King Blue

Pleurotus ostreatus

Strain Code: MAM-013

King Blue is our highest-yielding variety, capable of producing an impressive 2–4 lbs per block. This deep blue oyster strain combines the color intensity of premium Blue Oyster with noticeably denser, meatier clusters and thicker stems. It's quickly becoming the standard choice for commercial growers who want maximum yield per block without sacrificing visual appeal or eating quality. The wide fruiting range (55–75°F) and easy side-cut method make it accessible to growers at any experience level, while the heavy yields make the economics compelling for high-volume operations.

Fruiting Temp

55–75°F

Fruiting Period

7–14 Days

Yield

2–4 lb

Difficulty

Easy

Fruiting Method: Side Cut

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Cultivation Tips for King Blue

Side cut with a generous 5–6 inch opening — King Blue produces large clusters that need room to develop.

This is our heaviest yielder. Ensure blocks have adequate spacing (8+ inches) for proper air circulation around large clusters.

The deep blue color is most intense at cooler temperatures (55–65°F). Warmer conditions produce lighter grey-blue caps.

Harvest timing is critical — catch clusters when caps are still slightly cupped for the best weight and shelf life.

In the Kitchen

Culinary Profile

King Blue has a slightly more intense flavor than standard Blue Oyster, with a meatier texture due to its denser growth habit. It's versatile in the kitchen — excellent sautéed, grilled, in stir-fries, or as a meat substitute in tacos and sandwiches.

Frequently Asked Questions

How does King Blue differ from standard Blue Oyster?

King Blue produces denser clusters with thicker stems and higher total yields (2–4 lbs vs. 2–3 lbs). The blue color is typically deeper, and the texture is meatier. Think of it as Blue Oyster's bigger, beefier sibling.

Is King Blue the best variety for maximizing revenue per block?

For pure yield-per-block economics, yes. At 2–4 lbs per block and standard oyster pricing, King Blue delivers the highest gross revenue per unit for most operations.

Can King Blue replace Blue Oyster in my lineup?

Many growers are doing exactly that. King Blue performs similarly in cultivation but yields more. The main consideration is that clusters are larger and need more space.

Ready to Grow King Blue?

Get in touch for pricing, availability, or to add King Blue to your standing order.

info@MidAmMushrooms.com

419-283-4373

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