Hairst 2 Posted on September 3, 2017 by robinacrawford Hairst 2. I followed the recommended soil composition in an 1826 book on draining and planting peat bogs when sowing my broad beans this year- glacial clay, peat, burnt peat ash, inert sand and gravel. Share this: Click to email a link to a friend (Opens in new window) Email Click to share on Reddit (Opens in new window) Reddit Click to share on Bluesky (Opens in new window) Bluesky Like Loading...