RAINFLOW Horticultural Charcoal for Plants - 290g Natural Biochar for Potting Soil and Indoor Plants (3-5 mm)

RAINFLOW Horticultural Charcoal for Plants

A natural soil supplement crafted for potted plants, succulents, and bonsai, this 290 g bag brings a coarse charcoal blend into standard potting mixes. The 3-5 mm granules are easy to mix, layer, or surface cover, helping roots access air, water, and nutrients more smoothly in home setups.

Key soil benefits

• Temperature regulation: charcoal absorbs and slowly releases heat from sunlight, helping stabilize soil temperatures for healthier root zones.
• Moisture and nutrient storage: the porous structure holds excess water and nutrients and releases them when the plant needs them, aiding containers without drainage holes.
• Improved drainage and aeration: the loose, airy texture increases air movement in the root zone, supporting robust root growth.
• Appropriate particle size: 3-5 mm pieces offer surface coverage that distributes moisture and roots can access without crowding.

Versatile uses and plant fits

• Ideal for potting soil, succulent mixes, and indoor plant substrates that require better drainage and air exchange.
• Compatible with a range of plants including Cattleya, Dendrobium, Vanda, Paphiopedilum, and bonsai; can also be used as a decorative element in glass containers or fish tanks.

How to use

Blend a small amount into your soil to improve texture, or apply a thin layer on the surface as a mulch to help balance moisture. For orchid mixes, combine charcoal with a well draining medium to maintain air pockets around roots.

What is in the bag

290 g of natural biochar with a diameter range of 3-5 mm, sourced for soil grade amendments and long term use in homes and green spaces.