| Gardening - Hypertufa Troughs |
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| Index: |
| Building a Hypertufa Trough and Pot |
| The following instructions will produce enough Hypertufa to make a 12" x 14" x 6" rectangular trough, or two 12" x 12" pots: |
| Using a 2 quart measuring container: |
| 2 containers Perlite |
| 1½ containers Peat moss |
| 2 containers (dry) Portland cement |
| ½ container Coarse Sand |
| 1 large handful Fibermesh |
| 1½ – 2 containers Water |
Mix the Perlite and sifted peat moss together in a large container or wheelbarrow.
Add the other dry ingredients and mix together thoroughly before adding any water.
Add the other dry ingredients and mix together thoroughly before adding any water.
Gradually add up to 2 containers of water, mixing thoroughly from the bottom of the
mixing container. The mixture should adhere to itself, but should not "ooze" water.
Add the last half container water very gradually until the mix is just workable. Do not
use more than 2 containers of water.
mixing container. The mixture should adhere to itself, but should not "ooze" water.
Add the last half container water very gradually until the mix is just workable. Do not
use more than 2 containers of water.
| Building the hypertufa trough: |
Cover the bottom of a plastic bin or bowl with a large trash bag. Secure with a large
rubber band. Place upside down on a 36" x 36" piece of plywood. OR - place a large
plastic flower pot in the bottom of a plastic bag - roll the top of the bag down below
the top edge of the pot. Have a smaller pot ready to place inside the larger one,
leaving about an inch or more of clearance between them.
rubber band. Place upside down on a 36" x 36" piece of plywood. OR - place a large
plastic flower pot in the bottom of a plastic bag - roll the top of the bag down below
the top edge of the pot. Have a smaller pot ready to place inside the larger one,
leaving about an inch or more of clearance between them.
Build the mix around the base of the container and gradually build up the sides and
over the top. Keep the depth even all over (about 1½ inches) Use a thin "test" dowel to
check the thickness (experience has shown that particular attention needs to be paid
to the corners - use the measuring stick!!). Keep the base as flat and smooth as you
can. Smooth the surface with wet fingers but do not overdo with the water. Once
covered with the mix, place dowels upright in base to form drainage holes. Cover the
entire construction with another trash bag to keep moist as it cures.
over the top. Keep the depth even all over (about 1½ inches) Use a thin "test" dowel to
check the thickness (experience has shown that particular attention needs to be paid
to the corners - use the measuring stick!!). Keep the base as flat and smooth as you
can. Smooth the surface with wet fingers but do not overdo with the water. Once
covered with the mix, place dowels upright in base to form drainage holes. Cover the
entire construction with another trash bag to keep moist as it cures.
After three to four days, remove the container from the mold and the dowels from
the drainage holes. Make sure the drainage holes are clear. Use a wire brush to smooth
the surface and the rim, and tools (sharp knife/chisel/saw) to carve away obvious
blemishes.
the drainage holes. Make sure the drainage holes are clear. Use a wire brush to smooth
the surface and the rim, and tools (sharp knife/chisel/saw) to carve away obvious
blemishes.
Treat with respect at this stage! Re-cover with plastic - allowing the Hypertufa to
"cure" slowly creates the strongest troughs. Keep wrapped in plastic for a month at
room temperature. Allow to dry completely while exposed to the elements (hose it
down if it doesn't rain for a few days) then use a blow torch gently to remove any
Fibermesh "whiskers."
"cure" slowly creates the strongest troughs. Keep wrapped in plastic for a month at
room temperature. Allow to dry completely while exposed to the elements (hose it
down if it doesn't rain for a few days) then use a blow torch gently to remove any
Fibermesh "whiskers."
Note – After your trough has cured: The slower and longer your trough is allowed to dry, the
stronger it will be. Allow the trough to "weather" outdoors (hose it off if it doesn't rain fairly
frequently) for several months, if possible, to leach out free lime; or temporarily block up the
drainage holes and fill the trough with a wine-colored solution of Potassium Permanganate for 24
hrs to neutralize the lime (½ oz. of crystals to 3 gallons water). Afterwards lightly scrub the inside
with a wire brush. Use the waiting time to assemble suitable plants.
stronger it will be. Allow the trough to "weather" outdoors (hose it off if it doesn't rain fairly
frequently) for several months, if possible, to leach out free lime; or temporarily block up the
drainage holes and fill the trough with a wine-colored solution of Potassium Permanganate for 24
hrs to neutralize the lime (½ oz. of crystals to 3 gallons water). Afterwards lightly scrub the inside
with a wire brush. Use the waiting time to assemble suitable plants.
| Building the pots: |
After placing the large pot in a large plastic bag, press a 1 1/2" layer of the mix firmly
into the bottom of the pot. Place the smaller pot inside and gradually add mix between
the pots, pressing it firmly into place as you fill and working it into the space equally as
you go. Fill to the brim and smooth with wet fingers. Place a large dowel in the base for
drainage. Draw the plastic bag up over the pot(s) and tuck it down inside to enclose the
pot(s) completely while the mix cures.
into the bottom of the pot. Place the smaller pot inside and gradually add mix between
the pots, pressing it firmly into place as you fill and working it into the space equally as
you go. Fill to the brim and smooth with wet fingers. Place a large dowel in the base for
drainage. Draw the plastic bag up over the pot(s) and tuck it down inside to enclose the
pot(s) completely while the mix cures.
Allow to cure for three days. Carefully remove the Hypertufa pot from the molds.
Brush with a wire brush to smooth the surface and the rim. Use tools (sharp
knife/chisel/saw) to carve away obvious blemishes. Remember, treat it with respect -
it can easily break at this stage! Continue to cure slowly under plastic for a month.
Allow to air dry completely then use a blowtorch gently to remove any Fibermesh
"whiskers."
Brush with a wire brush to smooth the surface and the rim. Use tools (sharp
knife/chisel/saw) to carve away obvious blemishes. Remember, treat it with respect -
it can easily break at this stage! Continue to cure slowly under plastic for a month.
Allow to air dry completely then use a blowtorch gently to remove any Fibermesh
"whiskers."
