Rock Dust on Beds Community › Community › General Gardening › Sowing and Growing › Rock Dust on Beds This topic has 1 reply, 2 voices, and was last updated 7 years, 10 months ago by charles. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 20th October 2018 at 10:55 pm #49464 ElizaDParticipant Hi Charles and all Having put a note to remember to put the rock dust down before mulching with compost I duly did so – until today that is. Only after mulching three beds did I remember. Will the rock dust be ok just scattered on top? Thanks, Eliza 21st October 2018 at 4:38 am #49465 charlesModerator It will be fine Eliza, worms wil migrate upwards to eat and then excrete it. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In