Think this is quite common throughout the country Valmac following the long winter we ve had . I think this prevented flower buds from forming fully and the poor plants are way behind.

They dont seem to know wether to produce flowers or the glossy leaves that follow and many appear to be suffering signs of nutrient deficiency that have previously been well established and free flowering.

The leaves on ours have stayed fairly healthy with regular tomato feed but the flower buds are tiny - think we may have to accept few if any flowers this year , keep up the feeds and hope this is a temporary problem.

I think it might be worth giving the plant a shot of sequestered iron tonic if the leaves are yellowing.

I agree with Bamboo. A shot of sequestrene or ericaceous fertiliser might do the trick. I find as my Camellias get older they sometimes drop buds even though the leaves are not yellow. I think sometimes they over produce. A bit like apple trees they shed some of the load. This is only a guess. Also, if there is a short dry spell at full flowering time they may drop buds and flowers, especially if other trees or shrubs near are looking for water too.