Pot on leeks?

[PyreneesPlot]

Mine are often tiny when they go out in June (eek, this month!), disappear into their dibbed holes and can be the size of my arm by the first frosts.
I sow a couple of hundred in a large pot and the first year potted them on and have to say they were no bigger at harvest time than when I haven't bothered.

Just found this picture of mine just before planting out in 2013

[Shadylane]

Jay - You're welcome
PyreneesPlot: I agree I don't think it makes a difference to final size if you pot them on or not. Our neighbours always plant them out when very wee and ours are bigger because I plant them in a clump in the ground, but they always end up around the same size. Personally, though I find they thicken up when planted out and it's much easier to dib a thicker leek than a blade of grass