In the American Southwest, it's tumbleweeds.
Where I live, in the Southeast, it's kudzu.
Kudzu is horrible. It's everywhere back in my hometown. Along sides of the freeway you can see huge outcrops of kudzu and during the colder months there's nothing but barren strips of desolate land.
Actual pics from around my area...
It was the most terrifying experience in my life when I, unexpectedly, encountered this abomination growing in my basement. Now I can't sleep.
In the American Southwest its frikkin' jumping cactus and prickly pears.
In New England, the bad plant is Asian bittersweet. I have a personal vendetta against that evil vine.
Here in middle earth the most terrifying plant I've encountered is treebeard, king of the ents.
In my garden, it may be wild mustard. If you let it come to bloom and seed, you are doomed. If you garden organically, the only viable defense is early and aggressive weeding, and burning the weeds.
i'm in the southeast, but i wouldn't pick kudzu, it's just a nuisance.
the scary ones are definitely poison ivy / poison oak. and i'm leaning towards poison oak as the more sinister of the two. on some of my old hiking trails, it can easily grow up to eye level (i've had it here and you don't want it, trust me). and in the winter, it's difficult to tell poison oak apart from other woody shrubs. at least with ivy, the vines on the trees are kind of hairy.
on the bright side, tho, i spent enough time around it that i can spot it in most any growth stage. the reddish ivy leaves in the spring are attractive, too.
Larry the Scary, indeed!
Buttercups and triffids.
Seems that we have it here in Oregon now.
Found all over the West coast, Blackberry plants are Oregon's kudzu. I wonder who wins in a head-to-head match; blackberries or kudzu.
shush, you. blackberries are manna from heaven.
We love the berries but they will take over the property in just a few years. Life in rural Oregon is a never-ending battle with blackberry plants.
i'm a little jealous. we have them here, but they don't do well in shade, so all the trees tend to keep them confined to a few untended open spaces. even then it's not really a weed. must be a soil difference or something.
Where are you located, approximately?
approximately Birmingham, AL. we get a lot of rain here, too, fwiw.
Catnip of course...every cat in the county rolling around in the yard...dogs barking...birds circling...voices in every direction calling "here kitty, kitty"...it's a nightmare...LOL.
We've got wild blackberries, and I'd love for them to take over the property. The crop was pretty thin last year, but the previous year, I could pick at least a gallon of berries every couple of days. I LOVE blackberry pancakes with real maple syrup!!! One of our neighbors makes maple syrup and she dropped off a canning-jar of it about a week ago. Nice and dark and thick - not like the mis-graded stuff in the stores.
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