Fertilising guide
How to fertilise Chinese Sweetgum (Liquidambar acalycina)— schedule & NPK
Also called Chinese Sweetgum, Chinese Storax.
More about chinese sweetgum
About Chinese Sweetgum
Liquidambar acalycina · also called Chinese Sweetgum, Chinese Storax · flowering
A graceful deciduous tree from central and southern China, offering five- to seven-lobed glossy leaves that emerge bronze-purple in spring before turning deep green, then brilliant scarlet to burgundy in autumn. Slightly more compact than American sweetgum, it is increasingly popular in temperate gardens for its outstanding multi-season ornamental value and relatively pest-free nature.
Growth habit: Upright, conical to broadly pyramidal deciduous tree with attractive layered branching.
Watch for — Chlorosis on alkaline soils: Yellowing between leaf veins indicates iron or manganese deficiency caused by high soil pH. Test pH and lower it with sulphur or acidifying fertiliser; apply chelated iron in acute cases.
What fertiliser chinese sweetgum actually wants — and why
Chinese Sweetgum is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.
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 sweetgum: 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 sweetgum, 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 sweetgum:
Feed in early spring with a balanced slow-release fertiliser or well-rotted compost mulch. Young trees benefit from annual feeding; avoid high-nitrogen feeds in late summer as these delay hardening-off and increase frost susceptibility. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when chinese sweetgum 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 sweetgum
Half strength is the safe default for chinese sweetgum — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water chinese sweetgum first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the chinese sweetgum watering schedule.
Signs you are over-feeding chinese sweetgum
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for chinese sweetgum:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding chinese sweetgum
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full chinese sweetgum care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of chinese sweetgum with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for chinese sweetgum
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
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 sweetgum — frequently asked questions
What fertiliser does chinese sweetgum need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Chinese Sweetgum is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed chinese sweetgum?
Feed in early spring with a balanced slow-release fertiliser or well-rotted compost mulch. Young trees benefit from annual feeding; avoid high-nitrogen feeds in late summer as these delay hardening-off and increase frost susceptibility. Feed in early spring with a balanced slow-release fertiliser or well-rotted compost mulch. Young trees benefit from annual feeding; avoid high-nitrogen feeds in late summer as these delay hardening-off and increase frost susceptibility. Treat that as sparingly through the growing season between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for chinese sweetgum?
Half strength is the safe default for chinese sweetgum — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding chinese sweetgum look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding chinese sweetgum year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of chinese sweetgum?
Flush the pot of chinese sweetgum with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Chinese Sweetgum care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water chinese sweetgum — 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 scilla siberica
- How to fertilise chionodoxa luciliae
- How to fertilise camassia leichtlinii
- All 8452 fertilising guides in the Growli library