Porcini Mushroom King Seeds – Gourmet Edible Mushroom Spawn (Boletus edulis)

Prepare a shaded, humid area — either a woodland-style garden bed under trees or an indoor tray/substrate box. Preferably soil rich in organic matter or a compost-enriched substrate.
Spread the Porcini spores / spawn evenly over the surface of the prepared substrate or soil. Do not bury deeply — light covering or mixing into top layer is sufficient.
Maintain high humidity (e.g. via misting) and keep the substrate moist but not waterlogged. Indirect or shaded light is appropriate; avoid direct sun.
Allow time for mycelium to colonize substrate — germination / colonization often takes 2–4 weeks; fruiting (mushroom formation) may take several months, depending on conditions.

Patience is key — porcini are slow to fruit; sometimes first harvest may appear several months after inoculation.
Mimic natural forest conditions — use leaf litter, wood chips or composted organic matter under trees or in shaded garden patches to encourage growth.
Maintain high humidity, especially during colonization and fruiting — misting and shade help.
If growing outdoors, choose a spot under deciduous or evergreen trees; porcini often grow symbiotically with tree roots.