Lancia Organic leek seeds are CERTIFIED ORGANIC! Lancia is a very early, downright delicious leek for summer and early fall harvest. Sometimes listed as Swiss Giant, Lancia has long white shanks and strong flag foliage that stands quite erect in the field. This leek can also be harvested immature for gourmet baby leeks. Strong uniform growth and excellent leek flavour make this leek a great choice for home gardeners. Start all leeks indoors or in an outdoor seed bed. Once they are about 20cm (8") tall, gently transplant them into fertile, humus rich soil.
These seeds are coated with an inert, organic form of graphite. This helps to minimize clumping in storage and seed sowing machines. The coating is approved by organic certifiers in Canada, the US, EU, and Japan.
Matures in 90 days. (Open-pollinated seeds)
Leeks are a valuable addition to the garden because they can be used instead of pungent storage onions from October until April. Even in heavy soils, leeks are easy to grow and have lots of flavour. Continue reading to learn how to grow leeks from seed.
Allium ampeloprasum var. porrum
Easy, but slow. Transplanting is required.
Season & Zone
Season: Cool season
Zone: Winter harvest leeks are hardy to Zone 7.
Start summer/fall harvest leeks 6-8 weeks before the last frost date, in flats indoors. Start winter harvest leeks indoors from March to mid-June. In mild winter areas, start them in a humus-rich nursery bed outside, and then transplant. Optimal soil temperature: 10-25°C (50-75°F). Seeds should sprout in 10-16 days.
In flats: Sow seeds 5mm (¼”) deep, about 1cm (½”) apart. Transplant when 20cm (8″) tall. Space 20cm (8″) apart in rows 45cm (18″) apart. Rows can be as narrow as 20cm (8") if planting in raised beds or other situation where weeding will be simple.
Ideal pH: 5.-6.5. Leeks have short roots, so the benefit from fertile soil with lots of compost and ½ cup balanced organic fertilizer worked in beneath each 2m (6′) of row. Traditional garden wisdom recommends using a dibber to make holes 15cm (6″) deep. Transplants are then set at the bottom of the hole and the hole is left unfilled – rain will fill it in as the leek grows. To blanch further up the stem, hill soil up around the stem as the leek grows, or mulch with straw.
However, the wise and much loved garden writer Linda Gilkeson asserts that there is no need to plant leeks into holes or trenches. She recommends transplanting the seedlings only at the depth of the soil plug they grow in. They will still produce nice, tall, blanched shanks, with no soil grains between the leaves.
In late fall, mulch around leeks as high up the stems as possible. If the forecast is for weather below -10° (14°Ï‚ cover them with a blanket or tarp.
Days to maturity: From transplant date.
Dig at any size, as needed. If winter harvest leeks freeze solid, wait until they thaw out during a warm spell to harvest.
In optimal conditions at least 65% of seeds will germinate. Usual seed life: 1 year. Per 100′ row: 240 seeds, per acre: 70M seeds.
Grow leeks with beets, carrot, celery, onions, and spinach. Avoid planting near beans and peas. Leeks help repel carrot rust flies.