CORVALLIS – Often not considered, soil pH has as much effect on plant health as disease, insects, drought and drainage. Keeping pH in the right range for certain plants is essential, according to ...

When I started gardening, I assumed you could put seeds in dirt, add water and watch them grow into plants. That uneducated approach produced haphazard results and few vegetables. Somehow, I missed ...

The power of hydrogen is not often discussed among gardeners unless you are a chemist. Commonly known as pH, it measures of the number of hydrogen and hydroxyl ions in the soils. But enough with the ...

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 ...