my DM literally said and I QUOTE: "Twig blights are just baby groots but annoying."

i tamed one and named him grut

Choppin' wood for the fire, me son.  Heat up the kettle and the meal's begun.

Cool

I have an idea for a twig blight, except it has leaves and grows poison berries. It could also throw them as a weapon. What do y'all think?

DM let me use this as my companion. Meet beanos

One burning hands, dragon's breath, or Flamethrower Eldritch Cannon can easily melt a pack of these to ashes.     

Their fun to fight, but not when they apparently launch from trees ;-;   Had a fun DM when first fighting these little critters 

SPOILER ALERT: SUNLESS CITADEL SPOILERS.

Really? you fight tons of them in "The Sunless Citadel." Your first encounter is with them, and there's like 4 of them. per night. every night you're not in the citadel. and then in the citadel, There's more.

Sounds rather interesting

Totally! 😂

Quote from CrazyPuerto92 >>

 I am doing the same thing thing as well but I am going to have them be a swarm due to the influence of a Cult of Moander. Hopefully my party does well against them and Preist and corrupted Dryad in his ranks.

 Actually I'm doing something sort of similar with a set of dryads. The premise of the game revolves around a logging company that's been steamrolling in and killed some trees tied to a group of dryads. As one of their trees was dying one of the dryads found a way to keep themselves alive; a ritual were they take a cutting of their tree and implant it into a humanoid, paralyzing them. It changes the dryad into something darker, but they survive. 'Blood Dryads' lose the ability to charm and to treestride, and in place of it they gain the ability to raise twig blights and use 'corpsestride'. 

I’ve just got one as a pet and it’s the coolest thing ever…his name is Twig

So my party decided to capture a twig blight, intending to keep it as a pet. I... have no idea how I'm going to handle this. Any ideas? (And no, nobody can learn Speak with Plants.)

My party captured one of these in a box and wants to try and befriend it. How do I handle this, especially since the party didn’t do anything to the Gulthias tree that spawned it (them not knowing what it was)? Is it possible it would become ‘passive’ given distance from the tree, or would it remain hostile? Can they reason with it? It can understand Common, but also has an Int of 4…

We kidnapped one

it's Neutral Evil so it probably wouldn't just become passive because of distance from the tree that spawned it.

Is it undead?

37... in a row?

I died as a LEVEL 4 CLERIC from a SINGLE TWIG BLIGHT. Rolled ones on ones on ones. 7/10 would die again