Leek Growing Info

Learning Download: How to Grow Leeks
When to Plant:
Direct seed as soon as the soil can be worked in the spring. Start transplant 4-5 weeks before this date if starting indoors. Transplants should be 12-16″ tall before moving outdoors.
After planting fertilizer plants until they begin to bulb every two weeks. Use an ammonium sulfate (21-0-0) in alkaline soils or a calcium nitrate (15-0-0) in acidic soils. 
Location:Planting Depth:Soil Type:
Full to Partial Sun1/4″ seed; 4-6″ transplantsWell drained, fertile, 6.2-6.8 pH
 Seed SpacingRow SpacingSeeds per 100′Yield per 100′Seeds per Acre
4-6″18-24″300150 lbs.87,000


Leek Seed Count 
1 Ounce: 10,000 Seeds
1/8 Pound: 20,000 Seeds
1/4 Pound: 40,000 Seeds
1/2 Pound: 80,000 Seeds
1 Pound: 160,000 Seeds
* These are average leek seed counts.  Varieties can vary.
Space Conversion:
1 Acre = 43,560 square feet, or 435’x100′

Weight Conversion:
1 Pound = 16 Ounces
1 Ounce = 28.4 Grams