Plants on Lava Rock? This may sound unbelievable but here are some of the best ones that you can display in a different and quirky way!
If you are bored of growing your green friends in pots and want a different way to showcase them, then you can try Plants on Lava Rock. Sounds weird? It’s not! Read ahead!
Check out awesome indoor garden ideas to steal from Japan here
Growing Plants on Lava Rock
Lava rocks are mined from ancient volcanos. They are a long-lasting, primarily permanent form of mulch that gives support, offer moisture and nutrition to plants. These rocks are porous and thus have a great water-retaining capacity and good drainage.
According to the Guardian, volcanic rock is porous and can taper water up to 20-30 cm. It is also quite absorbent and works amazingly well as growing media for small plants.
This technique is also commercially marketed by a Dutch Grower as Life On Lava – they have successfully grown ficus, Schefflera, and ferns on it.
How to Grow Plants on Lava Rock
- You can easily drill or chisel into porous forms of lava rock for the plant to fit in.
- If you have a huge piece of lava rock, break it into pieces with the help of a hammer.
- Rinse them thoroughly with tap water.
- Insert the plant or cuttings in the hole or tie it with a rubber band on lava rock. Put the rock in a shallow tray and fill 2/3 water.
- You can try one more easy method – take a clean pot, and fill it half with lava rock pieces. Now place the cuttings and put more rock pieces covering the roots. Water well.
- Washing the rocks is necessary as it clears the residue.
- You can use plants with shallow roots as they can be grown easily in them.
Lava Rock Plant Care
Water: Do not allow the lava to dry out and always keep some water in the tray or container. Avoid using tap water as it contains lime, which can deteriorate the stone. You can use rain, purified, river, or lake water. If you are using tap water, then allow it to sit overnight before use.
Light: Lava rock prefers bright light. Do not place it in direct afternoon sun during the summer months.
Fertilizer: You don’t need to feed the plant immediately after planting it into lava rock as the plant receives nutrition from the stone itself.
Best Plants for Lava Rock
Epiphytes and plants that do well in poor soil are the best to grow in lava rocks. Here are our top picks!
Botanical Name: Asplenium
2. Staghorn Fern
Botanical Name: Platycerium
Botanical Name: Orchidaceae
4. Air Plant
Botanical Name: Tillandsia
5. Kangaroo Paw Fern
Botanical Name: Microsorum diversifolium
6. Dwarf Umbrella Tree
Botanical Name: Schefflera arboricola
7. Rabbit’s-Foot Fern
Botanical Name: Davallia fejeensis
Botanical Name: Anthurium andraeanum
Small species such as Echeveria, Euphorbia, and Sedum.