Rhapis gracilis Seeds | Slender Lady Palm
LATIN NAME: Rhapis gracilis
COMMON NAME: Slender Lady Palm
Plant Profile
Each leaf carries a handful of narrow, pointed segments that are cut apart to the base of the blade rather than merely toothed, and the segment tips are slightly uneven, which gives the frond a hand-made look. The leaves are borne on slender green stalks that persist after the blade dies, so an older cane wears a skirt of old leaf bases. New shoots come from a creeping rhizome, and the plant builds into a dense, many-stemmed clump rather than a single trunk.
The genus is dioecious, with pollen flowers and seed flowers on separate plants. Inflorescences are short, much-branched and tucked among the leaf bases, and the small flowers are yellowish rather than showy. Because seed is only set where a female grows within reach of pollen, a garden clump of a single sex carries flowers every year and fruit rarely. The fruit is a small, round berry that ripens pale and holds one hard kernel.
Cultivation is mostly about low light. This palm takes more shade than almost any other in the genus’s trade and grows well in a courtyard, a north-facing porch or a corridor that never receives direct sun. The clump works at the base of a wall, in a large container beside a door, or under the canopy of bigger trees where little else thrives. Old leaves can be trimmed to show the canes, but leaving them in place keeps the base of the clump cool and holds a little moisture.
Science & Biotechnology
The kernel ripens on a lipid reserve dominated by saturated acids, principally lauric and myristic acid, which is the usual pattern in palm endosperm and the reason palm kernels keep well in warm, humid conditions. Palm tissues also carry calcium oxalate crystals and tannin-type polyphenols, so cut surfaces darken quickly as the phenolics oxidise. In tissue culture the genus is propagated from embryos and from young inflorescence tissue through somatic embryogenesis, which produces uniform clonal palms and is the standard route for multiplying selected stock. Ectomycorrhizal fungi have been tested in potting mixes to improve establishment.
Uses & Benefits
A palm seedling does not start with a fan. The first blade to appear is the eophyll, an entire, strap-shaped leaf with a rounded tip, and only later blades begin to pleat and divide. In this species the sequence is slow and worth watching: the first strap leaf is followed by broader catch leaves, and the first genuinely split frond appears well after the plant has built a short stem. A seedling sold as a miniature fan palm is usually still in its strap-leaf phase.
Growing from Seed
The rhizome creeps just below the surface and throws up new canes at intervals, so an old clump widens steadily and can be divided with a spade. The persistent fibrous sheaths at the base of each cane are tough and slow to rot, which is why established plants look matted and dark at ground level. Division of a mature clump is the quickest way to increase stock and the only way to be sure of the sex of the plants.
Palm seed loses viability quickly, so clean the fruit and sow it without delay. Use a deep pot, because the young palm sends a single heavy radicle straight down before any shoot appears, and fill it with a mix of loam, leaf mould and coarse grit in equal parts. Place each seed about two centimetres deep and keep the pot at a steady warm temperature with the mix moist but never wet, since a cold, soggy medium rots the kernel.
Move each seedling up when it has made its fourth leaf and the roots show at the drainage holes, using the same gritty mix in a slightly larger pot. Water freely in growth and let the surface dry a little between waterings; feed lightly in the warm months and not at all in the cool ones. Scale insects, mealybugs and red spider mite are the usual troubles indoors, and all of them are worse in still, dry air. Check the undersides of the split segments regularly.
Our Take
If you have a dark corner and no patience for plants that sulk, this is the palm to try. Keep it warm, keep it out of direct sun, and do not overwater a cool pot. Collectors of the genus usually grow it beside Rhapis multifida, windmill palm, Chinese fan palm and European fan palm, all of which tolerate more exposure than this one.
Related Reading
Gardeners who grow Slender Lady Palm often pair it with these related subjects: