What troublesome invasive weed do you have in your area?

I'm going to hit ditch again today with brush killer on specific weeds. Mostly trees and vines suckering up. Trees probably are my most common weed to get rid of though most just get mowed over. Where I don't mow though would be a forest of fast growing garbage trees for the most part. I try to save the good seedlings for transplant but that's a battle with the rabbits.
 
I just wiped out a bunch along the road with Trimec.

Buckhorn plantain is what it is. Probably edible with the new leaves.
Thanks. I don’t mind the leaves. I don’t like the little flowers that sprout up a foot high just days after mowing. I had to mow them recently at my one property. It was a horrible dusty mess. I had no need to mow besides these weeds. Very annoying.

Ideally I’d kill this but leave the rest of the weeds. I don’t need to spread poison all over to have a grass lawn (I’d prefer clover personally), but the shoots that sprout up are too much.

Will trimec kill my clover?
 
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Sandburs (aka stickers) are easily the most obnoxious weed that I have had to deal with, and one of the most difficult to get rid of. These nasty stickers penetrate the skin painfully, draw blood, and are difficult to remove because they have barbs. If you have dogs you will not be able to let them out in the yard unless you get rid of them. If you don't take action to eliminate them they will take-over your yard. The ONLY thing that works is the timely application of one of only two different pre-emergent weed control chemicals (both very expensive) at least twice a season EVERY season.
 
Potato Vine...
This is what it can do in a matter of two months. It creeped over from our neighbor's yard until we tackled it together.
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Fennel, thistles, ice plant, Himalayan blackberry shrubs, and some kind of ivy. And oregano*. :ROFLMAO: Goats eat them all. I'm sure someone will put a negative spin on my preferred weed mowers.

*invades kitchens
 
What type of cedar is that?
In Texas what we call "cedar" trees are not cedar at all, they are actually Ashe Juniper trees. These are very obnoxious and can be likened to weeds because they grow and spread like weeds. They are more like a large bush than a tree.

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They also emit a huge amount of pollen between December and March that make the high percentage of people that are allergic to cedar pollen physically ill. They call it "cedar fever".
 
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In Texas what we call "cedar" trees are not cedar at all, they are actually Ashe Juniper trees. These are very obnoxious and can be likened to weeds because they grow and spread like weeds.
AH - makes total sense now. Our WRC - western red cedars would not survive there, maybe incense cedars would but not like a weed. Thanks.
 
In Texas what we call "cedar" trees are not cedar at all, they are actually Ashe Juniper trees. These are very obnoxious and can be likened to weeds because they grow and spread like weeds. They are more like a large bush than a tree.

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They also emit a huge amount of pollen between December and March that make the high percentage of people that are allergic to cedar pollen physically ill. They call it "cedar fever".
@Pablo
We've got 2 of these monster weeds remaining in our back yard that are 6' in circumference and 40' to 50' tall.
there's one in the foreground and another in the background, ole narley live oak in between.
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I pulled five yard bags full of this stuff out of my yard this spring because I didn't put down pre-emergent. Won't make that mistake again.

You are in TX as well. I’m in Austin. Do you know when these things germinate here? For me it seemed like they were spreading in the spring. The few I saw that were semi-established were in early April. I didn’t spot them when they started as I wasn’t looking for them to show up in this area of my yard. I hit these with Roundup or dug them up with a shovel. I continued to see babies for the next four to six weeks in other spots. I just pulled those by hand with a weeder. I ask because I remember searching this and something saying they germinate the fall.
 
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Thanks. I don’t mind the leaves. I don’t like the little flowers that sprout up a foot high just days after mowing. I had to mow them recently at my one property. It was a horrible dusty mess. I had no need to mow besides these weeds. Very annoying.

Ideally I’d kill this but leave the rest of the weeds. I don’t need to spread poison all over to have a grass lawn (I’d prefer clover personally), but the shoots that sprout up are too much.

Will trimec kill my clover?
Anything that kills most broadleaf weeds will kill clover. It's why I only spot spray as I like the clover. I've been slacking in the yard this year. Usually walk it completely with a 4 gallon back pack but. Only did about half. The violets and plantain are making a comeback already.

Last summer I clear out abut 300 ft of ditch along my township road. It was all over grown cherry and wafer ash among other weeds. Most all spread by the roots so cutting them down really did nothing as they all sucker back up. Sprayed two or three times last year and about 5 times this year. Just started to use the brush killer though last time. It does the trick.

Trimec doesn't take out violets and other glossy leaved plants even with the surfactant without repeated applications. And the extra ingredient in Trirmec is accumulative and should not be used more than a couple times a year. Very volatile too so the fumes will get to close by plants you may not want injured.

Dicamba. It really hits me when they spray the field to the west of me. Killed off some small newly planted trees and even the old established ones it really kills off the new leaves. Some kind of ban on it pre planting now.
 
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