Log size and quantity of spawn: 1 litre of spawn is sufficient for 5 - 6 logs of length 30 - 35 cm and diameter approx. 20 cm (inoculation with 1 cut slot per log). Important. The logs you use must be healthy and the bark should not be damaged. After cutting from the living tree, the logs should be stored for 4 to max. 12 weeks before inoculation. Growing on straw: I litre is enough for a normal rectangular bale with a dry weight of approx. 10 kg straw.