How do you treat yellow leaves on camellias?
Moreover, why are the leaves turning yellow on my camellia?
Your camellia's leaves may also turn yellow if it is has root rot. Caused by the Phytophtora cinnamomi fungus, root rot turns also stunts the plant's growth. To prevent your camellias from root rot, plant in well-drained soil since the fungus thrives in wet soil.
Similarly, you may ask, what is the best fertilizer for camellias?
Camellias don't need much fertilizer, and too much nitrogen can burn the leaves and cause them to drop off. Spread 1/2 to 1 pound of 8-8-8 or 10-10-10 slow release fertilizer over the root zone. Scratch the fertilizer into the top inch or so of soil with a garden rake and then replace the mulch.
The most common nutrient problem associated with chlorosis is lack of iron, but yellowing may also be caused by manganese, zinc, or nitrogen deficiencies. According to Schuster one way to separate iron deficiency from other deficiencies is to determine what foliage turned yellow first.