The heroes leave the greenhouse to discuss terms with Wambus
Wambus is unwilling to leave, and that wouldn't work for producing the food Storm of Vengeance and others need either. He's willing to provide soil and support or some deal with the plants to keep them happy and get some help around the farm.
He provides a wheelbarrow full of the soil he's prepared, and the heroes return to the greenhouse with it
Talks go ok with the plants, they hadn't realized Wambus was the sole source of suitable soil. They are swayed by Slate's arguments, but notice Psithurius casting guidance to help and demand Psithurius's death in return for their agreement to other terms.
Slate asks Psithurius to play along, then attacks him. But the plants saw through the charade and attacked!
The gourds swarmed and the Pump-Queen's vines grabbed Slate and Psithurius!
As the gourds swarm, Slate gave an impassioned speech! Sieze the means of gourduction!Throw off the shackles of the Pumpking and Pumpqueen! He then slays the Pumpking as the gourds, heeding the call to insurrection, turn their attentions to their oppressors.
Caiel cast command, ordering the Pumpqueen to release Psithurius, then go stand in the corner and think about what she's done.
As the Pumpqueen comtemplates her actions, the gourd revolution swarms the queen, killing her.