volcanic action at or near the earth’s surface, usually extruded as lava. Most volcanic rocks used in landscaping are very porous
and may have secondary weathering and moss growth.
Moreover, Volcanic rock also contains silica of more than 15 percents, which is necessary for plant’s growth. Silica works with other minerals and facilitates plant’s absorption of nutrients. Therefore, it improves plants’ growth and immunity against diseases and insects. Soil’s acidity or Alkalinity or ph Value affect plants’ growth and regulate overall nutrients content; where too much nutrients will harm the plants while too little will cause nutrient deficiency in plants.
Color: Red Black White Yellow
Size: Fine Medium Coarse Large
1-3mm 3-6/3-5mm, 6-9/5-10mm, 10-20mm, 10-30mm/1-3cm, 5-10cm etc.
