Plant Guides on Potting Soils and Greenhouses: . Perlite Gradation and Peat/Perlite Mixtures A fascinating study on how perlite particle size affects water retention, aeration, and drainageand why smaller sizes could and should be used.; Container Growing with Perlite and Perlite /Peat Mixes Why and how perlite is used in container growing, especially large containers.
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