Fertilising guide
How to fertilise Burrawang Palm (Macrozamia spiralis)— schedule & NPK
Also called Burrawang Palm, Burrawang, Spiralling Macrozamia.
More about burrawang palm
About Burrawang Palm
Macrozamia spiralis · also called Burrawang Palm, Burrawang · tropical
Macrozamia spiralis is a slow-growing Australian cycad native to coastal NSW, producing a short trunk and arching, dark-green fronds with spirally arranged leaflets. It tolerates dry, sandy soils and partial shade, making it a striking low-maintenance specimen for frost-free gardens. All parts are severely toxic to pets and humans.
Growth habit: Clumping rosette; short subterranean to partially emergent trunk, arching pinnate fronds to 1.5 m
Watch for — Manganese deficiency: New fronds emerge yellow or with interveinal chlorosis — common in cycads grown in alkaline soils or containers. Apply a chelated manganese supplement or a cycad-specific micronutrient spray.
What fertiliser burrawang palm actually wants — and why
Burrawang Palm 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 burrawang palm: 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 burrawang palm, 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 burrawang palm:
Apply a slow-release fertiliser formulated for cycads or palms in spring and again in midsummer. Cycads have modest nutrient needs; excess nitrogen produces lush but weak growth. Do not fertilise in autumn or winter. 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 burrawang palm 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 burrawang palm
Half strength is the safe default for burrawang palm — 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 burrawang palm first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the burrawang palm watering schedule.
Signs you are over-feeding burrawang palm
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for burrawang palm:
- 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 burrawang palm
- 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 burrawang palm care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of burrawang palm 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 burrawang palm
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 burrawang palm — frequently asked questions
What fertiliser does burrawang palm 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. Burrawang Palm 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 burrawang palm?
Apply a slow-release fertiliser formulated for cycads or palms in spring and again in midsummer. Cycads have modest nutrient needs; excess nitrogen produces lush but weak growth. Do not fertilise in autumn or winter. Apply a slow-release fertiliser formulated for cycads or palms in spring and again in midsummer. Cycads have modest nutrient needs; excess nitrogen produces lush but weak growth. Do not fertilise in autumn or winter. 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 burrawang palm?
Half strength is the safe default for burrawang palm — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding burrawang palm 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 burrawang palm 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 burrawang palm?
Flush the pot of burrawang palm 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
- Burrawang Palm care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water burrawang palm — 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 hoya pubicalyx
- How to fertilise philodendron pink princess
- How to fertilise philodendron selloum (tree philodendron)
- All 6887 fertilising guides in the Growli library