Caring for celeriac is a simple matter. The plants
grow strongly in most conditions.
When they are first planted outside, water frequently if the
conditions are dry. Once they are established, watering should not
be necessary unless there is a prolonged drought. Don't feed
celeriac, the bulbous roots develop well enough if the initial soil
conditions were correct.
Keep the plants weed free, frequent hoeing is the best solution. In
July and August you may notice side shoots starting to grow from the
side of the now exposed root. Pinch these out as they emerge because
they do not contribute to increasing the size of the root.
By early September the roots will be swollen and visible above the
ground. Scoop up some soil surrounding the roots and cover the parts
which are above ground. This will keep the roots whiter because they
will not be exposed to sunlight.
Celeriac can be stored after harvest (see below) but the best roots are
from plants which have been freshly dug up. Celeriac will be ready for
harvest around September time. If your soil is free draining leave them
in the ground and harvest as required. A hard frost will damage them but
they will withstand a light frost. To protect them from frost a layer
of straw or hay laid around the base of the plants will provide some
If a hard frost does threaten then lift the plants. Cut off the top
foliage and store in boxes of slightly damp peat in a cool greenhouse or
shed. With the correct treatment you can be eating celeriac up until
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