How to Raise Soil pH Levels Naturally?

Soil pH is a critical factor that affects the growth of plants. Some plants thrive in acidic soil, while others need alkaline soil to grow. A soil with a pH level of 7.0 is considered neutral. Values below 7.0 are considered acidic, while values above 7.0 are alkaline. Most plants grow well in a pH range between 6.0 and 7.5. However, some plants require a higher pH level to grow and produce better yields. In this article, we will explore the tips and tricks to raise soil pH levels and the names of the plants that need high pH soil.

1. Test the Soil pH

Before you start to amend the soil pH level, it’s important to test the soil pH level using a soil pH test kit or use potatoes (click here to know more) . You can purchase soil pH test kits online or from your local garden center. The test will give you an accurate reading of the soil pH level, allowing you to determine how much pH adjustment is needed.

2. Use Limestone

Limestone is an excellent source of calcium carbonate, which can help to raise the soil pH level. However, the amount of limestone required to raise the pH level depends on the soil’s texture and type. Clay soil requires more limestone than sandy soil. Apply limestone to the soil in the fall or winter when the soil is dry, and it’s easier to work with. The limestone will break down slowly over time and raise the soil pH level.

3. Use Wood Ash

Wood ash is a natural source of potassium carbonate and calcium carbonate, which can help to raise the soil pH level. However, wood ash is only recommended for acidic soil, as it can make alkaline soil too alkaline. Spread wood ash on the soil in the fall or winter when the soil is dry. Wood ash should be used in moderation, as too much can burn plants.

4. Add Dolomite Lime

Dolomite lime is a natural source of calcium and magnesium, which can help to raise the soil pH level. Dolomite lime is recommended for soils that are low in magnesium. However, dolomite lime should not be used on acidic soil, as it can make the soil more acidic. Apply dolomite lime to the soil in the fall or winter when the soil is dry.

5. Use Compost

Compost is an excellent source of organic matter that can help to raise the soil pH level. Compost has a neutral pH level and will not raise the soil pH level too high. Add compost to the soil in the spring or fall. Compost will improve the soil structure and provide essential nutrients to the plants.

6. Grow Cover Crops

Cover crops such as clover, alfalfa, and buckwheat can help to raise the soil pH level. Cover crops add organic matter to the soil, which helps to improve the soil structure and raise the soil pH level. Plant cover crops in the fall and let them grow through the winter. In the spring, till the cover crops into the soil.

Plants That Need High pH Soil

Some plants require a high pH level to grow and produce better yields. Here is a list of plants and their corresponding pH value requirements:

1. Blueberries: Blueberries require a pH level between 4.0 and 5.0 for optimal growth.
2. Azaleas: Azaleas thrive in a pH level between 4.5 and 6.0.
3. Rhododendrons: Rhododendrons prefer a pH level between 5.0 and 6.0.
4. Potatoes: Potatoes do best in a pH level between 5.0 and 6.0.
5. Sweet Potatoes: Sweet potatoes require a pH level between 5.6 and 6.5.
6. Carrots: Carrots grow best in a pH level between 5.5 and 7.0.
7. Radishes: Radishes prefer a pH level between 6.0 and 7.0.
8. Spinach: Spinach requires a pH level between 6.0 and 7.5.
9. Broccoli: Broccoli prefers a pH level between 6.0 and 7.5.
10. Cabbage: Cabbage thrives in a pH level between 6.0 and 7.5.
11. Cauliflower: Cauliflower requires a pH level between 6.0 and 7.5.
12. Brussels Sprouts: Brussels sprouts prefer a pH level between 6.0 and 7.5.
13. Peppers: Peppers do best in a pH level between 6.0 and 8.0.
14. Tomatoes: Tomatoes require a pH level between 6.0 and 7.0.
15. Beets: Beets thrive in a pH level between 6.0 and 7.5.
16. Swiss Chard: Swiss chard requires a pH level between 6.0 and 7.5.
17. Beans: Beans do best in a pH level between 6.0 and 7.5.
18. Cucumbers: Cucumbers prefer a pH level between 6.0 and 7.0.
19. Melons: Melons require a pH level between 6.0 and 7.5.
20. Squash: Squash thrives in a pH level between 6.0 and 7.5.

By understanding the pH level requirements of these plants, you can adjust your soil’s pH levels to create the optimal growing environment for them.