2) Euros are very heat tolerant – I’m pretty sure not everyone will agree with me on this (including some academics). Once again I am relying on George Mingin’s vast experience with these worms since I myself have never had the opportunity to test this out. George says he’s had Euro beds reach 35 C (95 F) without any obvious signs of stress from the worms – whereas his Reds tend to start crawling out of the beds once temps reach 33 C (91.4 F). In “Vermiculture Technology” (and various other publications connected with Dr. Clive Edwards) Edwards & Dominguez suggest that 25 C (77 F) is the upper limit of this worm (35 C given as the upper limit for Reds).
I seem to recall, however, that Larry “Garbage Guru” said his Euros died off when it got really hot, while his Red Worms survived.
Bottom-line, you can take all this with a grain of salt! Lots of different factors come in to play here (moisture content, for example, can have a huge impact on tolerance of higher temps).
My main recommendation is simply NOT to assume they don’t handle heat well.