I thought I’d share my method of leek planting as I do find it fascinating. It is the classic technique that many of the old timers advocate but more modern gardeners seem to shun. I personally think it works a treat and is particularly good for dry conditions.
When I was a kid my dad used to grow whopping leeks for the show bench. As one of those mad exhibition vegetable growers, his process for growing leeks was finely tuned, if not obsessive. His leeks were planted on long raised beds stacked with manure and earthed up to blanch the stems. I can remember him out in the garden with a tape measuring the girth of his leeks. I just grow leeks for eating, so no fancy treatment here. Apart from planting out and watering no further attention is required until harvest.
The best time to plant winter leeks in my garden is late summer, depending on the weather. If it is too hot and dry I’ll leave it until later, even as late as the end of October. Leeks are best started in a seed bed and planted out when about the thicknesss shown below. In France it is common place for gardeners to buy baby leeks at this stage rather than go to the trouble of raising the seedlings themselves.
Carefully dig up the young leeks and put straight into a bucket of water, keep them like this until you are ready ready to pant, which you need to do within a day or two. Take the seedling leeks and cut the roots back to 3 or 4cm, then I cut the tops off just above the smallest inside leaf. It may seem a bit harsh on the plant but it really does work for seedling alliums. The reason for doing this is to reduce any damaged or unnecessary plant material so that the roots are not supporting what they don’t need. Reducing the roots is optional but I find that it does help the leeks to re-establish and it cuts back roots which may have been damaged when the seedlings were pulled up. It also makes the seedlings more manageable, getting huge long roots into the planting hole is difficult, roots can get congested or damaged. This method allows the roots room to start again and water to be taken up more readily on planting. It is an old technique used in the UK and more commonly in France when planting anything out in summer, even lettuces get this treatment, which I do find a bit barbaric and my observation is that they never quite recover from it. Lettuces are much better plug sown and planted out without too much disturbance. Anyway I digress. Leeks do seem to like this treatment so I carry on doing it.
- Clear any weeds from the planting area. In this case I am using land that had corn and pumpkins on previously so it was heavily manured earlier in the year.
- Hoe the top 6-10cm of soil to loosen and work in a little bonemeal and woodashes or not previously manured.
- Mark a line for the row of leeks and with a knife or trowel dig a planting hole about 10cm deep, at intervals of 20 to 30cm. Spacing will depend on the variety or how big you want the leeks to grow.
- Drop each baby leek into a hole and water well. In dry weather water the holes before putting the leeks in, as well as after.
Note There is no need to push the soil back in around the leek. The roots are safely at the bottom of the hole and the hole has been filled with water. Gradually the hole will fill with soil and or the leek expand to fill the hole. Either way you get a nice blanched stem and a leek with plenty of water directed to the roots.
Water well every few days making sure each hole gets filled for the first couple of weeks until the roots get a chance to establish then water as normal once a week or so.