The sprouts form where a leaf grows out of the stalk. They
appear on the bottom of the stalk first. To encourage early
sprouts, break off all the lower branches to a height of about 6 or
8 inches as soon as you see a sprout begin to form. This will
encourage taller plants, and therefore more sprouts, and also allow
the plant to put more energy into the developing sprouts.
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Climate
Brussels sprouts need a cool growing season, and is not suitable
for subtropical climates. Ideal temperatures are not more than 77
degrees during the day and not less than 50 degrees at night.
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Location
Plant in a well drained, sunny location. Sandy soils may produce
leafy vegetables with no hearts.
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Cultivation
Soil should be of a pH between 6.5 and 7.5. Prepare the bed with
manures and compost and provide
extra nitrogen supplement if the soil is sandy. Hill the soil
around plants during the growing period to prevent wind damage. If
you prefer your sprouts to ripen all at the same time, break off
the terminal bud when the plant is 16 inches tall.
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Planting
Sow seeds, well spaced, in seed trays or flats. Transplant
seedlings when 4 inches tall during the summer to autumn in cooler
climates and during summer to early autumn in warmer zones.
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Watering
The plant needs a great deal of water and cool moist air to
encourage growth. Ease off on watering a week or two before
harvesting.
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Fertilizing
Work in plenty of manure. Poultry manure is especially good. Add
extra nitrogen at picking times and potash if the soil has
leached.
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Pests and Diseases
See Brassica
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Harvesting
Harvest period is late summer through to spring providing the
weather is not too hot in which case the harvest time will be
shorter. Mature sprouts are harvested frequently, especially in
warmer zones, and are picked before they burst, starting at the
bottom of the stem where mature sprouts first develop.
