How fast is too fast?

[Matt]

Thanks, everyone. I'm taking it to heart.

Keen, thanks for the pointer to your blog. I read it with interest. I hope I manage to avoid some of the mortality you experienced.

Our lone mushroom is now doing strange things. It is either dying or reproducing... It has collapsed it's canopy and appears to be shedding pieces. Should I be worried (and if so, what can I do)?

Matt