The leaves of my camellia plants are yellowinging. Is there anything I can do to make them healthy again?
Answers:
First answer is likely the problem, but if that is the case, that your soil is too alkaline, you can add epsom salts to amend the soil. "To lower pH, common sulfur is the least expensive choice, though ferrous sulfate and aluminum sulfate are sometimes recommended instead. Ferrous sulfate, which also adds iron to the soil, is of the most help to plants that show yellow leaves as well as overall poor health. You'll also lower the pH of alkaline soil over time by regularly applying organic amendments such as compost and manure." (why are red and yellow bell peppers so expensive?