
For the best leek crop, the main growing site should have been dug over (and manured where necessary) the previous winter.

The ground needs to be well-prepared by forking over the soil and then dragging a rake over the surface several times in the spring - this will help to create a fine and level tilth.
A general organic fertiliser should also be raked into the soil a week or so before transplanting.
During the growing season, water the leeks regularly in dry spells and remove all weeds either by hand or with a hoe.
Regular feeding with a liquid, organic plant food will give you thicker, good quality stems.
Don't feed your leeks after the end of the summer, especially if you plan to keep them going over winter.
Once mature, leeks are simple to harvest.
To avoid damaging the plants, use a fork to gently ease them out of the ground - never wrench them out of the soil.
Fortunately, leeks are tough plants and mid and late-season varieties can be left in the open ground over the winter months - these can be lifted at any time, as long as the soil is not frozen.