24/11/2011 at 15:29
I'm surprised you haven't mentioned two of the most important points to growing good sized, flavourful, unforked parsnips:
- a lot of organic matter dug into the soil (or pot)
- loosening up the soil by digging deep and well, and removing any stones
And another point is that it takes a while for the seeds to germinate, until this time the soil needs to be kept moist and weed free for the best results.
I learned the hard way... ;)