For a container-grown camellia, feed in early spring. Camellia japonica belongs to the group that flowers in late winter and early spring.
How to fertilize Camellia japonica
For a container-grown Camellia japonica, use ericaceous fertilizer in early spring, follow the package label, and stop feeding by the end of July.
Check for active growth
When to fertilize
Do not feed camellias later than the end of July. RHS warns that excessive and late-summer feeding can lead to bud drop.
Follow the product label
Fertilizer type and dose
Use an ericaceous fertilizer for a container Camellia japonica. RHS names soluble azalea, camellia or rhododendron food and Chempak Ericaceous Food as examples.
Follow the dilution rate and application frequency printed on the chosen product label. RHS does not supply one universal Camellia japonica dose.
Inspect a stressed plant before feeding
When not to fertilize
Bud drop after excessive or late-summer feeding is the specific warning in the RHS guide. Inspect watering, soil acidity and timing before treating a camellia as nutrient deficient.
Sources
- Royal Horticultural SocietyQuick Facts; Choosing camellias; Ongoing Care > Feeding; Overwintering; Problems
- Royal Horticultural SocietyPlant profile; Growing Conditions; How to Grow; Suggested planting locations