Choosing palms for Australian gardens, courtyards and pots

A photo sells a single clean trunk, so that is what gets ordered, then planted along a side fence where the job was screening. Two years later the fronds sit above the fence line and the trunk is bare. The mistake was made at the first decision, not the last.

Palms are slow to correct: they grow from one point at the top, so you cannot cut one back into shape, and a frosted or wind burnt palm wears the damage for years. Decide clumping or solitary, then how cold the site gets, then how much light the spot holds. The palm range runs from understorey clumps to large specimens.

Clumping or solitary decides everything else

A clumping palm suckers from the base, so the plant is a colony of canes of different ages. It stays furnished at ground level, and a damaged cane can be cut out while the clump closes over. A solitary palm has one trunk and one crown; as it gains height it sheds its lower fronds and the canopy walks away from you.

Privacy or planting beneath existing trees means clumping. A courtyard shape, or a pair flanking a driveway, means solitary. Asking one to do the other's job is an expensive mistake.

Clumping palms for screening and understorey

The Golden Cane Palm is still the workhorse in warm coastal gardens. Set plants 1.5 to 2 m apart for a continuous screen. It wants steady moisture, regular feeding and warmth; starve it or let it dry out and the leaflets go pale yellow. It is not a cold climate plant.

Where the bed is narrow, Bamboo Palm (Chamaedorea seifrizii) fits better: slim canes, shade tolerant, happy in a strip a few hundred millimetres wide, and the Florida Form is denser again. For shaded courtyards, Lady Palm is slow, tidy and durable. Macarthur Palm and Areca triandra suit warm humid gardens. Note that multi planted Bangalow or Alexandra is several seedlings raised together, not a true clump. Weigh palms against the wider screening range, because they give height and movement but rarely density.

Solitary palms as specimens

Bangalow Palm comes from wet forest gullies on the east coast and behaves like it: give it moisture, shelter from hot wind and overhead cover while young. Planted in threes or fives at staggered spacing it reads as a grove, not a row. Alexandra Palm looks similar but is the warmer climate cousin, and less forgiving of cold.

Foxtail Palm has the opposite temperament: full sun, sharp drainage, and real tolerance of dry spells once established. It is self cleaning: old fronds drop rather than hang. Solitaire Palm handles narrower spots and part shade, and Flamethrower Palm pushes a red new frond in a sheltered courtyard.

Be realistic about the biggest specimens: Bismarck Palm, a fan palm, and Canary Island Date Palm, a feather palm, want serious space, full sun and drainage, and the date palm carries hard spines at the frond bases. Neither belongs in a small courtyard; for a single anchor plant cross check the feature tree range.

Cold tolerance, said plainly

Most palms sold in Australia are subtropical or tropical, so southern buyers need to filter hard. Cold alone is rarely the killer: it is cold plus soil that stays wet all winter, which rots the roots and then the crown. The most dependable choice is Windmill Palm, from the mountains of central China, with a fibrous trunk coat and real tolerance of frost and of wet winters. It suits Canberra, the Adelaide Hills, cooler parts of Victoria and the New South Wales tablelands.

European Fan Palm is the next call for cold, dry, well drained sites. Dwarf Palmetto is very cold tolerant, very slow and trunkless. Cabbage Tree Palm ranges naturally down the east coast into Victoria and takes frost once established. Chinese Fan Palm, Canary Island Date Palm and Mexican Fan Palm cope with frost in open sun; Kentia takes light frost but resents repeated hard frost.

Young plants are far more vulnerable than established ones, so a small pot going into a frost prone garden in autumn is a poor bet. The growing point sits at the top of the trunk, so a frozen spear that then rots is usually fatal. Coconut, Carpentaria, the Licuala fan palms and most Dypsis and Areca species in the tropical range are warm climate plants.

Indoors, and why kentia is different

Kentia Palm handles low light better than almost any other palm, for a structural reason. It is endemic to Lord Howe Island, where juveniles spend years under closed forest canopy, so it evolved to stay in credit on very little light. It grows slowly and holds each frond for a long time, so it is never pressed to replace foliage.

Two things kill palms indoors: too little light and too much water. A palm left standing in a cover pot with no drainage rots at the base within a season. Lift the nursery pot out, water, drain fully, put it back. Lady Palm, Bamboo Palm and Chamaedorea atrovirens are next most tolerant of dim rooms.

Golden Cane is sold for indoors but wants bright light and picks up spider mite in dry air, so it does better on a covered patio. Majesty Palm suits it less again: it grows on riverbanks and wants full light and constant moisture. Judge by light first, and see the wider indoor range if the spot is dark.

For courtyards and pots, Kentia, Lady Palm and Dwarf Date Palm are dependable, with Bottle Palm and Spindle Palm for frost free gardens. A 400mm or 500mm pot will hold a kentia for years.

Planting and establishment

Palms move better than most trees, but only into warm soil. New roots come from the base of the trunk, not from cut root ends, so a palm in cold ground sits idle and is more likely to rot. Late spring into summer is the window for most of the country. More on timing in our guide to when to plant trees and shrubs.

Keep the root ball intact and plant at the depth it grew in the pot, never deeper, because burying the base rots the trunk. Water in hard to collapse air pockets, and keep mulch off the trunk. On exposed sites, brace with a padded timber frame. Never screw or nail into a palm: there is no cambium, so the wound never closes.

Water deeply and often through the first summer: the root ball dries faster than the soil around it. Then feed with a palm fertiliser containing potassium and magnesium. Sandy coastal soils run short of potassium, which shows as orange flecking on the oldest fronds. Established palms belong in the low maintenance range, but the first two summers do not.

The three failure modes

Cold damage

Frost hits the newest growth first. If the spear pulls out cleanly, the growing point has gone. Do not strip damaged fronds over winter, because even a browned frond shelters the crown. Wait for warm weather to assess, and do not fertilise a cold, sulking palm.

Frond burn from dry wind

Hot northerlies and salt laden coastal wind dry leaflets faster than the roots can replace the water, giving crisp brown tips and edges. Deep watering ahead of a heat run, thick mulch and shelter from the prevailing wind do more than any spray. Our notes on coastal planting, salt and wind cover exposed sites.

Cutting green fronds off

This is the one that quietly starves palms. A palm withdraws potassium and other mobile nutrients from older fronds before discarding them, so cutting a frond that still holds green takes food off the plant. Repeated trimming into a feather duster shape narrows the trunk permanently, because trunk diameter is set at the growing point. Remove only fronds that are completely brown.

When not to buy a palm

If you want a clipped hedge with a flat top and defined face, palms cannot do it. If you need cover at ground level and above at once, a solitary palm fails as it lifts. In a frost pocket, only the hardy handful above will work. Under a solid eave with no daylight, even kentia declines.

Think twice before hanging a palm over a pool: frond and fruit drop is constant. Cocos Palm and Mexican Fan Palm self seed, so check your council's weed guidance before planting either near bushland. And if nobody can water reliably for the first two summers, buy something else.

Matching the palm to the job

Work back from the job: clumping for screening, solitary for specimens, Windmill Palm where it frosts, Kentia and Lady Palm for shade and pots, Foxtail for hot open sun. Water, potassium and patience do the rest, and the fronds stay on the plant. Every order ships farm-direct with flat $99 delivery in QLD, NSW, VIC, SA, ACT and WA, a $399 minimum order, and the 30-Day Healthy Plant Guarantee.