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Growing Instructions

What is Lettuce?

Lettuce (Latuca sativa) is cool season annual in the Compositae family, which includes endive, escarole, chicory, globe artichoke, sunflower, Jerusalem artichoke, salsify, and burdock.

Looseleaf- var.crispa. First to maturity, these fast growing lettuces do not form a head. Good for babyleaf culture.

Butterhead – also known as bib, or Boston, this type forms a loose head with slightly oily leaves. Beautiful, sweet and tender, but bruises and tears easily.

Romaine – var.longfolia. Romaine forms a tall dense upright head with a tender heart. It tolerates warm temperatures and is less prone to bolting.

Iceberg – var. capitata. The fussiest type to grow, iceberg will form a compact round head if given a long cool season. It bolts easily if stressed.


Organic Non-GMO Jericho Green Romaine Lettuce

Jericho-Organic-Lettuce-See-01Bright green leaves, unique silky texture and sweet flavor even in the heat of the summer. Good selection for indoor or outdoor cultivation. Jericho has some tolerance to Powdery Mildew and Downy Mildew as well as excellent resistance to heat stress and Tip Burn. Spring/summer crop • Field or greenhouse. (Lactuca sativa)

Days to maturity: 28 days baby, 57 full size

Soil Requirements

Choose cool, well drained, loose soil with pH 6.2-6.8. Lettuce is sensitive to low pH. Use 50-75lbs Nitrogen/acre, ~150 Phosphorus and Potassium/acre. Sidedress with N 3-4 weeks after planting. With transplanting, use 2lbs/50 gallons starter fertilizer, 4-8oz per plant.

Position

Full sun to partial shade

Seeding Depth

1/8”, seeds require minimum amount of light for germination.

Seeding Rate

Babyleaf – ~60 seeds/ft, in 2” bands. Full size – ~3 seeds every 8-10”.

Plant Spacing

Babyleaf – continuous band. Full size – 8-12”

Row Spacing

Babyleaf – ¾” between bands, 16 rows/36” bed. Full size – 12-18” or 3 rows/36” bed, 5’ centers.

When to Sow

Lettuce can be seeded in the spring as soon as the soil can be worked. Days to maturity are from direct seeding in spring conditions, subtract 10-14 days if transplanting, subtract 7-10 days if planting in summer conditions, add 20 days if planting late summer-fall In certain areas, lettuce can be grown throughout the summer by choosing varieties which are heat tolerant; however, many lettuce varieties have difficulty germinating in soils above 75°F. Start transplants 3-4 weeks before setting out. Sow seeds 4 per inch in flats or small-cell plug trays, barely covering with fine soil. If sowing into flats, transplant 2 weeks later into plug trays, pots, or into another flat at 1-2” apart.

Other Considerations

Harden off seedlings by reducing water and temperature for 2-3 days before transplanting.

Frost Tolerant

Choose cold tolerant varieties to withstand light late-season frosts.

Drought Tolerant

Keep moisture levels even. Drought stress can cause bolting.
Heat Tolerant
Choose heat tolerant, bold-resistant varieties (such as Batavian types) for summer plantings.

Seed Specs

24,000 seeds/oz avg. M= 1,000, MM=1,000,000

Seeding Rate

Baby Leaf – 96M seeds/100’ bed (~ 4 oz), 960M seeds/1,000’ bed (2.5 lbs), 7.7MM seeds/acre (~20 lbs), using ~960 seeds/ft, 16 rows/bed, 36” beds, 6’ row centers. Full Size – 360 plants/100’ beds (~1/32 oz), 3,600 plants/1,000’ beds (1 oz), using 10” spacing, 3 rows/36” bed, 5’ center beds. 31M plants/acre (~2 oz), using 10” plant spacing. These specifications are meant to be general guidelines for the particular application as noted. They can be loosely applied across the board for lettuces/mixes found in this section.

Harvest

Cut lettuce holds best when harvested in the morning and cooled rapidly. For salad mix or baby leaf production, harvest individual leaves when they reach desired size, or cut evenly across the bed making sure to stay above the growing tip. For a continuous harvest, sow lettuce every 3 weeks.

Storage

Store just above freezing temperatures with 98% humidity.

Disease Info

Many lettuce diseases are best prevented by production practices that maximize airflow around heads to stimulate rapid drying. Many varieties have been bred to have disease resistance


Organic Non-GMO Outredgeous Red Romaine Lettuce

downloadOut-does all the reds, forming a loose teenage head with spectacular solid magenta color. Outredgeous is so red that botany students didn’t recognize it as lettuce when they saw it in Frank Morton’s breeding nursery. Makes an eye-catching statement in your premium salad mix! Great babyleaf variety • Upright habit. (Lactuca sativa)

Days to maturity: 30 days baby, 55 full size

Soil Requirements

Choose cool, well drained, loose soil with pH 6.2-6.8. Lettuce is sensitive to low pH. Use 50-75lbs Nitrogen/acre, ~150 Phosphorus and Potassium/acre. Sidedress with N 3-4 weeks after planting. With transplanting, use 2lbs/50 gallons starter fertilizer, 4-8oz per plant.

Position

Full sun to partial shade

Seeding Depth

1/8”, seeds require minimum amount of light for germination.

Seeding Rate

Babyleaf – ~60 seeds/ft, in 2” bands. Full size – ~3 seeds every 8-10”.

Plant Spacing

Babyleaf – continuous band. Full size – 8-12”

Row Spacing

Babyleaf – ¾” between bands, 16 rows/36” bed. Full size – 12-18” or 3 rows/36” bed, 5’ centers.

When to Sow

Lettuce can be seeded in the spring as soon as the soil can be worked. Days to maturity are from direct seeding in spring conditions, subtract 10-14 days if transplanting, subtract 7-10 days if planting in summer conditions, add 20 days if planting late summer-fall In certain areas, lettuce can be grown throughout the summer by choosing varieties which are heat tolerant; however, many lettuce varieties have difficulty germinating in soils above 75°F. Start transplants 3-4 weeks before setting out. Sow seeds 4 per inch in flats or small-cell plug trays, barely covering with fine soil. If sowing into flats, transplant 2 weeks later into plug trays, pots, or into another flat at 1-2” apart.

Other Considerations

Harden off seedlings by reducing water and temperature for 2-3 days before transplanting.

Frost Tolerants

Choose cold tolerant varieties to withstand light late-season frosts.

Drought Tolerants

Keep moisture levels even. Drought stress can cause bolting.

Heat Tolerants

Choose heat tolerant, bold-resistant varieties (such as Batavian types) for summer plantings.

Seed Specs

24,000 seeds/oz avg. M= 1,000, MM=1,000,000

Seeding Rate

Baby Leaf – 96M seeds/100’ bed (~ 4 oz), 960M seeds/1,000’ bed (2.5 lbs), 7.7MM seeds/acre (~20 lbs), using ~960 seeds/ft, 16 rows/bed, 36” beds, 6’ row centers. Full Size – 360 plants/100’ beds (~1/32 oz), 3,600 plants/1,000’ beds (1 oz), using 10” spacing, 3 rows/36” bed, 5’ center beds. 31M plants/acre (~2 oz), using 10” plant spacing. These specifications are meant to be general guidelines for the particular application as noted. They can be loosely applied across the board for lettuces/mixes found in this section.

Harvest

Cut lettuce holds best when harvested in the morning and cooled rapidly. For salad mix or baby leaf production, harvest individual leaves when they reach desired size, or cut evenly across the bed making sure to stay above the growing tip. For a continuous harvest, sow lettuce every 3 weeks.

Storage

Store just above freezing temperatures with 98% humidity.

Disease Info

Many lettuce diseases are best prevented by production practices that maximize airflow around heads to stimulate rapid drying. Many varieties have been bred to have disease resistance.