Ideal pH for Roses

While it is true that roses are heavy feeders and rely on proper fertilizing for their growth, they also require proper pH. Soil pH will varyvaries depending on a number of factors, including geography. Online resource, Rose Gardening Made Easy states that western states tend to have more alkaline soils, northeast and southern, more acidic and the Midwest more neutral. But even if your level of pH is off the mark, it's possible to get it in the right range to enjoy growing roses in your yard.

Soil Testing
- In order to determine the pH of your soil, conduct a soil test. Soil test kits are available in garden centers, where samples are sent off and results returned. Alternatively, take a sample to your local county extension office. Be sure to take a soil sample for each planting area as nutrients may vary, even within the same landscape.
Ideal pH for Roses
- According to the Ohio State University Extension, roses grow best in soil with a pH between 5.5 and 7.0.
Alkaline pH
- Alkaline soils, those above 7.0 are deficient in iron and often result in yellow foliage and poor plant growth, according to Rose Gardening Made Easy. To lower the pH of alkaline soils, add sulfur; apply one pound for every 100 square feet for ranges between 7 and 7.5; two pounds for every 100 square feet for ranges between 8 and 8.5 and three pounds for every 100 square feet for ranges over 8.5, according to Ohio State University Extension.
Acidic pH
- Acidic soils, those below 5.5 are deficient in lime. To amend the soil, add 7 to 8 lbs. of lime to every 100 square feet.

What Are the Treatments for a Rose Bush?

Miniature Roses with Yellow Leaves

Growing Roses

Ideal pH for Roses

Soil Testing

Ideal pH for Roses

Alkaline pH

Acidic pH