Are your tomatoes black on bottom? It's probably tomato blossom end rot (tomato end rot). Here's how to identify, prevent, and treat blossom end rot.| The Spruce
Raising the pH of soil can become necessary when the soil is too acidic, or when growing plants that prefer alkaline soil. Here is how it’s done.| The Spruce
Soil pH is not a nutrient, but a plant suffers nutritionally when the ground it is growing in has the wrong pH. Find out why and how to correct it.| The Spruce