:: In the first
stage, seeds are planted in prepared fields when the soil
temperature
has reached an acceptable level. The fields are then carefully
monitored and cared for throughout the germination and development of
the
seed into a plant. When the plants are deemed mature enough -
usually in
the Fall - the green leaves on top are cut off and the roots
are harvested
and transported back to the farm where further sorting
happens and the
roots
get deposited into crates. The crates of
roots are then placed into cold
storage and only taken out when needed
for the second stage of growth, which
is the actual forcing of the witloof. Almost all of the first stage is done
mechanically.
:: In the second stage, the roots are taken out of the cooler and
planted in a dark room. The roots are placed upright in a small
layer of water and are placed in an environment where there isn't any
light. The temperature, EC (electro-conductivity or nutrient
level), and humidity are controlled hydroponically for about 3 weeks.
During this time the roots grow tiny hairs, which supply the nutrients,
and white chicon starts "forcing" itself out of the head. After 3
weeks, the grower determines if the chicon is ready and the crop is
taken out. The chicons of heads are then carefully picked from the
roots and placed in boxes which are cooled down immediately and ready
for market. The picked roots are transported to local dairy farms
to be used as livestock feed.
The above processes, from the first seeding in the field until the last
harvesting indoor, takes a full 2 years. The process requires
soils with the
right condition, substantial field machinery, indoor
equipment, both
mechanical and
computer control, and grower skills.