There are a number of reasons why camellias may not flower. Some of the most common include:
Dry periods
The flower buds of camellias are initiated during late summer and early autumn so even a short spell of dryness at the roots during this period may cause a check to flower development. The plants may subsequently fail to produce flower buds, or buds may apparently be developing normally but drop as their spring flowering period approaches. Inside the aborted buds the flowers will be brown and decaying, and may even show traces of colour.
To guard against this problem, apply and maintain a good 8-10cm (3-4in) mulch of bark or leaf-litter around the plants, renewing or topping up each spring. Water thoroughly and regularly during dry periods, particularly from July onwards.
Dry situations
Camellias need a cool, moist root run which is well-drained but with ample moisture throughout the year. Occasionally plants may be in very dry wall-side situations or in small, dry beds in lawns, where they grow slowly but seldom or never flower. Move such plants to more suitable conditions during late autumn, when the weather is cool and soil conditions moist.
Feeding
Flower bud drop may occur if feeding has been excessive or carried out late in the season. Do not feed later than the end of July.
Natural drop
The shedding of small, immature flower buds may occur where a large number of flower bud clusters have formed. This is a natural process and there should still be plenty of flowers to enjoy. It is more likely to occur with double-flowered cultivars than those with single or semi-double flowers.
Links
The RHS Rhododendron, Camellia and Magnolia Group
Founded in 1945, this group is for all RHS members who share an interest in rhododendrons, camellias, magnolias and associated plants.
For more information click here
