Mushroom compost is a type of slow-release plant fertilizer. The compost is made by mushroom growers using organic materials such as hay, straw, corn cobs and hulls, and poultry or horse manure. There are several uses for mushroom compost. It can be used as a soil amendment for lawns, gardens, and container plants. However, this product should be used with caution due to its high soluble salt levels. These salt levels can kill germinating seeds, harm young seedlings, and cause damage to salt-sensitive plants, like azaleas and rhododendrons.
The beneficial uses of mushroom compost, however, far outweigh the downside of high salt levels. This type of compost is reasonably inexpensive. It enriches the soil and supplies nutrients for the healthy growth of plants. Mushroom compost also increases the water-holding capacity of the soil, which decreases your watering needs. Mushroom compost is suitable for most garden plants. It supports various types of plant growth, from fruits and vegetables to herbs and flowers. To get the greatest results when organic gardening with mushroom compost, thoroughly mix it in with the garden soil prior to planting or allow it to sit over winter and apply in spring.
Keep in mind that if you’re having your mushroom compost delivered, the max load in one trip is 4 cubic yards, so if you order more a nursery associate will contact you regarding the charge for additional trips.