Portobello

 Scientific Name: Agaricus bisporus

​

 Appearance: Large, brown caps with a smooth texture and pronounced gills.

​

 Flavor Profile: Rich, earthy, and umami-packed; meaty texture.

​

 Growth Conditions:

• Substrate: Same as White Button, with composted manure or Coco Coir preferred.

• Temperature:

• Colonization: 75–80°F

• Fruiting: 60–65°F.

• Humidity: 80–90%.

• Fresh Air Exchange (FAE): Moderate; requires 2–3 air exchanges per day.

​

 Yield:

• 5 lb substrate block: 1.5–2 lbs total.

• Flushes: 2–3

• Per Flush: 0.8–1 lb for the first flush; subsequent flushes taper off.

• 10 lbs substrate in monotub: 3–5 lbs total.

• Flushes: 3–4

• Per Flush: 1.5–2 lbs for the first flush; subsequent flushes taper off.

​

 Popularity: A favorite for its flavor and versatility.

​

 Uses: Culinary (stuffed mushrooms, steaks, sandwiches).

​

 Notes: Portobellos are mature White Button mushrooms; allow extra time for full development.