We recommend you mist the inside of the box (the ceiling) twice per day. However, avoid spraying so much that water pools on the mushrooms or substrate- standing water can lead to contamination. Mushrooms love it humid, but they don't like swimming. Black oysters are especially sensitive, sitting water on its caps can lead to deformed growth.

The lid is designed to fold into a triangle “roof” over your ShroomBag. Just tuck the side flaps into the top opening (Check out our home page for a visual) to form a little canopy.

This setup helps create a cozy, humid environment for your mushrooms to fruit.

Pro tips:

• Mist the inside of the lid regularly- this keeps humidity high where it matters most.

• The box is made to handle misting- it’s high-quality, non-toxic, and totally safe for growing mushrooms.

• Mushrooms will start forming right under the roof, where it’s nice and moist.

• The box allows for airflow through the front and sides of the lid, so your mushrooms can breathe while staying humid.

When the mushrooms start stretching up and nearly touch the lid, it’s time to give them more room.

Just open the top flap and rest the side flaps on top of the box. You’ll go from a cozy tent to a wide canopy, letting your mushrooms breathe and grow to full size without bumping their heads.

Let the flap do its thing- it’s all part of the design.

Anywhere relatively humid with indirect light and good oxygen flow like a kitchen counter, windowsill, or shaded outdoor area. Avoid direct sunlight and strong drafts.

If you notice a green or gray discoloration on your ShroomBag around where you cut the bag, it could be a sign of contamination.

Here’s what to do:

• Don’t panic, this is common and manageable.

• Spray the affected area lightly with white vinegar. This helps stop the spread and kill the infection.

• Avoid touching or disturbing the infected spot too much.

• Keep the bag in a well-ventilated area and continue misting as usual away from the infection site.

Your mushrooms can still grow just fine and healthy, especially if caught early. If this happens, feel free to reach out with pictures and questions and we'll help to the best of our abilities.

Yes! Your kit will do well outside as long as it’s shaded and humid. Under plants or on a covered porch is ideal.

Most kits yield 2–3 flushes. After your first harvest, flip the bag and cut the opposite side. After 2-3 harvests, it's time to expand your substrate outdoors!

Don’t toss it, spent substrate is valuable. You can:

• Break it up in pasteurized straw or wood chips to grow more mushrooms!

• Use it as garden mulch- it will enrich your soil and may produce more mushrooms over time.

• Support soil health- the mycelium continues breaking down organic material and promoting microbial diversity.

For best results, we recommend starting your kit as soon as it arrives.

The box is shelf-stable for up to 2 months, and as always fresh is best.

Store in a moderate temperature range (55-70 degrees Fahrenheit) and keep the box closed.

Absolutely. No syringes, no sterile lab, no stress. They’re designed for home cooks, restaurant owners, curious minds, and anyone who enjoys fresh food.