Was wondering what size module I need to sow leeks in. Would ones that are 5cm deep be sufficient.
Leeks seem very tolerant of root disturbance, so it's not necessary to use modules. Sowing in a seed tray, or a big pot is fine if you want an early crop. Alternatively just sow them outdoors in an odd corner, and transplant to their final position once they are a reasonable size.
Nothing wrong with using modules, but a lot more time-consuming, and uses more compost.
I do them in standard trays with 24 cells... not that deep they do fine... Leeks are very forgiving.. :)
I just do this, they stay there till they go in the ground
this is how i set them away
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and this is how i let them grow on
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They look good fella, I sow mine in pots too and then transplant when they are pencil thickness...Still have about 30 left on the lottie so I had better think about getting them up as I need the space.