How to Balance pH for New England Aster

Balancing the pH for New England aster is crucial for the plant’s optimal growth and health. This guide will provide you with a comprehensive step-by-step approach to testing, amending, and maintaining the soil pH to create the perfect environment for your New England aster to thrive.

Soil Testing

The first step in balancing the pH for New England aster is to test the soil. This will help you determine the current pH level and whether it falls within the ideal range of 6.0 to 7.0. You can purchase a soil testing kit from a local garden center or online and follow the instructions to test your soil.

Soil Amendment

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If your soil pH is too high (alkaline), you can add elemental sulfur or aluminum sulfate to lower it. For acidifying 10 square feet of soil by one pH unit, mix in 1.2 pounds of elemental sulfur or 2.5 pounds of aluminum sulfate. If your soil pH is too low (acidic), you can add lime to raise it. For raising the pH by one unit in 10 square feet, mix in 5 pounds of dolomitic limestone or 7 pounds of calcitic limestone.

Waiting and Retesting

After amending the soil, wait for a few weeks and then retest the soil pH. It may take some time for the pH to adjust, so be patient and monitor the changes.

Maintaining pH Balance

new england aster 2Image source: Pixabay

To maintain the pH balance, add compost regularly to your soil. Compost helps maintain a healthy balance of nitrogen, phosphorus, and potassium, which is essential for plant growth.

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Monitoring the Plants

Keep a close eye on your New England aster plants for any signs of nutrient deficiencies, which can indicate an unbalanced pH. Symptoms include yellowing leaves, stunted growth, and poor flowering.

Advanced Tips

Shade and Temperature

New England aster prefers full sun but can tolerate partial shade. They thrive in temperatures between 60-80°F (15-26°C).


Water your New England aster regularly, providing about one inch of water per week. However, avoid overwatering, as this can lead to root rot and other diseases.


Fertilize your New England aster in the spring with a balanced fertilizer. A 10-10-10 fertilizer is a good choice, but make sure to follow the instructions on the package to avoid over-fertilizing.


Prune your New England aster in the early spring to encourage bushy growth and more flowers. Cut back the plant by about one-third to one-half.

Home Remedies

Home remedies for balancing pH include using household items like vinegar (for acidifying soil) and baking soda (for raising soil pH). However, it’s essential to use these items sparingly and in small quantities, as they can affect the soil pH quickly and dramatically.

When using home remedies, start with a small amount and monitor the results closely. For example, you can mix 1 cup of vinegar or 1 tablespoon of baking soda into 1 gallon of water and apply it to the soil around your New England aster plants. Repeat this process every 2-3 weeks until you achieve the desired pH level.

Remember, it’s crucial to retest the soil after each application to ensure you’re not over-correcting the pH. Maintaining the ideal pH range of 6.0 to 7.0 is essential for the health and growth of your New England aster plants.

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By following the steps outlined in this guide, you can effectively balance the pH for your New England aster plants. Regular soil testing, targeted amendments, and ongoing maintenance will ensure your plants thrive and produce beautiful blooms season after season.

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