I have a raised bed for my parsnips which I use every year with no problems. I put a 3-4 inch layer of well rotted compost on 2-3 months before planting (about now). Three weeks before sowing I add some 6X fertilizer. Once the parsnips have germinated I sprinkle on some bonemeal to supply phosphorus for good root growth. I usually get a bumper crop with no disease issues.
Started by Gwiz on Grow Your Own
Started by pete.guinness on Grow Your Own
Started by shed head on Grow Your Own
Started by mum23kids on Grow Your Own