Frailea castanea Seeds | Rare Cactus Seeds for Home Growing

Frailea castanea seeds are very small, round and typically dark brown to black. They are produced abundantly, often from self-pollinating flowers, making this species easy to propagate from seed.

**Propagation:**
Sow seeds on the surface of a fine, well-draining cactus mix and do not cover, as they require light to germinate. Keep the medium consistently moist (not soggy) and maintain warm temperatures around 20–25°C. High humidity helps—covering the container can improve germination. Seeds usually sprout within 1–2 weeks. Provide bright, indirect light and gradually reduce humidity as seedlings establish.