Sterculia nobilis Seeds | Pheng Phing

Pheng Phing (Sterculia nobilis) with woody scarlet follicles split open to show glossy black seeds — Pheng Phing (*Sterculia nobilis*): Malvaceae, the chestnut-flavoured forest tree whose roasted seeds are a Cantonese autumn treat.

LATIN NAME: Sterculia nobilis

COMMON NAME: Pheng Phing

Plant Profile

Pheng Phing, the apple-y tree of the Cantonese markets, is a handsome evergreen of ten to twenty metres from the southern Chinese and Southeast Asian forests, carrying large palmate bright green leaves and a wide rounded crown. In spring it hangs nodding clusters of small, odd, red-brown flowers whose scent draws flies rather than bees, and by autumn these have become the tree’s signature: heavy boat-shaped woody follicles that split along one edge to reveal a row of glossy black, conker-like seeds nested in scarlet.

Those seeds are the harvest. Roasted or boiled they taste faintly of chestnut, and in Guangdong they are a seasonal delicacy, the ingredient in braised duck dishes and in market snacks sold under the name fung ngan go, phoenix-eye fruit, for the eye-like seed that looks out of each split follicle.

Science & Biotechnology

Systematically it sits in the sterculia group of the mallow family, the lineage that also yields Pang Da Hai, the swelling mucilaginous seed of a related species used across Chinese pharmacies as a soothing throat tea, and the chemistry of mucilage and tannin runs through the whole genus. The seeds’ food value is starch and oil in a protective matrix, and the splitting follicle is a display built to advertise ripe seed to the birds and mammals that disperse it.

Fly pollination of its malodorous flowers places it among the trees that trade scent for an unpopular crowd, a recurring theme in the family’s floral biology.

Uses & Benefits

As a garden tree it offers evergreen shade of good quality, a structural winter silhouette, and a genuine annual harvest that children and cooks compete for. In warm frost-free gardens it is a productive curiosity; in its home villages it is simply part of the autumn food calendar.

The roasted seed’s chestnut note, the ornamental scarlet follicles and the family’s pharmaceutical connections give the species three separate claims on a planter’s attention, and the tree’s broad canopy earns it a place in parks as well as orchards. In good years a single tree can fill a basket twice over.

Growing from Seed

The seeds are big and straightforward. Extract them from split follicles and sow fresh, three to four centimetres deep in a rich, free-draining compost at twenty-five degrees; germination comes within two to four weeks and is usually strong. The seed tolerates only brief storage, a month at most, cool and dry.

Seedlings grow fast in tropical warmth and want full sun as they establish. Pot on steadily, since the young taproot runs early, and plant out with room for a twenty-metre crown. It is strictly a frost-free tree; established plants take short dry seasons with calm, but a freeze ends them.

Our Take

A shade tree that pays in roasted chestnut-flavoured seeds and scarlet winter pods. Fresh seed, real heat and a garden big enough for its crown: the recipe is short.

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