Sumi (the Japanese word for charcoal) is the core material in these ceramic-coated, peppercorn-sized beads. Designed to be used as a soil amendment or a soil alternative, the beads have several benefits. First, each bead absorbs up to 70% of its volume in water, slowly releasing water when the soil begins to dry, extending the period between waterings. Second, they improve root aeration, used alone as a growing medium or in a potting mix. Third, seedlings grown in the beads are removed easily, avoiding damage to the root system and transplant shock. Finally, because the charcoal is activated, the beads help absorb odor.
Each 1kg (35 oz) package fills about four 4" diameter pots, or can be mixed in a ratio of one part SumiSoil to 10 parts potting medium (increase the amount of SumiSoil for plants requiring greater hydration). Suitable for both indoor and outdoor plants.
Made in Japan.