|
Amendment |
Uses |
Comments |
|
Compost |
Great soil
amendment for both
clay and sandy soil.
Improves drainage, holds water and
nutrients. |
May be made
in the gardener's backyard. Many communities
have large scale compost programs which also
sell compost to homeowners. |
Leaves |
Amendment
for both clay and sandy soil. Improves
drainage, holds water and nutrients. |
Same as
compost except takes much longer to
breakdown in the soil especially in clay.
|
Leaf Mold |
Same as leaves |
Partially decomposed (composted) leaves
which add more texture to soils that completed compost. |
Manures |
Same as compost but with a
little more nutrient content. |
Fresh, uncomposted manures need to be
avoided due to their high salts content and odor.
Composted manures are best to use. |
Michigan peat |
Improves both clay and sandy soils if used
in large quantities |
Inexpensive, but large quantities are needed |
Redwood compost |
Best
for clay soils, with some improvement of
sandy soils. |
Inexpensive, however, does not hold water or
nutrients well. |
Sawdust |
Improves clay soils. |
Very
inexpensive, however, breaks down so rapidly
that
nitrogen deficiencies may develop
despite the addition of nitrogen. Avoid
using only walnut sawdust. |
Sphagnum peat moss |
Excellent for clay or sandy soils high water
and nutrient capacity. |
Expensive, but less is required hard to wet
when fully dry acidifies soil. |
Sewage Treatment Sludge |
Improves both sandy and clay soils adds some
nutrients. |
Inexpensive may have a high ash content and
a strong odor do not use in the vegetable
garden. Common commercial product is
Milorganite from the Milwaukee, WI sewage
treatment plant. |
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