Yes, after all, it is wood pulp. For the right chemical balance in a compost, for it to work well- you need layers of 'green' and 'brown'. Cardboard is perfect. My 9 compost bins (!) thrive on this, and the worms just love those carboards layers.
We are so lucky to be having a real Indian Summer- sunny and bright. Cold at night, but warming up nicely in the warm sun- had lunch in the garden yesterday. We live at 950 metres, so quite high in altitude.
What has survived in your garden with minimal or no watering?
Anyone got any ideas for washing handkerchiefs


