Fertilising guide
How to fertilise White Tabernaemontana (Tabernaemontana alba)— schedule & NPK
Also called White Tabernaemontana, White Milkwood, Jasmine Gardenia.
More about white tabernaemontana
About White Tabernaemontana
Tabernaemontana alba · also called White Tabernaemontana, White Milkwood · tropical
A large, fragrant tropical shrub or small tree native to Central America, Mexico, Cuba, and Colombia, with glossy evergreen foliage and abundant five-petalled white pinwheel flowers produced almost year-round. Grown for its ornamental value and heady jasmine-like scent. Suitable for tropical gardens and large containers in warm conservatories.
Growth habit: Large, dense evergreen shrub or small tree with a spreading, rounded crown
Watch for — Leaf yellowing and drop: Yellowing lower leaves often indicate overwatering or waterlogged roots. Improve drainage and reduce watering frequency. General yellowing of multiple leaves can also signal nutrient deficiency — apply a balanced fertiliser and check soil pH is below 7.0.
What fertiliser white tabernaemontana actually wants — and why
White Tabernaemontana 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 white tabernaemontana: 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 tabernaemontana, 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 tabernaemontana:
Apply a balanced liquid fertiliser (10-10-10) monthly during spring and summer. In autumn, switch to a low-nitrogen, high-phosphorus feed to encourage flower bud formation. Withhold fertiliser in winter. Repot with fresh compost every 2–3 years to replenish nutrients. Treat that as monthly 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 white tabernaemontana 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 tabernaemontana
Half strength is the safe default for white tabernaemontana — 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 white tabernaemontana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the white tabernaemontana watering schedule.
Signs you are over-feeding white tabernaemontana
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for white tabernaemontana:
- 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 white tabernaemontana
- 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 white tabernaemontana care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of white tabernaemontana 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 white tabernaemontana
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 white tabernaemontana — frequently asked questions
What fertiliser does white tabernaemontana 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. White Tabernaemontana 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 white tabernaemontana?
Apply a balanced liquid fertiliser (10-10-10) monthly during spring and summer. In autumn, switch to a low-nitrogen, high-phosphorus feed to encourage flower bud formation. Withhold fertiliser in winter. Repot with fresh compost every 2–3 years to replenish nutrients. Apply a balanced liquid fertiliser (10-10-10) monthly during spring and summer. In autumn, switch to a low-nitrogen, high-phosphorus feed to encourage flower bud formation. Withhold fertiliser in winter. Repot with fresh compost every 2–3 years to replenish nutrients. Treat that as monthly 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 white tabernaemontana?
Half strength is the safe default for white tabernaemontana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding white tabernaemontana 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 white tabernaemontana 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 white tabernaemontana?
Flush the pot of white tabernaemontana 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
- White Tabernaemontana care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water white tabernaemontana — 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 yellow oleander
- How to fertilise giant thevetia
- How to fertilise lucky nut
- All 6887 fertilising guides in the Growli library