Red Scoria; fine grade lava rock

$24.97

Red porous volcanic rock up to 1/4" in size

also known as Red Scoria or Cinders

  • a perfect 100% natural planting media or ingredient

  • porous texture makes it lightweight, while rock nature holds its shape

  • acts as a rigid sponge to hold nutrients and water

  • excellent drainage for sensitive crops (succulents, bonsai, tree cuttings)

  • a permanent aspect of soil structure; not prone to break down

  • full of minerals from deep in the earth; any rock dust produced is a great addition to compost

  • In comparison to other porous Lava Rocks:

    • Pumice comes from the froth at the top of lava, while Scoria is solidified from the lava itself

    • Scoria is more acidic than pumice, as well as more dense and thus heavier

    • Though both are porous, pumice is light enough to float on water and scoria will sink

    • Pumice is more riddled with air pockets inside it to hold water, and thus dries out slower than Scoria

    • Scoria tends to be more harsh and angular, while pumice is more rounded and smooth

    • Pumice has some tendency to be dislodged when watering, and thus scoria works better as a top dressing

    • The darker colors of scoria warm up quicker in the sun to hold heat around roots

    • Darker colors of scoria also hide the dirty look of algae and moss better than pumice does

    • Red scoria gets its color from the iron it contains, Black scoria also contains magnesium rich minerals

  • sourced from a volcanic quarry on USA's west coast

  • use as is for cactus and succulents, or combine with other ingredients for an ideal potting mix

  • will not float to the top of a potting mix or smash between your fingers like perlite does

  • improves the quality and grow-friendly nature of any soil mix

  • excellent for use with hydroponic or aquaponic systems that keep plants watered but not waterlogged by capillary action

  • 1/8" size is ideal for propagation trays; as the pot gets bigger, so can the rock size used within it

  • 1/4" size is most common for horticulture use as a potting soil ingredient

  • larger sizes are great for large planters and indoor planting beds

  • weighs about 30-40 lbs to the cubic foot, which is just under about 7 gallons of volume

  • 1/2 cubic foot is the largest small quantity that is cost-effective to ship in the mail

  • shipped in a sturdy plastic bag inside a 12×10×7” box, weighing up to but not over 20 lbs

  • shipping cost is calculated separately especially to keep local costs low

  • larger and custom quantities may be available for direct local pickup; please contact me if interested

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Red porous volcanic rock up to 1/4" in size

also known as Red Scoria or Cinders

  • a perfect 100% natural planting media or ingredient

  • porous texture makes it lightweight, while rock nature holds its shape

  • acts as a rigid sponge to hold nutrients and water

  • excellent drainage for sensitive crops (succulents, bonsai, tree cuttings)

  • a permanent aspect of soil structure; not prone to break down

  • full of minerals from deep in the earth; any rock dust produced is a great addition to compost

  • In comparison to other porous Lava Rocks:

    • Pumice comes from the froth at the top of lava, while Scoria is solidified from the lava itself

    • Scoria is more acidic than pumice, as well as more dense and thus heavier

    • Though both are porous, pumice is light enough to float on water and scoria will sink

    • Pumice is more riddled with air pockets inside it to hold water, and thus dries out slower than Scoria

    • Scoria tends to be more harsh and angular, while pumice is more rounded and smooth

    • Pumice has some tendency to be dislodged when watering, and thus scoria works better as a top dressing

    • The darker colors of scoria warm up quicker in the sun to hold heat around roots

    • Darker colors of scoria also hide the dirty look of algae and moss better than pumice does

    • Red scoria gets its color from the iron it contains, Black scoria also contains magnesium rich minerals

  • sourced from a volcanic quarry on USA's west coast

  • use as is for cactus and succulents, or combine with other ingredients for an ideal potting mix

  • will not float to the top of a potting mix or smash between your fingers like perlite does

  • improves the quality and grow-friendly nature of any soil mix

  • excellent for use with hydroponic or aquaponic systems that keep plants watered but not waterlogged by capillary action

  • 1/8" size is ideal for propagation trays; as the pot gets bigger, so can the rock size used within it

  • 1/4" size is most common for horticulture use as a potting soil ingredient

  • larger sizes are great for large planters and indoor planting beds

  • weighs about 30-40 lbs to the cubic foot, which is just under about 7 gallons of volume

  • 1/2 cubic foot is the largest small quantity that is cost-effective to ship in the mail

  • shipped in a sturdy plastic bag inside a 12×10×7” box, weighing up to but not over 20 lbs

  • shipping cost is calculated separately especially to keep local costs low

  • larger and custom quantities may be available for direct local pickup; please contact me if interested

Red porous volcanic rock up to 1/4" in size

also known as Red Scoria or Cinders

  • a perfect 100% natural planting media or ingredient

  • porous texture makes it lightweight, while rock nature holds its shape

  • acts as a rigid sponge to hold nutrients and water

  • excellent drainage for sensitive crops (succulents, bonsai, tree cuttings)

  • a permanent aspect of soil structure; not prone to break down

  • full of minerals from deep in the earth; any rock dust produced is a great addition to compost

  • In comparison to other porous Lava Rocks:

    • Pumice comes from the froth at the top of lava, while Scoria is solidified from the lava itself

    • Scoria is more acidic than pumice, as well as more dense and thus heavier

    • Though both are porous, pumice is light enough to float on water and scoria will sink

    • Pumice is more riddled with air pockets inside it to hold water, and thus dries out slower than Scoria

    • Scoria tends to be more harsh and angular, while pumice is more rounded and smooth

    • Pumice has some tendency to be dislodged when watering, and thus scoria works better as a top dressing

    • The darker colors of scoria warm up quicker in the sun to hold heat around roots

    • Darker colors of scoria also hide the dirty look of algae and moss better than pumice does

    • Red scoria gets its color from the iron it contains, Black scoria also contains magnesium rich minerals

  • sourced from a volcanic quarry on USA's west coast

  • use as is for cactus and succulents, or combine with other ingredients for an ideal potting mix

  • will not float to the top of a potting mix or smash between your fingers like perlite does

  • improves the quality and grow-friendly nature of any soil mix

  • excellent for use with hydroponic or aquaponic systems that keep plants watered but not waterlogged by capillary action

  • 1/8" size is ideal for propagation trays; as the pot gets bigger, so can the rock size used within it

  • 1/4" size is most common for horticulture use as a potting soil ingredient

  • larger sizes are great for large planters and indoor planting beds

  • weighs about 30-40 lbs to the cubic foot, which is just under about 7 gallons of volume

  • 1/2 cubic foot is the largest small quantity that is cost-effective to ship in the mail

  • shipped in a sturdy plastic bag inside a 12×10×7” box, weighing up to but not over 20 lbs

  • shipping cost is calculated separately especially to keep local costs low

  • larger and custom quantities may be available for direct local pickup; please contact me if interested

Pumice! Fine grade porous lava rock
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