
Mushrooms require a lot of humidity to grow successfully. While you don't need to water mushrooms like a plant, it is recommended to mist the area around your kit with water 2-4 times a day. If you live in a dry climate, your mushrooms may need a bit more water. It is also important to note that mushrooms need light to grow, so placing your kit in a dark closet is not ideal. The temperature can also affect mushroom growth, with the ideal temperature range being between 65-75 °F.
| Characteristics | Values |
|---|---|
| How often to water mushrooms | Mist the exposed mycelium twice a day with a spray bottle of clean tap water |
| Mushrooms like wet conditions, so don't be afraid to add more water if they look dry | |
| Mist the air around your mushrooms as they grow to prevent them from drying out | |
| If you live in a dry climate, mushrooms may need more water | |
| Mist 3-4 times a day or whenever you have a chance | |
| If you know you will be unable to mist your kit, create a mini micro-climate around your grow kit to maintain humidity | |
| If you're running modified tubs, you don't need to mist |
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What You'll Learn

Misting kits twice daily
Mushrooms require misting kits twice daily to maintain the humidity levels necessary for their growth. The process involves using a spray bottle filled with clean tap water to mist the exposed mycelium from the cut. This is done twice a day, ensuring that the mushrooms receive ample water and humidity.
Misting kits are essential for creating humidity, a critical factor in successful mushroom growth. While mushrooms do not require traditional watering like plants, they thrive in wet conditions and humid environments. By misting the area around the mushroom kit, you can maintain the necessary humidity levels. It is recommended to mist at least 2-3 times a day, or even 3-4 times a day, to create a humid microclimate.
However, it is crucial not to overwater the mushrooms. While they prefer wet conditions, too much water on the surface of the block can cause issues. Therefore, it is advised to focus on misting the air around the mushrooms to prevent them from drying out. If you notice dryness, increase the frequency of misting to maintain optimal humidity.
Additionally, temperature plays a significant role in mushroom growth. If the temperature deviates from the ideal range of 65-75 °F, the mushrooms may grow slower or faster. Therefore, it is important to maintain the recommended temperature range and adjust it according to the specific mushroom variety.
By following these guidelines and misting your mushroom kits twice daily, you can provide the optimal conditions for their growth. This consistent misting, along with maintaining the appropriate temperature and humidity levels, will help ensure the healthy development of your mushrooms.
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Soaking kits before and after a trip
Mushrooms require regular misting, and it is important to maintain humidity to encourage growth. Misting should take place at least twice a day, but this can be increased if the mushrooms look dry. It is also recommended to mist the area around the mushrooms, not just the mushrooms themselves, to create humidity.
If you are going on a trip, it is recommended to give your mushroom kit a quick soak before you leave to ensure it has enough water to grow while you are away. You can also create a micro-climate around your kit to maintain humidity while you are away. Place a wet tea towel around the base of the kit, or place the kit near a sink filled with water.
When you return from your trip, you should mist your kit again. If you have harvested mushrooms before your trip, continue to mist the block twice daily to encourage a second flush of growth.
- If you are soaking your kit before a trip, ensure you do not leave any standing water on the surface of the block. Mushrooms thrive in wet conditions, but too much water on the block can cause problems.
- If you are going away for a long time, consider asking someone to mist your kit while you are away.
- If you are harvesting mushrooms for a trip, it is recommended to eat them right away. If you are not ready to eat them, store them in a paper bag in the refrigerator for up to a week.
- If you are taking mushrooms on a trip, consider cold-soaking other foods to reduce the weight of your pack and save time on cooking and cleaning.
- If you are going on a trip, it is recommended to test your cold-soaking system beforehand to ensure it works for you.
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Spraying the area around kits
Mushrooms require humidity to grow successfully. To create humidity, mist the area around your kit with a spray bottle of clean tap water. Aim for at least 2-3 sprays a day, increasing the frequency if the area looks dry. You can also create a mini micro-climate by placing a wet tea towel around the base of the kit or positioning it near a sink filled with water.
It is best not to miss a day of misting, but if you need to leave your mushrooms unattended, you can prepare a mini micro-climate to maintain humidity. If you are growing your mushrooms in a modified tub, you may not need to mist at all, as long as your substrate is at field capacity. For unmodified tubs, simply flip the lid when colonisation is complete.
If you are growing your mushrooms in a monotube, you will need to mist. These setups come with airflow filters that stick over the holes in the tube, preventing bugs from entering. If your monotube can breathe, you may not need to mist as frequently. However, if your mushrooms dry out quickly, mist until the walls are soaked.
Misting is an important step in creating the ideal environment for your mushrooms to fruit and release spores. Too much interference with their environment, such as opening the chamber or fanning, can make them uncomfortable. Therefore, it is recommended to minimise these actions and focus on maintaining humidity through misting the area around your mushroom kit.
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Temperature and humidity
Mushrooms thrive in humid environments. While you don't need to water mushrooms like a plant, creating humidity is essential for their growth. Spray the area around your mushroom kit with a few pumps of water from a spray bottle at least 2-3 times a day. You can also mist the exposed mycelium (the white-ish layer on the surface of the block) twice daily. If you see condensation underneath the plastic flaps of your X-cut area, this indicates that there is enough humidity. However, if it appears dry, increase the frequency of spraying.
It is best not to miss a day of misting, but if you need to leave your mushrooms unattended, you can create a mini micro-climate to maintain humidity. This can be done by placing a wet tea towel around the base of the kit or positioning the kit near a sink filled with water.
Temperature plays a crucial role in mushroom growth. Most mushroom kits will grow at room temperature (65-75 °F). If your space is consistently cooler than 65 °F or warmer than 70-75 °F, your mushrooms may grow slower or faster, respectively. If your environment is warmer, consider a Pink or Golden Oyster kit as they can grow up to 85 °F. For cooler spaces, try a Lion's Mane, Shiitake, Blue Oyster, or Shiitake kit, which can grow down to 50 °F.
By understanding the optimal temperature and humidity requirements for mushrooms, you can create the ideal conditions to support their growth and development.
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Misting after the first flush
Mushrooms generally require misting multiple times a day, especially if you live in a dry climate. The misting process involves spraying the area around the mushrooms with a few pumps of water from a spray bottle, creating humidity, which is a key factor in successful mushroom growth.
After the first flush, it is recommended to continue misting your block two times daily, as you did before the first flush. You should see new growth again within the next two weeks. If you are struggling to grow a second flush, you can try flipping the grow block over and making a new cut in the bag. It is also important to maintain a temperature between 60 and 80 °F, depending on the mushroom species.
Some sources suggest that misting should only be done when the cake looks dry or the walls of the growing container are not wet. Over-misting can cause problems, as too much water on the surface of the block can be detrimental to mushroom growth. If you know you will be unable to mist your mushrooms for an extended period, you can create a mini micro-climate by placing a wet tea towel around the base of the kit or setting up the kit near a sink filled with water.
Additionally, it is important to note that misting is just one aspect of creating the ideal environment for mushroom growth. Other factors, such as temperature, humidity, and air circulation, also play a crucial role in promoting healthy mushroom growth.
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Frequently asked questions
Mushrooms do not need to be watered like plants. However, they do require humidity to grow. Mist the area around your mushrooms with water at least 2-3 times a day.
You should mist the area around your mushrooms with a few pumps of water. Avoid misting the mushrooms directly as too much water on the surface of the block can cause problems.
If the area around your mushrooms looks dry, increase the frequency of misting.

























