its cactus, which is flower plus axe, i pretty much 100% discovered the stuff in kraft & slash and its almost the exact same here, so yeah, figure out how to make axe and you're good
i forgor how to lol
(edit) wait nvm i got it
(spoiler)
stone+electricity = gravel
gravel+water= concrete
concrete+stone=crucible
crucible+charcoal=forge
forge+stone= axe
axe+flower= cactus