Horseradish is adapted to the north-temperate regions of the
United States, but not to the South, except possibly in the high
altitudes. Any good soil, except possibly the lightest sands and
heaviest clays, will grow horseradish, but it does best on a deep,
rich, moist loam that is well supplied with organic matter. Avoid
shallow soil; it produces rough, prongy roots.
Mix organic matter with the soil a few months before the plants
or cuttings are set. Some fertilizer may be used at the time of
planting and more during the subsequent seasons. A top dressing of
organic matter each spring is advisable.
Horseradish is propagated either by crowns or by root cuttings.
In propagating by crowns a portion of an old plant consisting of a
piece of root and crown buds is merely lifted and planted in a new
place. Root cuttings are pieces of older roots 6 to 8 inches long
and of the thickness of a lead pencil.
They may be saved when preparing the larger roots for grating,
or they may be purchased from seeds-people. A trench 4 or 5 inches
deep is opened with a hoe and the root cuttings are placed at an
angle with their tops near the surface of the ground. Plants from
these cuttings usually make good roots the first year. As a rule,
the plants in the home garden are allowed to grow from year to
year, and portions of the roots are removed as needed.
Pieces of roots and crowns remaining in the soil are usually
sufficient to reestablish the plants. There is very little choice
in the matter of varieties of horseradish. Be sure, however, to
obtain good healthy planting stock of a strain that is giving good
results in the area where it is being grown.
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