Web markers are severe and destructible. This makes them terrain markers and so them being removed adds grow tokens to Botanists within 4". (Rulebook pdf pg28)
My list includes Nexus, Nightsilk Creaper, Archivist, Dr. Meredith Stanley, and three Botanists. First Activation: Nightsilk Creaper Interacts to drops a scheme marker within 2" of Nexus and Create Web to put a web maker within 2" of Nexus and 4" of the Botanists then walks. Second Activation: Archivist Interacts to drops a scheme marker within 2" of Nexus then walks. Third activation: Nexus uses Citizens of Malifaux turning the two scheme markers and the web maker into Eyes and Ears (needs an 11) (each Botanist gains a grow token), then it uses Exosceletal Connection to drop another web marker within 4" of the Botanists, then walks. Fourth Activation: Dr. Meredith Stanley uses A Fungus Among Us to remove the second web marker to turn an Eyes and Ears into a Berserker Husk (each Botanist gains a second Grow tokan).
The Botanists are maxed and have not yet activated.