HSN Code 0604 refers to "Foliage, branches and other parts of plants, without flowers or flower buds, and grasses, mosses and lichens, of a kind suitable for bouquets or for ornamental purposes, fresh, dried, dyed, bleached, impregnated or otherwise prepared." This classification code is essential for identifying ornamental plant materials for import/export purposes based on their nature, preparation, and intended use. Common products under HSN Code 0604 include dried foliage, decorative branches, moss, lichens, and various types of ornamental grasses. Additionally, the GST rate for these plant materials under this code supports accurate trade compliance.