Fertilising guide
How to fertilise white double camellia (Camellia japonica 'Alba Plena')— schedule & NPK
Also called white double camellia, Alba Plena camellia, White Formal Double Camellia.
More about white double camellia
About white double camellia
Camellia japonica 'Alba Plena' · also called white double camellia, Alba Plena camellia · flowering
'Alba Plena' is one of the oldest Camellia japonica cultivars in Western cultivation, prized for its perfectly formed formal double pure white flowers produced from late winter through spring. The blooms are tightly layered with no visible stamens. A slow-growing, compact evergreen shrub well suited to containers, courtyards, and sheltered acid-soil borders.
Growth habit: Slow-growing, compact, upright to rounded evergreen shrub with dense, glossy dark foliage. One of the slower-growing japonica cultivars; well suited to long-term container culture.
What fertiliser white double camellia actually wants — and why
white double camellia is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for white double camellia: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed white double camellia, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For white double camellia:
Apply ericaceous/camellia fertiliser starting after flowering in late spring through to July. A balanced slow-release ericaceous granular feed in spring suits container specimens. Do not fertilise after midsummer — late feeding produces soft growth vulnerable to frost. Never use feeds containing calcium or lime. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
The dormant-season rule matters more than the exact interval: skip feeding entirely when white double camellia is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for white double camellia
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for white double camellia. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water white double camellia first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the white double camellia watering schedule.
Signs you are over-feeding white double camellia
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for white double camellia:
- Brown, scorched leaf margins from too strong or too frequent a dose.
- White salt crust on the soil surface.
- Soft, lush growth that fruits or flowers poorly.
Signs you are under-feeding white double camellia
- Yellowing leaves with green veins (iron chlorosis from high pH).
- Weak growth, poor cropping and an overall pale, stressed look.
- Stunted new shoots in spring despite adequate water and light.
If the symptoms point at watering, light or roots rather than nutrition, the full white double camellia care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush white double camellia with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Organic vs synthetic feeds for white double camellia
Organic options
Composted pine bark, pine-needle mulch, used coffee grounds and an organic ericaceous feed gently maintain acidity. UK: Vitax or Westland Ericaceous; US: Espoma Holly-tone or Dr. Earth Acid Lovers. Slow, soil-improving, hard to overdo.
Synthetic / liquid feeds
A liquid or granular ericaceous feed — UK: Miracle-Gro Ericaceous, Vitax or Westland; US: Miracle-Gro Acid-Loving Plant Food or Espoma Holly-tone. Pair with rainwater and an acidic mulch for it to work.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising white double camellia — frequently asked questions
What fertiliser does white double camellia need?
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves. white double camellia is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
How often should I feed white double camellia?
Apply ericaceous/camellia fertiliser starting after flowering in late spring through to July. A balanced slow-release ericaceous granular feed in spring suits container specimens. Do not fertilise after midsummer — late feeding produces soft growth vulnerable to frost. Never use feeds containing calcium or lime. Apply ericaceous/camellia fertiliser starting after flowering in late spring through to July. A balanced slow-release ericaceous granular feed in spring suits container specimens. Do not fertilise after midsummer — late feeding produces soft growth vulnerable to frost. Never use feeds containing calcium or lime. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
What strength of feed for white double camellia?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for white double camellia. The variable that actually matters is pH, not concentration.
What does over-feeding white double camellia look like?
Brown, scorched leaf margins from too strong or too frequent a dose. White salt crust on the soil surface. Soft, lush growth that fruits or flowers poorly. Feeding white double camellia an ordinary fertiliser, or growing it in hard tap water / limey soil, is the defining mistake — it triggers lime-induced chlorosis (yellow leaves, green veins) no amount of feeding fixes until the pH comes down.
Should I flush the soil of white double camellia?
Flush white double camellia with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Keep reading
- white double camellia care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water white double camellia — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
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- All 6887 fertilising guides in the Growli library