Also, DM Paul Weber has some excellent additional free battlemaps if you are playing using VTT, as well as a small optional extension of the adventure, "Sharruth's Tomb":
@robus For Seagrow caves, I scattered some barnacle crusted undead body parts around the octopus and violet fungi. The myconids then explain they added the defenses because of prior undead attacks. Without their leader and now without the defenses (thanks PCs!), they are terrified. This adds to...