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Tips for Growing Succulents in Lava Rocks


Lava rocks are any form of rock that is created when lava or magma erupts through the earth's surface and cools. As such, there are many types of lava rock such as pumice, basalt, obsidian or feather rock. Any of these rocks are called igneous rocks and have very glass-like composition which shatters into razor sharp shards. Feather rock is lighter than most igneous rocks, although not as light as pumice, which almost has no weight. It is useful in landscaping as a hardscape item, feather rock planter or simple display.

Porous forms of lava rock are relatively easy to drill or chisel into. You can make dimples or depressions or simply drill holes for smaller plants. Plants in lava rock that work well are succulents, air plants and some grasses.

One of the easiest forms of plants that love to grow in lava rock planters are the succulents. You can make a fascinating display filled with a variety of form, color and texture by using little succulents. Sempervivum, Echeveria, Crassula, Sedum and many others will add their appeal to the distinctive look that growing plants in volcanic rocks produces.

Succulents have shallow root bases and install easily in depressions in the rock. Use thick gloves when handling feather rock or other lava rocks. The edges are extremely sharp. Use eye protection if you are drilling or chiseling into the material.

Once you have the hole or dimple you wish, press potting soil into the bottom and then add the succulent. Firm the soil around the plant to anchor it. Follow general plant care for the variety of succulents you installed. In colder climes, use this method to make lava rock houseplants, permanent planters with matchless appeal.



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