They are loaded with blooms but the buds do not open. Please advise about this and fertilizing. Sometimes when a camellia is loaded with buds, the flowers are imperfect because they're crowded. You can remedy this by thinning extra buds. This way the shrub can put its energy into developing remaining buds into large flowers that aren't touching each other.
Camellias require a highly organic and slightly acidic soil.
Good drainage is a must. A well-draining spot that receives morning sun and some filtered shade is ideal. It's best to protect the plants from cold winds and hot afternoon sun. November to March is the ideal time to plant camellias. The top of the rootball should be slightly above ground level.