Best used for
- Flowering avenues on city roads and campus loops
- Wide medians above 3 m where a small canopy tree is wanted
- Public parks, institutional frontages and civic beautification
- Contrast planting against evergreen neem or karanj rows
Avenue tree
Amaltas
The classic Indian flowering avenue tree — cascading golden racemes through the hottest weeks of the year, on a medium tree with well-behaved roots.
About Amaltas
Cassia fistula times its display for the moment Indian cities look worst: late April and May, when everything else is dust-coloured and heat-stressed. That single characteristic is why it appears on so many civic beautification lists, and why a mixed avenue of neem and amaltas outperforms either species alone — one gives shade, the other gives the season.
Practically, it is an easy tree. Moderate size, non-aggressive roots, high drought tolerance once established, and no serious pest issues. It works on medians where a full canopy species would be a liability, and it takes urban air well.
Two design notes. It is deciduous and looks sparse in late winter, so it should not carry a screening function. And the pods — cylindrical, up to 600 mm, hard — drop over months; on a footpath or a parking bay that means real sweeping load, so put it over planted beds and grass instead.
Do not use where
- Narrow medians below 2.5 m
- Sites where pod litter is unacceptable — the long brown pods drop and persist
- Waterlogged ground
| Botanical name | Cassia fistula |
|---|---|
| Family | Fabaceae |
| Also called | Golden shower tree, Indian laburnum, Bahava, Konnai |
| Mature height | 8–12 m |
| Spread | 8–10 m |
| Growth rate | Moderate |
| Sunlight | Full sun |
| Water need | Low to moderate |
| Soil | Well-drained loam or sandy soil; dislikes heavy waterlogged clay |
| Climate | Tropical and subtropical; thrives in the dry heat of North and Central India |
| Flowering | Pendulous golden racemes, April–June — the peak-summer flowering tree |
| Spacing | 8 m on centre |
| Planting window | June–August |
| Establishment | 2 monsoons |
| Maintenance | Low |
| Pollution tolerance | High |
| Drought tolerance | High |
| Transplanting | Moves reasonably at small girth; large specimens are risky. |
Care
Season-by-season care calendar
| Season | What to do |
|---|---|
| February–March | Prune before bud break to shape young trees. Late pruning removes the flowering wood and costs a whole season of bloom. |
| April–June | Peak flowering. Water new trees weekly; established ones need nothing and flower better when slightly dry. |
| July–September | Plant now. Clear weeds from basins and maintain mulch. |
| October–January | Collect fallen pods from paved surfaces. No feeding required. |
Troubleshooting
Common problems and what causes them
| Symptom | Cause | Fix |
|---|---|---|
| Little or no flowering | Pruned at the wrong time, too much shade, or excess nitrogen from adjacent lawn feeding | Prune only in late winter, ensure full sun, and keep lawn fertiliser away from the tree basin. |
| Heavy pod litter complaints | Species characteristic | Site over planted beds, not paving. Pod removal at green stage is possible on specimen trees but not economic on an avenue. |
| Leaf caterpillars in monsoon | Seasonal defoliators | Tolerate on established trees; treat young stock only if defoliation exceeds about a third of the canopy. |
Plant with
Species that work alongside it
avenue trees
Neem
Azadirachta indica
The most reliable avenue tree in India: evergreen shade, extreme drought tolerance, no serious pest problems and roots that behave near pavement.
- Height15–20 m
- WaterLow
- MaintenanceLow
avenue trees
Tabebuia (Pink Trumpet Tree)
Tabebuia rosea
The tree that turns whole streets pink for three weeks in late winter — medium-sized, well-behaved and increasingly the signature avenue tree of Bengaluru and Hyderabad.
- Height8–15 m
- WaterModerate
- MaintenanceLow
flowering shrubs
Bougainvillea
Bougainvillea glabra / spectabilis
The hardest-working colour plant in India: months of bract colour on almost no water, provided you resist the urge to feed and irrigate it.
- Height1 m clipped, 3–4 m as a shrub, 8 m+ as a climber
- WaterLow. Over-watering is the single commonest cause of a green, flowerless plant
- MaintenanceModerate
hedges and screens
Golden Duranta
Duranta erecta "Golden Edge"
The bright chartreuse hedge that gives Indian landscapes their colour block — fast, cheap, endlessly clippable and visible from a distance without any flowers at all.
- Height0.3–2 m as clipped; 3 m unpruned
- WaterModerate
- MaintenanceHigh — this is a clipping-dependent plant
Amaltas — frequently asked questions
When does amaltas flower in India?
April to June across most of the country, peaking in May. In the south, flowering can start in late March; in the north it runs into the first monsoon showers.
Is amaltas good for medians?
Yes, on medians of 3 m and wider. It stays modest in size, has non-aggressive roots and flowers at the season when medians are most visible.
How long before amaltas starts flowering?
Typically three to five years from planting a nursery sapling. Buying a larger tree shortens the wait but does not eliminate it — settle the tree in first.
Related
Guides and services
Corridor execution
Highway and Expressway Plantation
Avenue, median, embankment and interchange planting for expressway and highway packages — designed for survival at handover, not just for the drawing.
Service detailCore service
Landscape Execution and Plantation
Full softscape execution for campuses, townships, industrial sites and public realm — from soil and levels through planting, lawns and irrigation to a working maintenance handover.
Service detailAdvisory
Greenery and Plantation Consulting
Advice before execution — species strategy, plantation planning, tender scope review and honest assessment of what a site and its maintenance budget can actually sustain.
Service detailSpecifying Amaltas on a project?
We supply, plant and maintain across India. Send the site conditions and quantities and we will confirm whether this species is the right call before you order it.