Heirloom 1870. Long, broad necks are blanched by gradually hilling up adjacent soil. Essential to the gourmet’s kitchen. The standard variety for many years and still one of the best if you have a long enough growing season. Also known as Giant Musselburgh.
Germination: 5-10 days
Germination Temperature: Optimum soil temperatures 60-75ºF.
Seed Sowing Depth: 1/4" deep
Sowing Indoors: Start 8-10 weeks before last frost with soil temperatures 60-75 ºF. Sow in flats 1/4” deep, 1/4” apart. Transplant seedlings out mid/late spring, 4-6” apart. Liquid fertilize seedlings every 7-10 days. Seedlings size should be about a pencil thick at transplanting time.
Sowing Outdoors- Early to mid-spring when soil temperature reaches at least 55-60 ºF. Sow 1-3 seeds per inch, thin to 4-6” apart.
How much does a packet plant: 25-30 foot single row
Harvest- Start harvesting baby leeks at 1/2” diameter and leave some for a larger end of season harvest.
Tips- Needs fertile, well drained soil. Amend with compost or apply organic granular fertilizer. Adequate water is very important for optimum growth, 1" per week. You can plant leeks in a trench and as the plants mature, fill in around them to assist in blanching.