This week's gardening column addresses the importance of neutral pH in your garden soil, as well as why "princess trees" are ...

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The color of hydrangea flowers can change from pink to purple and blue by tweaking the soil. How do other plants react to those changes? Sydney Kozak explored just that. Her project, “Does changing ...

Anyone who has picked up an instructional gardening book has gleaned that it might be important to test your soil’s pH before embarking on any major planting project—but too often gardeners skip this ...

One of the biggest factors affecting the health of plants in your garden is the pH of the soil, which is a measure of its acidity or alkalinity. A pH of 7.0 is neutral while that above 7.0 is alkaline ...