I wanted to share a peat-free soil mix for blueberries that has worked great for me in containers. It would work great in raised beds as well. I know this has been discussed in several threads but I wanted to make it easy for anyone searching.
Here’s the recipe, per 7 gallons of soil:
- Main Mix
- 2/3 pine bark
- 1/3 organic top soil
- Amendments
- 1.5 Tbsp powdered elemental sulfur (99-100% grade)
- 1 cup worm castings
- 1 cup holly tone
- Optional
- 1 Tbsp blood meal (fast release nitrogen)
- 2 Tbsp feather meal (slow release nitrogen)
Works great for me. Soil pH is 4.4 after one year.
I mix all the ingredients really well before planting so that the mixture is even and the amendments aren’t all just sitting on top.
The optional ingredients are for if I’m planting directly into this mix without waiting and want to make sure pine bark doesn’t tie up the nitrogen in the soil. I’m not sure if the extra nitrogen is 100% necessary but it hasn’t hurt. All my plants are doing great.