- Which plants grow well over the largest range of pH values?
- Which plant can grow in the most acidic soil?
- Which plant can grow in the basic soil only?
- What is the pH range for onion to grow well?
- Black currant and strawberry
- Potato (4.5 - 6.0)
- Mint (7.0 - 8.0)
- 6.0 - 7.0