Fertilising guide
How to fertilise Adolphe Audusson Camellia (Camellia japonica 'Adolphe Audusson')— schedule & NPK
Also called Japanese Camellia, Adolphe Audusson.
More about adolphe audusson camellia
About Adolphe Audusson Camellia
Camellia japonica 'Adolphe Audusson' · also called Japanese Camellia, Adolphe Audusson · flowering
A classic Japanese camellia cultivar producing large, semi-double blood-red flowers from late winter to mid-spring. An evergreen shrub with glossy dark foliage, it suits sheltered borders and containers. Considered mildly toxic to pets if foliage or flowers are ingested in quantity.
Growth habit: Upright to broadly spreading evergreen shrub
Watch for — Chlorosis: Yellow leaves with green veins signal iron deficiency from alkaline soil or hard water. Apply chelated iron feed and switch to rainwater for irrigation.
What fertiliser adolphe audusson camellia actually wants — and why
Adolphe Audusson 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 adolphe audusson 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 adolphe audusson 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 adolphe audusson camellia:
Feed with a specialist camellia or ericaceous fertiliser in early spring after flowering and again in early summer. Avoid feeding after midsummer, as this can hinder bud hardening and increase frost vulnerability. 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 adolphe audusson 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 adolphe audusson camellia
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for adolphe audusson camellia. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water adolphe audusson camellia first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the adolphe audusson camellia watering schedule.
Signs you are over-feeding adolphe audusson camellia
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for adolphe audusson 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 adolphe audusson 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 adolphe audusson camellia care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush adolphe audusson 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 adolphe audusson 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 adolphe audusson camellia — frequently asked questions
What fertiliser does adolphe audusson 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. Adolphe Audusson 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 adolphe audusson camellia?
Feed with a specialist camellia or ericaceous fertiliser in early spring after flowering and again in early summer. Avoid feeding after midsummer, as this can hinder bud hardening and increase frost vulnerability. Feed with a specialist camellia or ericaceous fertiliser in early spring after flowering and again in early summer. Avoid feeding after midsummer, as this can hinder bud hardening and increase frost vulnerability. 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 adolphe audusson camellia?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for adolphe audusson camellia. The variable that actually matters is pH, not concentration.
What does over-feeding adolphe audusson 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 adolphe audusson 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 adolphe audusson camellia?
Flush adolphe audusson 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
- Adolphe Audusson Camellia care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water adolphe audusson camellia — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise western spirea
- How to fertilise bristol ruby weigela
- How to fertilise middendorf weigela
- All 11687 fertilising guides in the Growli library