Leaf castings are a wonderful way to add a natural and organic
element to your yard or gardens. They are also great for attracting
birds and other wildlife when filled with water, as well as a way to
highlight the beautiful veining and textures of leaves. My leaf castings
have been featured in the April 2009 Woman's Day Special
Publication called Gardening & Deck Design.
Good candidates for leaf castings are Elephant Ear, Hosta, Rhubarb,
Castor Bean, Gunnera, Caladium, Colocasia, Fig, Squash, Gourd,
Cucumber, Pumpkin, Coleus, and Perilla, to name a few. There is no
right or wrong leaf to use, that I am aware of. The only advice I can
offer is to look around in your yard for a large leaf that resembles a
round, oval or triangular shape that has a lot of veining on the
underside and some substance too it. You don't want a flimsy
delicate leaf that won't hold up to the concrete mixture. These make
good birdbaths because of their larger shape, but don't discount
smaller leaves with good veining. They can be taped together to form
a larger leaf or used as decorations for other projects.
Below are basic leaf casting directions designed for birdbaths, but,
like Hypertufa, there are many variations that will produce finer details
or changes that must be made to incorporate leaf castings into other
projects. I will describe whatever variations I make with each project.
Be sure to check out some of my favorite leaf casting links here.
element to your yard or gardens. They are also great for attracting
birds and other wildlife when filled with water, as well as a way to
highlight the beautiful veining and textures of leaves. My leaf castings
have been featured in the April 2009 Woman's Day Special
Publication called Gardening & Deck Design.
Good candidates for leaf castings are Elephant Ear, Hosta, Rhubarb,
Castor Bean, Gunnera, Caladium, Colocasia, Fig, Squash, Gourd,
Cucumber, Pumpkin, Coleus, and Perilla, to name a few. There is no
right or wrong leaf to use, that I am aware of. The only advice I can
offer is to look around in your yard for a large leaf that resembles a
round, oval or triangular shape that has a lot of veining on the
underside and some substance too it. You don't want a flimsy
delicate leaf that won't hold up to the concrete mixture. These make
good birdbaths because of their larger shape, but don't discount
smaller leaves with good veining. They can be taped together to form
a larger leaf or used as decorations for other projects.
Below are basic leaf casting directions designed for birdbaths, but,
like Hypertufa, there are many variations that will produce finer details
or changes that must be made to incorporate leaf castings into other
projects. I will describe whatever variations I make with each project.
Be sure to check out some of my favorite leaf casting links here.
Leaf Casting Birdbath
(Alternate use: Catch basin for water at the bottom of a
drain pipe)
Basic Materials Needed:
- Leaf
- Flat work surface
- Concrete Mix
- Sand or Fine Gravel
- Plastic Drop Cloth or Trash Bags
- Rubber Gloves
- Stiff Bristled Brush
- Concrete Sealer
- Disposable Foam Brush
- Dust Mask
- Shallow container for mixing concrete
- Water
- Shallow Box to contain sand (Optional)
- Concrete Dye (Optional)
- Acrylic Paint (Optional)
(Alternate use: Catch basin for water at the bottom of a
drain pipe)
Basic Materials Needed:
- Leaf
- Flat work surface
- Concrete Mix
- Sand or Fine Gravel
- Plastic Drop Cloth or Trash Bags
- Rubber Gloves
- Stiff Bristled Brush
- Concrete Sealer
- Disposable Foam Brush
- Dust Mask
- Shallow container for mixing concrete
- Water
- Shallow Box to contain sand (Optional)
- Concrete Dye (Optional)
- Acrylic Paint (Optional)
Choose a work area where the casting can sit and cure undisturbed for a week. Garages or covered patio areas work well. This
can be a messy job, so wear old clothes or an apron to protect your clothing and always were rubber gloves when working with
concrete because the Portland cement in the concrete is caustic and can burn your skin. If you plan on doing this project outside,
choose a shady location and a time when it won't rain for at least two days. If the outside location is covered and partially
protected from the elements, that is good too and rain is not much of a factor.
Step 1
Choose your leaf. Look for nice veining with no rips or insect marks. Cut the stem off completely so it does not get stuck in
your concrete. Using fresh leaves is preferable, but some leaves can be kept hydrated for a few hours when their stems are kept
in a glass of water.
Step 2
Prepare your work surface by laying a piece of plastic on the table and pile up some sand to make a nice mound. You can also
do this inside a box if it will be easier for you to contain the sand. Wet the mound slightly with water from a spray bottle or a fine
mist from the hose. You only want the sand damp enough to stick together, kind of like when you were making sand castles as a
kid. You can pre-moisten the sand if that will be easier for you. The shape of the mound will determine the inside slope of your
bird bath, so keep that in mind when forming its shape. The size of the mound should be slightly larger than the leaf you are using.
Lay a piece of plastic on top of the mound to keep the sand from mixing with your concrete mixture.
Step 3
Mix the concrete and water a little at a time until you get a brownie batter-like consistency. You do not want the mixture to be
too soupy as the slurry can get under the leaf and make for an unattractive leaf casting. If the mixture is too dry,you won't see the
vein details of the leaf. You want the mixture to sit on the mound of sand and not slide off.
Step 4
Place your leaf on top of the plastic sheeting that is covering the mound of sand. Make sure the veiny side is turned up and that it
is centered on the mound of sand. Again, make sure that you cut the stem off the leaf. Start pressing concrete to the center of
the leaf making it about 1"-1.5" thick, tapering to about 1/2"-3/4" thick at the edges. Keep adding concrete to the leaf until you
just reach the edge.
can be a messy job, so wear old clothes or an apron to protect your clothing and always were rubber gloves when working with
concrete because the Portland cement in the concrete is caustic and can burn your skin. If you plan on doing this project outside,
choose a shady location and a time when it won't rain for at least two days. If the outside location is covered and partially
protected from the elements, that is good too and rain is not much of a factor.
Step 1
Choose your leaf. Look for nice veining with no rips or insect marks. Cut the stem off completely so it does not get stuck in
your concrete. Using fresh leaves is preferable, but some leaves can be kept hydrated for a few hours when their stems are kept
in a glass of water.
Step 2
Prepare your work surface by laying a piece of plastic on the table and pile up some sand to make a nice mound. You can also
do this inside a box if it will be easier for you to contain the sand. Wet the mound slightly with water from a spray bottle or a fine
mist from the hose. You only want the sand damp enough to stick together, kind of like when you were making sand castles as a
kid. You can pre-moisten the sand if that will be easier for you. The shape of the mound will determine the inside slope of your
bird bath, so keep that in mind when forming its shape. The size of the mound should be slightly larger than the leaf you are using.
Lay a piece of plastic on top of the mound to keep the sand from mixing with your concrete mixture.
Step 3
Mix the concrete and water a little at a time until you get a brownie batter-like consistency. You do not want the mixture to be
too soupy as the slurry can get under the leaf and make for an unattractive leaf casting. If the mixture is too dry,you won't see the
vein details of the leaf. You want the mixture to sit on the mound of sand and not slide off.
Step 4
Place your leaf on top of the plastic sheeting that is covering the mound of sand. Make sure the veiny side is turned up and that it
is centered on the mound of sand. Again, make sure that you cut the stem off the leaf. Start pressing concrete to the center of
the leaf making it about 1"-1.5" thick, tapering to about 1/2"-3/4" thick at the edges. Keep adding concrete to the leaf until you
just reach the edge.
Step 5
Now that the leaf is completely covered you want to
gently pat the concrete to pack it down and to make it
smooth so that there are no air bubbles on the veiny
side. Be careful that the concrete doesn't slide down
your leaf. If it's not too wet, this shouldn't be a
problem. You can always hold your hand against the
edge to help keep it from sliding, if this is a problem.
Now that the leaf is completely covered you want to
gently pat the concrete to pack it down and to make it
smooth so that there are no air bubbles on the veiny
side. Be careful that the concrete doesn't slide down
your leaf. If it's not too wet, this shouldn't be a
problem. You can always hold your hand against the
edge to help keep it from sliding, if this is a problem.
Step 6 - Optional pedestal for birdbath
At this point, you can build up the middle even further to create a pedestal so that the birdbath will sit up off the ground a bit. It is
not necessary, just depends on where and how you want to place it in your garden. The pedestal should be at least half the size of
the leaf width and it can be any height. Mine are only about 2"-3" tall. Once you have the desired size, take a board and flatten
the top. You can use a level or just eye ball it to see if it appears level. Where you place it in the garden may not be level, so
don't go crazy trying to get this level unless you plan on putting it someplace where this will be important.
Step 7 - Optional Hanger
If you don't want a pedestal on the bottom, you can add a hanger at this point in case you'd rather hang your leaf casting on a
fence or garden shed. To do that, take a piece of heavy wire, form into a loop and bury the ends slightly in the mixture, leaving
the loop exposed. Wire coat hangers work well for this also. You may also not want to have the leaf cupped quite as much as
when you would be using it as a birdbath, so modify the mound of sand before beginning your casting.
Step 8
Place a plastic bag loosely on top of the leaf casting and do not move it for at least 48 hours. This is very important to avoid
breakage. The air temperature should be on the cool side, but not below 40 degrees. If you are experiencing hot temperatures,
make sure you prepared it in the shade and it can be misted a few times a day if you think it’s curing too fast, but the bag alone
should keep it from curing too fast.
Step 9
Once the casting has cured for 48 hours, you can remove the plastic sheeting and work your fingers under the leaf so that you can
flip the birdbath over to its rightful position. Peal the leaf off the concrete. It should come off pretty easily, but if it doesn't let it sit
a day or two longer. If it still won't come off, you can use a wire brush to get it off after it has sat for 7 days, just be careful you
don't rub off the pattern you have made on your concrete or chip the edges. The edges can be smoothed out by using a metal file
or rock. Once it has sat for more than 72 hours, sanding the edges will become more difficult, so I like to perfect the shape
before it has completely cured.
Step 10 - Optional Paint or Stains
After 72 hours you can apply paints or stains to
your project, as is the example on the right.
Check the label instructions of your paint or stain
to see if it requires the concrete to cure longer. I use
Patio Paints for most of my castings and usually wait
a week to make sure it is fully hardened to help avoid
breakage.
Step 11
After 72 hours the birdbath can be sealed with a concrete sealer. These sealers are clear and shouldn't change the color of your
birdbath. Two coats should do it, but follow the directions on the sealer that you are using. Let dry for at least 24 hours. If you
are using an outdoor paint, sealing may not be necessary. Check the label on your paints for further instructions.
At this point, you can build up the middle even further to create a pedestal so that the birdbath will sit up off the ground a bit. It is
not necessary, just depends on where and how you want to place it in your garden. The pedestal should be at least half the size of
the leaf width and it can be any height. Mine are only about 2"-3" tall. Once you have the desired size, take a board and flatten
the top. You can use a level or just eye ball it to see if it appears level. Where you place it in the garden may not be level, so
don't go crazy trying to get this level unless you plan on putting it someplace where this will be important.
Step 7 - Optional Hanger
If you don't want a pedestal on the bottom, you can add a hanger at this point in case you'd rather hang your leaf casting on a
fence or garden shed. To do that, take a piece of heavy wire, form into a loop and bury the ends slightly in the mixture, leaving
the loop exposed. Wire coat hangers work well for this also. You may also not want to have the leaf cupped quite as much as
when you would be using it as a birdbath, so modify the mound of sand before beginning your casting.
Step 8
Place a plastic bag loosely on top of the leaf casting and do not move it for at least 48 hours. This is very important to avoid
breakage. The air temperature should be on the cool side, but not below 40 degrees. If you are experiencing hot temperatures,
make sure you prepared it in the shade and it can be misted a few times a day if you think it’s curing too fast, but the bag alone
should keep it from curing too fast.
Step 9
Once the casting has cured for 48 hours, you can remove the plastic sheeting and work your fingers under the leaf so that you can
flip the birdbath over to its rightful position. Peal the leaf off the concrete. It should come off pretty easily, but if it doesn't let it sit
a day or two longer. If it still won't come off, you can use a wire brush to get it off after it has sat for 7 days, just be careful you
don't rub off the pattern you have made on your concrete or chip the edges. The edges can be smoothed out by using a metal file
or rock. Once it has sat for more than 72 hours, sanding the edges will become more difficult, so I like to perfect the shape
before it has completely cured.
Step 10 - Optional Paint or Stains
After 72 hours you can apply paints or stains to
your project, as is the example on the right.
Check the label instructions of your paint or stain
to see if it requires the concrete to cure longer. I use
Patio Paints for most of my castings and usually wait
a week to make sure it is fully hardened to help avoid
breakage.
Step 11
After 72 hours the birdbath can be sealed with a concrete sealer. These sealers are clear and shouldn't change the color of your
birdbath. Two coats should do it, but follow the directions on the sealer that you are using. Let dry for at least 24 hours. If you
are using an outdoor paint, sealing may not be necessary. Check the label on your paints for further instructions.
| Concrete Leaf Castings |
Alternate Recipe for Finer Looking Castings
3 Parts Sand, 1 Part Portland Cement, and an equal mixture of water and fortifier (bonding agent)
Add water until the mixture feels like thick brownie batter. Mix well. Let mixture stand 5-10 minutes before applying to the leaf.
3 Parts Sand, 1 Part Portland Cement, and an equal mixture of water and fortifier (bonding agent)
Add water until the mixture feels like thick brownie batter. Mix well. Let mixture stand 5-10 minutes before applying to the leaf.
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| Last Updated on March 6, 2010 |
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Additional Tips
If your birdbath won't hold water, check to see if it
cracked during the curing process. Cracks can occur
if the concrete cures too fast on a hot sunny day or it
was moved too soon. If there are no visible cracks,
the concrete is probably still absorbing too much
water because there are too many air pockets. There
are several ways this can be fixed.
Option 1 - Fixing a leaky birdbath
Mix a little Portland cement and water to create a
slurry and coat the back of the birdbath. You may
need to do two coats.
Option 2 - Fixing a leaky birdbath
Mix a little Portland cement and a white PVA glue
(such as Weldbond or Elmer's) and coat the back of
the birdbath. Make sure the glue dries clear.
Option 3 - Fixing a leaky birdbath
Use a concrete sealer designed for leaky basements
on the back of your birdbath.
If your birdbath won't hold water, check to see if it
cracked during the curing process. Cracks can occur
if the concrete cures too fast on a hot sunny day or it
was moved too soon. If there are no visible cracks,
the concrete is probably still absorbing too much
water because there are too many air pockets. There
are several ways this can be fixed.
Option 1 - Fixing a leaky birdbath
Mix a little Portland cement and water to create a
slurry and coat the back of the birdbath. You may
need to do two coats.
Option 2 - Fixing a leaky birdbath
Mix a little Portland cement and a white PVA glue
(such as Weldbond or Elmer's) and coat the back of
the birdbath. Make sure the glue dries clear.
Option 3 - Fixing a leaky birdbath
Use a concrete sealer designed for leaky basements
on the back of your birdbath.
Option 4 - Fixing a leaky birdbath
If you plan on painting your birdbath, this will usually eliminate the problem as well. You'll want to protect your paint job with an
outdoor sealer or use Patio Paints instead of regular acrylics or latex paints.
Your concrete birdbath will be able to remain outside all year round, however, if you have heavy snow falls or below freezing
temperatures, you may want to turn your birdbath on it's side or upside down so it doesn't hold water.
I prefer to let my leaf castings sit for 30 days before use. This ensures that all the paints, sealers, and the Portland Cement have
fully cured. Curing is essential for a long lasting project.
If you plan on painting your birdbath, this will usually eliminate the problem as well. You'll want to protect your paint job with an
outdoor sealer or use Patio Paints instead of regular acrylics or latex paints.
Your concrete birdbath will be able to remain outside all year round, however, if you have heavy snow falls or below freezing
temperatures, you may want to turn your birdbath on it's side or upside down so it doesn't hold water.
I prefer to let my leaf castings sit for 30 days before use. This ensures that all the paints, sealers, and the Portland Cement have
fully cured. Curing is essential for a long lasting project.
Here is an adorable leaf casting I made from a large hosta leaf. This project will
be featured in an upcoming issue of Birds & Blooms magazine. When I have
the exact issue, I will let you all know on our blog.
be featured in an upcoming issue of Birds & Blooms magazine. When I have
the exact issue, I will let you all know on our blog.
| Reader to view it. |
