As of Grubbypaws last mail, just today I thinned out my Parsnip. But reading the mail, maybe I should have left it for a while, they are only with the one leaf, and I was thinking about the disturbance it would create if left much longer. Conclusion is: what a learning curve we are all on, and there is no exact or guaranteed method. But I have to say that Ivor seems to have perfected it the best it can be. I mean, getting them in the ground in the middle of March.....in north Wales.