Grain Spawn Bag – 1Kg

GuanaHongos proudly brings you our 1Kg Colonized Grain Spawn — the secret weapon behind thriving mushroom grows, whether you’re a seasoned cultivator or a passionate fungi fanatic.

We’re not just slinging grain — we’re delivering first-generation, gourmet mushroom genetics, hand-selected for powerful performance and juicy yields. Think of it as rocket fuel for your mycelium.

Every bag is prepped, colonized, and sealed with love (and lab-grade precision) in our custom facility right here in Costa Rica. Sterile? Of course. Reliable? Always. Delicious results? You bet.

At GuanaHongos, we believe growing mushrooms should feel like magic — and we’re here to make sure yours grow big, fast, and strong.