Thank you for purchasing a grow kit! Our Oyster Mushroom Grow Block is a colony of Oyster Mushroom mycelium growing on sterilized oak sawdust and oat hull pellets. If you aren’t ready to use your kit today, then you can store it in the refrigerator for up to 2 months.
To begin, open your box and take out the grow kit bag. Do not open or unwrap the bag as this will cause the grow block to dry out. With a clean and sharp knife, cut a 3" long X on one of the sides.
Your mushrooms will start to grow out of the X you have cut. Once they begin to grow, you might need to expand the cut to allow room for the mushrooms to fruit. If you see other mushrooms growing under the plastic, then let those additional ones die off so the block fruits into one main cluster at the X.
It’s best to keep your block in a humid space and mist often. Keep it out of direct sunlight. Use the included spray bottle to mist your block at the X 3-7 times daily. Oyster mushrooms require a lot of water to grow and like to be in temperatures ranging between 60-70 degrees Fahrenheit.
The best place to keep your block is typically a kitchen or bathroom counter. Indirect light will help your mushrooms develop deeper colors, but is not required for them to grow. Keep out of direct sunlight as the block will get too hot and dry out quickly.
Mushrooms will begin to grow over the next 1-2 weeks. They will start out as tight clusters of tiny mushrooms (called pins) in 2-5 days and will grow bigger over the next 1-2 weeks. Continue generously misting the block and mushrooms throughout the entire growing period. Your mushrooms should be ready to harvest in 8-12 days from the time the pins emerge.
Harvest when your caps start to curl and reach 2-5” wide. Harvest before the mushroom caps start to flatten out. To harvest, grasp the mushrooms at the base where they emerge from the block, gently twist and pull to remove the entire cluster.
After harvesting, let the block rest for a couple of weeks. Then, you can soak the plastic wrapped block in a bucket of water for 6-12 hours to increase humidity. Take the block out of the water, and continue misting your block every day. In another 10-14 days, a new crop should begin to pin near the edges of your first cluster. You’ll be able to get 2-3 total crops from your block. Happy growing!
Keep your mushrooms in a paper bag in the fridge.
Add the old grow block to your garden or compost pile! The nutrients and mycelium in the block are best recycled by going back to the land.
Remember to mist at least 3-7 times daily. If you think your mushrooms are drying out in your growing environment, you can construct a simple chamber to increase humidity. An effective growing chamber can be constructed from a loose plastic bag held with a few chopsticks or by keeping the block in a plastic tub with a vented lid. In order for your mushrooms to grow, you should provide high humidity, indirect light, plenty of fresh air, and temperatures ranging from 55 to 75 degrees Fahrenheit.
Usually no. We cut a small hole in the bag to expel air for shipping. If your bag has ruptured or exploded during shipping please reach out to us so we can solve the issue.
Colder temperatures and not enough misting are often the cause. Make sure to keep your room temperature between 60-70 degrees Fahrenheit and mist with water often (at least 3 times daily).
Fruit flies love what you are growing, so they may show up. This can happen with overwatering. You can create a fruit fly trap with a dish of vinegar covered by saran wrap and punctured with some holes. Keep this in the same room as your block to attract and trap the flies.
The white stuff you see is typically all mushroom mycelium and that is how the block should look.
If you see any black, green, or orange mold spots then there might be contamination. Too much water or not enough fresh air can cause other bacteria, molds, and fungi to grow on your block. Once you see these colored spots, it might be too late to eliminate them from your contaminated block. Please reach out to us if this happens and we will try to solve the issue.
It should have a rich, earthy smell. The mushroom grow blocks are made of oak and oat hull pellets. If you smell a foul, offensive odor that may indicate contamination from other molds or bacterias. Please reach out to us if this happens and we will try to solve the issue.