How To Grow Portobello Mushrooms Inside. Introduce spores and wait for the mycelium to develop. The process is pretty much like outdoor growing.
To ensure that you’re able to grow portobello mushrooms successfully, you’ll need to maintain the proper temperature and humidity. Harvest portobello mushrooms when the heads attain a diameter of about four and six inches. This is the network of filaments that will underpin your mushroom growth.
To ensure that you’re able to grow portobello mushrooms successfully, you’ll need to maintain the proper temperature and humidity.
If you choose to grow your portabellas outdoors, leave your planting bed in direct sunlight for a fortnight. You can grow portobello mushrooms indoors and outdoors, but there are special considerations for both. Many of us grow up watching our parents in the garden picking tomatoes and carrots, but it’s still quite rare to see people growing their own. Break the mushrooms with the help of sawdust into the bucket and mix it in coffee grounds.