Double Digging
A method of deep
cultivation
by digging out the top
spade
length of
soil
,
forking
over and
amending
the lower level of soil, and returning the
topsoil
to the hole on top of the cultivated lower level.
Articles
Steps for double digging -
Ohio State University Horticultural Crop Science
Double-Digging -
HGTV Gardening by the Yard
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