A tall, rugged, orange clay vase with white and gray textured horizontal stripes on a light gray background.

Ash from grasses is usually rich in silica : it can be substituted for silica-like components of a glaze, like quartz or flint, with different effect from different plants

Two artistic vases with dried plants, decorated with geometric patterns and contrasting colors, hanging against a light-colored wall.
Two cylindrical bones, one white and aged, the other brown and aged, standing upright on a light surface.
A tall, rectangular ceramic vase with a brown glaze and decorative white accents, placed against a plain gray background.
Close-up of a roll of paper towels with labels indicating different types of herbs: bracken, goose grass, cow parsley, woodspur, and other plants.