Broccoli

No known alternate names

Brassica oleracea var. italica – Brassicaceae

Description

Height – 18 inches
Spread – 15 to 24 inches
Root Depth – 18 to 36 inches
Hardiness – Hardy, can tolerate light frost
Exposure – Partial shade, needs 5 hours of sun each day

Planting

Depth – 1/4 to 1/2 inch
Extensive Spacing
  In Row – Spacing between plants within row in inches
  Between Rows – Spacing between rows in inches
Intensive Spacing – 1 per square foot

Direct Seed – Comments
  Spring – From 6 weeks before last expected frost to 2 weeks after last expected frost
  Fall – From 17 weeks before first expected frost to 14 weeks before first expected frost

Transplant – Comments
  Spring Inside – From 13 weeks before last expected frost to 5 weeks before last expected frost
  Spring Outside – From 6 weeks before last expected frost to 2 weeks after last expected frost
  Fall Inside – From 17 weeks before first expected frost to 14 weeks before first expected frost
  Fall Outside – From 10 weeks before first expected frost to 7 weeks before first expected frost

Succession – Two plantings in the spring, and two plantings in the summer

Requirements

Germination – 50°F to 65°F
Growth
  Soil – 65°F to 75°F
  Air – 60°F to 75°F (day), 50°F to 65°F (night)
pH – 6.0 to 7.5
Watering – Heavy, 1 1/2″ per week
Fertilizer – Heavy feeder, one main application of fertilizer and supplemental applications once every 2 weeks.

Duration

Germination – 3 to 10 days
Maturity – Direct seed, 16 weeks; Transplant, 9 weeks
Harvest – 2 weeks

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