Abstract: An aerosol-generating article is provided, including an aerosol-generating substrate, the aerosol-generating substrate formed of a homogenised plant material, including: between 1 percent by weight and 65 percent by weight of non-tobacco plant particles, on a dry weight basis; between 15 percent by weight and 55 percent by weight of aerosol former, on a dry weight basis; between 5 percent by weight and 10 percent by weight of cellulose ether, on a dry weight basis; and between 5 percent by weight and 50 percent by weight of additional cellulose, on a dry weight basis, in which the additional cellulose is in a form of isolated cellulose and is not derived from the non-tobacco plant particles, and in which a ratio of additional cellulose to cellulose ether in the homogenised plant material is at least 2.