Fertilising guide
How to fertilise Chinese Ixora (Ixora chinensis)— schedule & NPK
Also called Chinese Ixora, Chinese Flame of the Woods, Jungle Geranium.
More about chinese ixora
About Chinese Ixora
Ixora chinensis · also called Chinese Ixora, Chinese Flame of the Woods · tropical
Ixora chinensis is a compact, evergreen tropical shrub bearing dense, rounded clusters of small, tubular orange-red to scarlet flowers almost year-round in warm climates. A popular hedge and container plant throughout Southeast Asia and subtropical landscapes, it requires bright light, acidic soil, consistent moisture, and warmth to perform at its colourful best.
Growth habit: Compact, dense, evergreen shrub with a rounded habit; freely branching and relatively slow-growing compared to Ixora coccinea.
Watch for — Iron chlorosis (interveinal yellowing): The most common issue — new leaves yellow between the veins while veins stay green. Caused by soil pH above 6.5 making iron unavailable. Acidify soil with sulphur amendments, use rainwater, or apply chelated iron. Check and correct pH before adding more fertiliser.
What fertiliser chinese ixora actually wants — and why
Chinese Ixora 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 chinese ixora: 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 chinese ixora, 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 chinese ixora:
Feed every 4 weeks during the growing season with an acidifying, slow-release or liquid fertiliser formulated for acid-loving plants (e.g. ericaceous feed). Incorporate iron chelate or a micronutrient supplement once or twice a season if yellowing between leaf veins appears, indicating iron chlorosis. Reduce feeding in winter. 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 chinese ixora 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 chinese ixora
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for chinese ixora. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water chinese ixora first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the chinese ixora watering schedule.
Signs you are over-feeding chinese ixora
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for chinese ixora:
- 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 chinese ixora
- 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 chinese ixora care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush chinese ixora 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 chinese ixora
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 chinese ixora — frequently asked questions
What fertiliser does chinese ixora 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. Chinese Ixora 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 chinese ixora?
Feed every 4 weeks during the growing season with an acidifying, slow-release or liquid fertiliser formulated for acid-loving plants (e.g. ericaceous feed). Incorporate iron chelate or a micronutrient supplement once or twice a season if yellowing between leaf veins appears, indicating iron chlorosis. Reduce feeding in winter. Feed every 4 weeks during the growing season with an acidifying, slow-release or liquid fertiliser formulated for acid-loving plants (e.g. ericaceous feed). Incorporate iron chelate or a micronutrient supplement once or twice a season if yellowing between leaf veins appears, indicating iron chlorosis. Reduce feeding in winter. 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 chinese ixora?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for chinese ixora. The variable that actually matters is pH, not concentration.
What does over-feeding chinese ixora 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 chinese ixora 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 chinese ixora?
Flush chinese ixora 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
- Chinese Ixora care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water chinese ixora — 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 neoregelia 'charm'
- How to fertilise vriesea 'christine'
- How to fertilise aechmea nudicaulis
- All 6887 fertilising guides in the Growli library