BTW one thing I really hated (and hate in general - looking at you Peter Hamilton and your sci-fi multi-novel series) was the deus ex machina - in this case suddenly being able to grow a shedload of spores out of the blue. Sloppy sloppy writing.
Yeah. In episodic drama, it's fine to create a crisis and then resolve it in a single episode (or within two). However, in serialized drama actions should have longer-term ramifications. Otherwise there is no purpose to serialization at all.