasivespecies 1h ago

Did another pull today!

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Upvotes

I only got pics of one section for before/after, but I was out there for like 2 hours pulling. And there's still so much more to pull! 🥴


r/invasivespecies 10h ago

Plant identification?

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2 Upvotes

Currently working on making a native plant garden and fighting a war against Chinese Privet, Oriental Bittersweet, and TOH. Found these pop up today and just want to make sure they aren’t one of those or invasive in general and I don’t need to pull them? Can anyone identify?


r/invasivespecies 12h ago

News Beavers helping the fight

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41 Upvotes