Cannabis seeds are small, oval-shaped, and vary in color from light tan to dark brown. A healthy cannabis seed often has a hard outer shell with faint stripes or marbling patterns. If the seed feels firm when gently squeezed, it’s usually viable.
Avoid soft or pale seeds — they’re often immature and won’t sprout well. Some strains produce slightly larger or darker seeds, but the general size is about 2–5 mm. Good-quality seeds should be smooth, glossy, and slightly waxy to the touch. When stored in a cool, dark, and dry place, they can stay viable for years before planting.
