- Leek Varieties | Planting/Harvesting Program Comparison Chart | Johnny's Selected Seeds
- Winter Growing | Recommended Crops & Varieties
- Manual Leek Planter | Instruction Sheet (PDF)
- Onion & Leek Production from Transplants | Tech Sheet (PDF)
- Leek Varieties | Planting/Harvesting Program / Comparison Chart (PDF)
- Leeks | Key Growing Information
- Classic Storage Crops | Post-Harvest Handling & Storage Guidelines
- Johnny's Planting & Harvesting Programs
Johnny's Leek Harvesting Program
Extend Your Leek Harvest Across 7 Seasonal Slots
Johnny's Leek Planting/Harvesting Program is designed to take the guesswork out of planting, allowing you to maximize yield and quality over the widest possible harvest window.
- First, use the chart below to choose varieties for planting by their projected sequential harvest slots:
1) summer; 2) late summer/fall; 3) late fall/winter; and 4) winter. - Next, plant several leek varieties with different maturity dates at the same time.
- Then, harvest in succession. Each leek variety will mature in its appropriate seasonal slot from a spring planting. The less cold-tolerant leeks are faster-growing, and the more cold-hardy leeks are slower-growing.
Johnny's Planting/Harvesting Programs
- Broccoli • Standard Heading Varieties • Planting Program
- Broccoli • Mini & Sprouting Varieties • Planting Program
- Brussels Sprouts • Planting/Harvesting Program
- Cauliflower • Planting Program
- Leeks • Planting/Harvesting Program
- Leeks • Planting/Harvesting Program • PDF Version
- Lettuce • Full-size Head Varieties • Planting Program
- Radicchio • Planting Program
- Radish • Specialty & Daikon Varieties • Planting Program
- Spinach • Planting Program
- View ALL Planting Programs
HARVEST SLOT
SUMMER
SUMMER
Days to Maturity: 75
Open-pollinated (OP). Remarkable earliness and length. Organic or conventional seed; conventional plants.
HARVEST SLOT
SUMMER
SUMMER
Days to Maturity: 85
Hybrid (F1). Upright habit for easier cultivation. Organic or conventional seed.
HARVEST SLOT
LATE SUMMER/FALL
LATE SUMMER/FALL
Days to Maturity: 90
Hybrid (F1). Exceptional uniformity makes for a faster harvest.
HARVEST SLOT
LATE SUMMER/FALL
LATE SUMMER/FALL
Days to Maturity: 100
Open-pollinated (OP). Fall leek holds quality in the field. Organic or conventional seed.
HARVEST SLOT
LATE SUMMER/FALL
LATE SUMMER/FALL
Days to Maturity: 105
Hybrid (F1) with upright habit and long, beautiful shanks. Organic or conventional seed.
HARVEST SLOT
LATE FALL/WINTER
LATE FALL/WINTER
Days to Maturity: 110
Hybrid (F1). Matures late fall to winter and can be overwintered in temperate climates.
HARVEST SLOT
WINTER
WINTER
Days to Maturity: 120
Open-pollinated (OP). Very winter-hardy leek. Organic seed.
Tech Tip: When to Harvest & How to Store Your Leeks
Our Leek Harvesting Program allows you the option of producing the maximal quality and yield across the seasons by planting several leek varieties with differing days to maturity, then harvesting in succession.
Timing of your leek harvest can be made in a less formal fashion if desired, however. Just dig as necessary; the leeks can be harvested at any time during the season and in some cases they can be held later in the field, if desired. We recommend you trial for the best results for your needs.
Leeks will store for several weeks. Clean the plants and store at near-freezing temperature in boxes or in a humid cooler, or, place the roots in a moist soil/sand/peat mix and store in a root cellar under the same conditions as onions. Tops will stay green if exposed to some light.