Hypertufas are synthetic rocks that contain various aggregates that is put together together using Portland cement. It’s look is inspired by tufa, a porous rock composed of calcium carbonate. Since they are light-weight and porous, they are very good for plant development; hence hypertufas are usually made as garden ornaments. They are also durable and have the ability to withstand intense winter temperatures, which makes them more preferrable than concrete.
One of the most typical types of hypertufa is a planter, since you can create sturdy ornamental pots with these. You also only need simple molds for a hypertufa planter so most starters are recommended to create them first. For planter molds, you can utilize buckets, styrofoam ice chests, plastics or metal containers, pots, cardboard or wooden boxes and other objects that has a structure that can carry plants. Just be sure to add releasing agents to your molds, such as plastics, garbage bags, and oil lubricants, before applying the hypertufa mixture to them.
To produce your own hypertufa planter, first you should prepare your mixture by mixing up 1 1/2 parts peat moss, 1 1/2 parts perlite, and 1 part Portland cement. Slowly add water while mixing up the ingredients, until you attain a moldable consistency. Then using a trowel, transfer your mixture to the mold of the planter that you prepared. Pound the mixture in the mold so that it is packed, ensuring its durability. Also, because you are going to put plants in what you are building, keep in mind to add drainage holes at the bottom by sticking dowels or branches. Make sure that the mixture does not trickle back into the opening that you created.
After filling your mold, cover it up with a trash bag and allow it to sit for around one to three days, depending on the size of your planter. As soon as it is hard enough that you cannot make an indentation with your finger, you may now get rid of the mold off your hypertufa. You can even include additional touches to your planter by sculpting using wire brush. Put it back to the garbage bag and let it sit once again for more than 3 weeks, once in a while misting it. When it already makes a hollow knock when you tap it, your hypertufa planter is already completely cured and dried.
Keep in mind that your hypertufa planter has a large amount of lime in it that is unhealthy for plants. Make use of water and vinegar to leach the lime off the planter for about 10 days just before planting anything into it.