Plants That Don T Like Mushroom Compost

When it comes to mushroom compost, it’s a fantastic organic material that many plants thrive in. However, not all plants are fond of it, and it’s important to know which ones to avoid when using mushroom compost. As a mushroom growing enthusiast, I’ve had my fair share of experiences with different plants and compost, and I’m excited to share my insights on plants that don’t favor mushroom compost.

Why Some Plants Don’t Like Mushroom Compost

Before diving into the specific plants, it’s crucial to understand why some plants may not be compatible with mushroom compost. Mushroom compost tends to be alkaline and high in soluble salts, which can be detrimental to certain plant species. Additionally, some plants are sensitive to the unique nutrients found in mushroom compost, leading to adverse effects on their growth and development.

Plants to Avoid Using Mushroom Compost With:

  1. Rhododendrons and Azaleas: These acid-loving plants do not thrive in alkaline soil, which makes them unsuitable for mushroom compost.
  2. Blueberries: Similar to rhododendrons and azaleas, blueberries require acidic soil conditions to flourish, making them incompatible with alkaline mushroom compost.
  3. Camellias: Another acid-loving plant that prefers a lower pH, camellias may struggle to thrive in soil amended with mushroom compost.
  4. Ferns: Ferns are known to be sensitive to high salt levels, which are commonly found in mushroom compost, making it unsuitable for their growth.
  5. Ericaceous Plants: This group includes plants like heathers, pieris, and hydrangeas that thrive in acidic soil, making them unsuited for mushroom compost.

Personal Experience

As a mushroom enthusiast and avid gardener, I’ve learned the hard way about the impact of using mushroom compost with certain plants. One season, I decided to use mushroom compost with my azaleas, hoping for a healthy boost. Unfortunately, I ended up stunting their growth due to the alkaline nature of the compost. It was a valuable lesson that prompted me to research and understand the specific needs of each plant before incorporating mushroom compost.


While mushroom compost is a fantastic amendment for enriching soil and promoting the growth of many plants, it’s essential to be mindful of its potential impact on specific species. By being aware of plants that don’t favor mushroom compost, gardeners can make informed decisions and ensure the optimal health and vitality of their green friends.