• How to make Hypertufa Troughs

    by  • August 6, 2011 • Garden, Garden art, How to, Projects, Something different • 8 Comments

    What are hypertufa troughs? Hypertufa (pronounced hyper-toofa) is a mixture of peat moss, perlite, cement and water.

    Old stone watering troughs in England could be found in farmer’s fields, sometimes built into stone walls to provide water for two fields of livestock.

    Traditional Stone Water Trough  in Britain

    Traditional Stone Water Trough in Britain, Wikipedia Commons Photographer Roger Nunn

    These troughs are usually one-of-a-kind, and very rare and desirable to alpine gardeners and plant collectors and are very expensive and heavy, as well.

    There is a natural volcanic rock called tufa, which has also been used by gardeners. There are a few natural deposits found around the world, some in Britain, some in North America and various other areas. In the 1800’s, English gardeners found that by mixing certain ingredients they could make a light weight version of stone troughs. In time, hypertufa will develop the look of weathered stone.

    For those who like miniature plants which often get lost in a garden, making your own troughs, and really, any shaped stone-like container, is easy and fun! I like growing succulents and other small plants and after hearing about hypertufa long, long ago, have always wanted to try it.

    So,… this past month my friend Cheryl and I decided to give ourselves an assignment: to give a workshop to our garden club! O…K…!

    Mix cement, peat & perlite

    Cheryl measures out dry ingredients in a galvanized container. Mix cement, peat & perlite before adding the water.

    We used a 1 quart measure. 4 scoops of each, cement, peat moss and perlite. That made two small troughs. We made two batches and four troughs in three hours. The first hour was running around finding equipment and setting up.

    Finding the Materials
    It was a bit daunting just to buy the materials.  The peat moss was easy, available in big bales at our local hardware store.  the Portland cement, only available in 93 lb bags at the lumber store was never touched by me until Tractor Man hefted it down the steps to our old picnic table work area. the big bag of perlite was only available at a big box store and was picked up next time we went to tot he valley. everything else we scrambled for the day before our project.

    Dry mix is very lightweight

    The dry mix is pretty lightweight and almost fluffy in texture

    The mix is not sticky and it’s easy to clean up. Surprised me!

    We prepared the molds, plastic containers, or corrugated boxes,  lining each with a dry cleaning bag. Add water to the mix a little at a time until it feels like mudpies, or Brownie batter and holds together in a ball when you squeeze it.

    Mixture should form a ball

    Mixture should form a ball....looks like we're playing, huh?

    Supplies

    • mixing tub
    • container for measuring
    • peat moss
    • perlite
    • Portland cement
    • dust mask
    • rubber gloves
    • trowel
    • plastic or canvas drop cloth
    • container for a mold
    • Dry cleaning bags
    • *Optional
      Hardware cloth or wire screen ‘sifter’ for the peat
    Press firmly and use sticks for drain holes

    Press firmly and use sticks for drain holes

    The sides are 1 1/2” thick. While we did this one, we had two other molds ready and waiting.

    Press firmly and don’t jostle the box or the trough will crumble. DON’T use shoe boxes like we did with this one. The corrugated shown above is better. We wrapped the shoebox with duct tape and it still wobbled out of shape. The bottom will be square and the top round, but Cheryl said she liked it that way.

    Cure in a plastic bag

    Cure in a plastic bag

    Carefully lift box or container into a plastic trash bag, mist with water and seal loosely. For one day leave the trough in the bag and mist a couple times so it dries slowly. Do not move or they will crumble.

    IMPORTANT: The next day, take out the sticks used to make drain holes.  It’s much harder to do so afterward.

    After a week, I cut away the box molds and carefully let them dry further without the plastic bags.

    Recipe

    • 1 part Portland cement
    • 1 parts sphagnum peat moss
    • 1 parts perlite

    Five Steps

    • Mix Ingredients with water
    • Mold the trough
    • Wrap in plastic
    • Un-mold and cure
    • Soak to leach out lime

    Day Two-  Unmolding, second batch and planting Two weeks later…

    This day, we planned to unmold the troughs we made, make another batch with a slightly different mix and plant some as examples to show at our demonstration in two days.

    We had used dry cleaning bags to line the plastic containers, so when unmolding,  just gathered up the corners and lifted the trough right out. They were fragile.

    We carefully soaked the troughs in a wheelbarrow full of water for three days before planting to leach out the lime from the cement. Guess plants don’t like too much lime. Note…we skipped this step for any other troughs.  You can do it, or not,…we planted our unsoaked troughs and they do fine.

    The fun part, planting

    The fun part, planting

    Then came the fun part,…planting. While planting we moved the troughs by sliding them on the cardboard. We decided to use succulents, but think miniature bulbs would look great in these!

    Finished but still drying

    Finished but still drying

    Thanks for viewing our fun experience! Tomorrow I’ll post about our demonstration.

    Notes:  Want to see lots of Hypertufa troughs and containers? Check out Google Images for Hypertufa,… it’s amazing what can be done.

    Share and Enjoy

    About

    Sue Langley, a passionate gardener and photographer lives and gardens with her husband and Corgi, Maggie on 7 acres just south of Yosemite, Zone 7 at 3000 feet. She also manages the Flea Market Gardening Facebook page and website.

    8 Responses to How to make Hypertufa Troughs

    1. August 6, 2011 at 10:07 pm

      That stuff looks and sounds fantastic! I must try it someday. Thanks for sharing the idea.

    2. August 7, 2011 at 2:24 pm

      Thanks, Gayle, I hope you do. It took us actually going out to buy the three ingredients and then setting up a good work space for us to actually do this. I don’t know why I waited so long!

    3. August 12, 2011 at 11:40 am

      That looks like fun to do and your end results were really lovely, Sue! I have heard of hypertufa but never seen anything made from it. I am impressed and think they’ll look even nicer once weathered and aged.

    4. December 7, 2011 at 5:25 am

      Great instructions — thanks to Desiree’s comment on Alison Conliffe’s Bonney Lassie blog for sending me here!

    5. December 7, 2011 at 8:13 am

      Thanks, Helen. My hypertufa making friend and I have gotten together a couple times a month to make more. So fun!

    6. Pam Padgett
      February 8, 2012 at 9:45 am

      Can you use other things for molds like pots or bowls?

      • February 8, 2012 at 10:09 am

        Yes, you can, Pam! Anything. We use plastic hospital tubs, popcorn tubs. nursery pots, plastic totes and a colander! We also made stepping stones in plastic ground cover trays from the plant nursery. Just line everything with dry cleaning bags or other thin plastic to easily unmold.

    7. susan smith
      August 2, 2013 at 3:54 pm

      Your instructions are great but I have a question.

      I would like to make a trough for a fountain and am wondering if I need to line the trough with plastic or will it work as a fountain without a further preparation.

      Thanks,

      Sue

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