Fertilising guide
How to fertilise Camellia 'Donation' (Camellia × williamsii 'Donation')— schedule & NPK
Also called Donation camellia.
More about camellia 'donation'
About Camellia 'Donation'
Camellia × williamsii 'Donation' · also called Donation camellia · flowering
'Donation' is one of the most reliable and free-flowering williamsii camellias, smothered in large semi-double orchid-pink blooms in early spring. It is an upright evergreen shrub that, unlike many japonica types, drops spent flowers cleanly. Hardier and more forgiving than C. japonica, it still needs acidic, free-draining soil and dappled shade with steady summer moisture.
Growth habit: Vigorous, upright, densely bushy broadleaf evergreen shrub; free-flowering in early to mid spring on the previous year's wood, with self-cleaning spent blooms.
What fertiliser camellia 'donation' actually wants — and why
Camellia 'Donation' 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 camellia 'donation': 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 camellia 'donation', 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 camellia 'donation':
Feed with an ericaceous fertiliser after flowering in spring to fuel new growth and next year's buds, with an optional light early-summer feed. Stop feeding by late summer to let growth harden, and avoid any lime-based products that raise soil pH. 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 camellia 'donation' 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 camellia 'donation'
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for camellia 'donation'. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water camellia 'donation' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the camellia 'donation' watering schedule.
Signs you are over-feeding camellia 'donation'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for camellia 'donation':
- 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 camellia 'donation'
- 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 camellia 'donation' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush camellia 'donation' 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 camellia 'donation'
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 camellia 'donation' — frequently asked questions
What fertiliser does camellia 'donation' 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. Camellia 'Donation' 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 camellia 'donation'?
Feed with an ericaceous fertiliser after flowering in spring to fuel new growth and next year's buds, with an optional light early-summer feed. Stop feeding by late summer to let growth harden, and avoid any lime-based products that raise soil pH. Feed with an ericaceous fertiliser after flowering in spring to fuel new growth and next year's buds, with an optional light early-summer feed. Stop feeding by late summer to let growth harden, and avoid any lime-based products that raise soil pH. 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 camellia 'donation'?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for camellia 'donation'. The variable that actually matters is pH, not concentration.
What does over-feeding camellia 'donation' 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 camellia 'donation' 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 camellia 'donation'?
Flush camellia 'donation' 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
- Camellia 'Donation' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water camellia 'donation' — 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 2464 fertilising guides in the Growli library