Portobello 10cc Liquid Culture Syringe

Large Caps. Rich Aroma. Classic Gourmet Mushroom.

Grow one of the world’s most recognizable gourmet mushrooms with the Portobello (Agaricus bisporus) 10cc Liquid Culture Syringe from Spore Genetics. This strain produces robust, meaty caps that are perfect for grilling, stuffing, roasting, and elevating plant-forward recipes. Portobello mycelium thrives on nutrient-rich compost substrates and delivers thick, mature caps with deep color and savory aroma.

Whether you're cultivating for the kitchen or for market, Portobello offers predictable growth and impressive results.

Cultivation Profile

Growth Characteristics:
Moderate colonizer; produces thick stems and large, flat caps when matured fully. Prefers nutrient-dense substrates and darker environments.

Ideal Conditions

Colonization: 65–75°F (18–24°C), low-light or dark incubation

Substrates: Composted manure, straw + manure blends, or enriched compost blocks

Fruiting: 60–70°F with 80–90% humidity

Casing Layer: Portobello performs best with a light casing layer (peat/vermiculite or similar)

Flushes: Typically 1–2 heavy flushes depending on substrate nutrition

Harvest Timing
Harvest when caps fully flatten and the veil is broken—this is the signature “Portobello” stage where texture, size, and flavor are at their peak.

What’s Included

· One (1) 10cc BD Luer-Lock Syringe containing live Portobello mycelium

· One (1) Sterile 16-Gauge Needle

· One (1) Alcohol Prep Pad

· Includes our “How to Use a Gourmet Liquid Culture Syringe” insert with QR code for step-by-step instructions