Turnera ulmifolia, popularly called Yellow Alder, Sage Rose or West Indian Holly, is a compact, fast-growing evergreen shrub valued for its non-stop display of buttercup-yellow, five-petalled flowers. Each bloom lasts only a single morning, opening at sunrise and closing by midday, but the plant flowers profusely almost year-round in India's warm climate.
It forms a bushy mound of toothed, deep-green leaves and thrives in heat, drought and poor soils, making it an easy choice for borders, hedges and containers. Naturalised across much of tropical India, it self-seeds readily and is a reliable nectar source that attracts bees and butterflies.
Specifications
| Family |
Passifloraceae (formerly Turneraceae) |
| Native region |
Mexico, Central America and the Caribbean |
| Mature height |
0.6-1 m (occasionally up to 1.5 m) |
| Mature spread |
0.6-1 m |
| Growth rate |
Fast |
| Foliage |
Evergreen; lance to ovate, toothed, deep-green leaves |
| Flower colour |
Bright yellow, often with a darker centre |
| Flower season |
Nearly year-round in warm regions; peak in spring and monsoon |
| Climate zone |
Tropical and subtropical; warm frost-free regions of India |
Care guide
| Sunlight |
Full sun for best flowering; tolerates light afternoon shade |
| Watering |
Moderate; water when topsoil dries. Drought-tolerant once established; avoid waterlogging |
| Soil / mix |
Well-drained sandy to loamy soil; tolerates poor and slightly alkaline soils |
| Temperature |
Thrives at 20-35 C; frost-sensitive, protect below 10 C |
| Humidity |
Adapts to both humid and dry conditions |
| Fertilizer |
Light feeding; a balanced fertiliser once a month in the growing season is sufficient |
| Pruning |
Trim lightly after flushes to keep bushy and compact; remove leggy or spent stems |
| Repotting |
Repot container plants every 1-2 years in spring when rootbound |
| Propagation |
Easily grown from seed (self-seeds freely) or from softwood/semi-hardwood cuttings |
| Pests & problems |
Generally pest-free; watch for aphids and occasional caterpillars |
| Difficulty |
Easy |
Uses
- Bright, low-maintenance flowering shrub for borders, beds and informal hedges
- Container and balcony plant in warm Indian cities
- Pollinator garden plant that attracts bees and butterflies
- Ground cover and erosion control on dry, sunny banks
Growing tips
Plant at the start of the monsoon or in spring for quick establishment. Choose the sunniest spot you have, as flowering drops sharply in shade.
During the hot, dry months water in the early morning and mulch to conserve moisture. Reduce watering in winter and shield young plants from cold north-Indian frost. Pinch growing tips on young plants and shear lightly after each flush to keep the bush dense and full of bloom.