Can you identify this plant?

What in the heck is it?

This plant volunteered in one of my planter boxes in the garden. I left it alone, thinking it was a watermelon vine. Instead, it grew UP and has put out thorns and flowers. It’s next to a basil plant, if that gives you a sense of scale.

For those who can’t see it:
– It’s about 12 inches tall
– Leaves shaped sorta kinda like oak leaves, or watermelon leaves
– Clusters of bright yellow flowers. When the flowers close, they develop into thorny balls. No idea what these will later become.
– Thorns on the stems as well

Could it be a mutant watermelon? Is it something else entirely? I’m too impatient to wait for the end of the summer.

ETA: Damn. Can’t edit the spelling in my thread title.

I’d bet it’s some kind of squash plant, but I have no idea which one…

Triffid

Well, the apocolypse has to start somewhere. Might as well be my back yard.

It might be this – buffalo bur nightshade.

Woah. That’s it. And apparently, it’s nasty (I guess the “nightshade” in its name should have been a giveaway, there). I have a wee little flock of chickens that I let roam around the yard, so I’ll dig it out ASAP, before they try nibbling on it.

Yeah, that’s one scary-looking plant. Quite the defense system it’s got there. You should probably wear gloves when you pull it, and then salt the earth after. :slight_smile:

Wow. I have never seen that plant in my life before until this year. I have several of them growing in my yard and was planning on getting rid of them this weekend. If I can be nosy, where are you Beadalin?

Not a plant expert, but I thought it looked kinda like the tomato plants my wife is growing on the balcony. Pleasantly surprised to see I’m not all that far off.

Good luck getting it out of your planter!

Nevermind, I see here that this plant grows almost everywhere in North America… Strange how I have never come across it anywhere.

I know, I was surprised by the range, too. It’s labelled as noxious and invasive, so naturally it’s also really successful. Ugh. I had such hopes for it to be something tasty, too.

And for what it’s worth, I am in Minneapolis, MN.

its very close to the wild cucumber that I grow. Echinocystis lobata but yours is much more prickly looking.