Acrocarpus fraxinifolius Seeds | Pink Cedar
LATIN NAME: Acrocarpus fraxinifolius
COMMON NAME: Pink Cedar, Mundani
Plant Profile
The leaf explains the Latin epithet: large, twice-compound blades carry a dozen or more paired side branches, each lined with small leaflets, so the whole crown looks like an ash or a fern-leafed tree rather than a typical pod-bearer. The tree drops its leaves in the dry season and comes back in a flush of soft green, which makes the pink cedar a useful marker of the local monsoon calendar wherever it is planted.
Because the best pink colour and form sit in chosen parent trees, growers root semi-hard leafy cuttings under a mist bench, lifting them with bottom heat and a rooting aid rather than waiting on variable seed. The clone holds the parent’s straight stem and clean heart, so a row of cuttings matches a row of sawn boards later. Seed still has its place where the goal is a windbreak or a mixed amenity planting.
In its home range the pink cedar is planted along avenues and in tea and coffee estates, where its light canopy gives shade without smothering the crop below and its quick growth closes a gap in a few seasons.
The fruit is a long, flat, brown pod that hangs in clusters and, as it dries, twists along its length to spill flat, winged seeds that catch a breeze and travel a short way from the parent. The wing is the dispersal tool and also the nurseryman’s friend, because the seed is easy to handle and to space once the pod is opened by hand.
Science & Biotechnology
The wood is light, easy to work and stable enough to peel, which put pink cedar on the map as a plywood and packing timber; the chemistry of the bark hints at why the tree also drew a little biomedical interest.
The bark carries flavonoid and tannin compounds that extractors have screened for antioxidant and astringent use, a side line that keeps the tree in the phytochemistry literature even though timber pays the bills. None of this replaces the wood economics, but it explains why a forestry species also appears in papers on plant extracts from the Ghats.
Uses & Benefits
Acrocarpus fraxinifolius is one of the few fast trees whose sawn board shows a clear pink to rose-red heartwood, and that colour is why it is called pink cedar even though it is a legume, not a true cedar. The hue deepens with age and light, so a fresh board looks almost salmon and a floor laid years ago reads as warm brick, a distinction buyers spot the moment they see the stack.
Growing from Seed
The wild tree favours the moist deciduous forests along the Western Ghats and the warmer Himalayan foothills, on deep soil that holds moisture through a long, hot spell. It reaches for light in those crowded forests, which explains its straight, quick bole, and it follows stream lines and the cooler slopes rather than the dry, open plain. That site memory is why a plantation on the right ground outruns one on flat, tired land. In a garden well outside its range the same rule holds: give it moisture and shelter and it rewards the grower with fast, clean growth; give it drought and it sulks.
The seed is hard and winged, and the tree wants warmth from the first day, so the bed belongs in a heated frame in a cool climate and in light shade in a hot one.
Soak the seed in warm water overnight to soften the coat, then sow it on a mix of loam and sharp sand just under the surface, keeping the bed moist and warm. The wing need not be removed, but the seed should lie flat so the root goes down and the stem up without a loop; a crowded tray only produces leggy seedlings that lag once planted out.
Move each seedling to its own tube once the second true leaf shows, and grow it on in bright light until it stands at the height of a pencil, then set it out at a spacing that lets one stem dominate. For other warm timber legumes compare scented rosewood, Indian rosewood, the kassod tree of cassia siamea, and the silk tree of albizia.
Our Take
Pink cedar is the legume to grow when you want colour in the board as well as speed in the field. Soak the winged seed, prick out early by leaf count, and train one stem; the tree will reward you with a straight, rose-hearted log that needs little more than a sharp plane to show its best face.
Related Reading
Gardeners who grow Pink Cedar often pair it with these related subjects: