Unicorn 14A — Mushroom Substrate Fruiting Bag (Large)

The Unicorn 14A is the bestselling mushroom substrate fruiting bag in the range — and for most growers, it's the only one they'll ever need. Works across the widest range of species of any bag in the Unicorn lineup: oyster, shiitake, lion's mane, chestnut, king oyster and more. Made in the USA since 1990 by Unicorn Bags LLC, the industry's most trusted name in mushroom cultivation bags.

Specifications

• Filter: 0.5 micron A filter — balanced gas exchange, maintains moisture retention during colonisation without over-drying your block
• Capacity: Up to 3kg of substrate
• Size: 19" x 8" x 5"
• Material: 3.0 mil polypropylene — autoclave and pressure cooker safe at 121°C / 15 PSI
• Side-gusseted, reinforced bottom seal

Why Growers Choose the 14A

• The most versatile bag in the Unicorn fruiting range — substrate prep, fruiting blocks and in-bag fruiting all covered
• The 0.5 micron A filter gives consistent gas exchange without the moisture loss that wider filters can cause
• 3.0 mil polypropylene handles autoclave and pressure cooker cycles without warping or seal failure
• Trusted by hobbyists + commercial growers worldwide

Need a smaller bag? We also stock the compact 4A and 10A for smaller grows. Ready for more volume? The XLS-A is built for high-volume production.

Need grain spawn bags instead? See our spawn bag range.

The 14A is the most common bag growers start with when it comes to mushroom substrate fruiting bags. In stock & dispatched quickly from our UK warehouse.