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Portabella, Giant Heirloom Mushroom Kit

Portabella Heirloom Kit

Portabella, Heirloom (Agaricus bisporus)

The reason we like the Heirloom Portabella is because it consistently grows large portabella size mushrooms with little to no effort. These mushrooms are thick and can often grow as large as the opening of the mushroom kit. The kit grows a higher percentage of the larger Portabella's than our standard Portabella/Crimini kit. It is amazing to see and taste the beautiful flesh of these giant mushrooms. It is truly one of our best mushroom kits.

Product Specifications

Contains: Inoculated mushroom compost, casing and instructions. All you add is Water.  It is complete.

Best Temperature for Growing: 63 - 68 degrees Fahrenheit

Kit Instructions: See Mushroom Kit Instructions

Mushroom Kit Dimensions: Length 12",Width 10",Height 8".

Shipping Weight: 12lbs.

Double Boxing AvailableDouble Boxing Available! Nondescript packaging: Add $3.00 per kit.  Choose "Plus Double Box" in the drop-down option below. Your order will be placed in a second plain brown box so the recipient will not know what is being delivered. This feature can also help mushroom kits survive shipping during harsh, cold weather.

Choose "Plus Double Box" in the drop-down option below to add Double Boxing.

Seasonal Product

Available from September 10 through May 10

Our products grow best in cooler months. It's too hot to ship and grow kits during the summer


Easy to Grow Mushrooms

Growing mushrooms at home is easy with our Complete Kits.
Kits include everything you need to grow multiple mushroom crops for 6 to 10 weeks.  You can expect your first crop in just 3 to 4 weeks.

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Shiitake Mushroom Kit

Shiitake mushrooms are one of the tastiest mushrooms grown. It has a wonderful earthy flavor, which is why it is desired as an expensive good edible. Grows approximately 2 pounds of shiitakes over a 6 month period of time.

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Mushroom Adventures
11107 State Highway 70, Marysville, CA | (530) 741-2437
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