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Many gardeners use the terms “potting mix” and “potting soil” interchangeably. “But, technically, potting mix is the correct term for the soil-less product we use to grow plants in pots ...
Houseplants are typically grown in specialized soilless mixtures called potting compost (in the UK), potting mix, or potting soil. [6] Most potting mixes contain a combination of peat or coir and vermiculite or perlite. Keeping plants consistently too wet ("overwatering") leads to the roots sitting in water, which often leads to root rot. Root ...
A soil test may be done to analyze the chemistry of a potting mix, despite the mix not necessarily being made of soil. As an approximation for indoor home planting, the mix is generally treated as greenhouse growth medium. The main method is a saturated media extract (SME), which tests the chemical contents of a water extract of the mix.
The various hydroponic media available, such as expanded clay and coconut husk, contain more air space than more traditional potting mixes, delivering increased oxygen to the roots, which is important in epiphytic plants such as orchids and bromeliads, whose roots are exposed to the air in nature. Additional advantages of passive hydroponics ...
[citation needed] Peat is discouraged as a soil amendment by the Royal Botanic Gardens, Kew, England, since 2003. [32] While bark or coir-based peat-free potting soil mixes are on the rise, particularly in the UK, peat is still used as raw material for horticulture in some other European countries, Canada, as well as parts of the United States.
Epiphytes are usually found in the temperate zone (e.g., many mosses, liverworts, lichens, and algae) or in the tropics (e.g., many ferns, cacti, orchids, and bromeliads). [3] Epiphyte species make good houseplants due to their minimal water and soil requirements. [4]