You may have done nothing wrong at all. This type of problem happens as a result of weather issues or camellia bud mite infestations. Weather issues is a catch all phrase that indicates that the plant became stressed due to wide swings in temperatures (common in early Fall or late Spring) or by lack of uniform soil moisture (too dry, then too wet, then too dry, etc).
Have temperatures been unusually high and then low recently? Have you noticed any insects on the buds that have fallen (you may have to open them up by removing the layers one at a time). |
Here is a link that might be useful: Camellia Info
