Region 14 · Asia · Af / Am
Horticulture in Southeast Asia
Equatorial heat and rain all year; there is no dormant season, so pruning, feeding and drainage are continuous. Orchids, aroids, palms and tropical fruit are the working palette.
ClimateEquatorial (Af / Am)
USDA zones11–13
Growing seasonYear-round
RainfallHigh rainfall, weak seasonality
SoilsAcidic, leached and volcanic
Frost riskGrowthRainfall
The climate, read as a season
Peak growth falls in Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec; dormancy in no true dormancy. Hard frost is confined to no hard-frost months, and the driest months are none. Those three patterns decide the planting calendar more than the annual average temperature.
| Season | Conditions | What it means |
|---|---|---|
| Spring Mar · Apr · May | Peak growth steady rain · frost-free | The main planting and sowing window. |
| Summer Jun · Jul · Aug | Peak growth steady rain · frost-free | The main planting and sowing window. |
| Autumn Sep · Oct · Nov | Peak growth steady rain · frost-free | The main planting and sowing window. |
| Winter Jan · Feb · Dec | Peak growth drier spell · frost-free | The main planting and sowing window. |
What the climate demands
- No dry season means no reset: pruning and disease control are continuous, and growth can outrun a small garden.
- High rainfall leaches nutrients and waterlogs clay; raised beds and drainage are structural, not cosmetic.
- Humidity drives fungal and bacterial disease; airflow and spacing matter more than sprays.
Signature flora
| Plant | Role | Why it is used here |
|---|---|---|
| Durian Durio zibethinus | TreeFruit | Humid; grafted trees. |
| Mangosteen Garcinia mangostana | TreeFruit | Slow; shade; humid. |
| Rambutan Nephelium lappaceum | TreeFruit | Humid; fruit. |
| Banana Musa | PerennialFruitEasy to propagate | Wind; fertile soil. |
| Coconut Cocos nucifera | PalmFruitNative | Coastal; saline. |
| Oil palm Elaeis guineensis | Palm | Plantation; drainage. |
| Rubber Hevea brasiliensis | Tree | Plantation; tapped. |
| Robusta coffee Coffea canephora | ShrubFruit | Lowland; heat. |
| Cacao Theobroma cacao | TreeFruit | Shade; humid. |
| Pepper Piper nigrum | VineHerb | Shade; trellis. |
| Vanilla Vanilla planifolia | VineEasy to propagate | Shade; hand pollination. |
| Rice Oryza sativa | VegetableAnnual | Paddy; monsoon. |
| Elephant ear Alocasia | PerennialIndoorEasy to propagate | Shade; wet. |
| Taro Colocasia esculenta | Root cropVegetable | Wet; edible. |
| Heliconia Heliconia | PerennialCut flowerEasy to propagate | Humid; spreads. |
| Torch ginger Etlingera elatior | PerennialCut flower | Shade; tall. |
| Ginger Zingiber officinale | PerennialHerb | Rhizome; shade. |
| Turmeric Curcuma | PerennialHerb | Rhizome; monsoon. |
| Frangipani Plumeria | ShrubCut flower | Fragrant; dry season. |
| Bougainvillea Bougainvillea | ShrubWater-wiseCut flower | Dry; thorns. |
| Hibiscus Hibiscus rosa-sinensis | ShrubCut flower | Heat; whitefly. |
| Ixora Ixora | ShrubCut flowerHedge | Acid; clipped hedge. |
| Dendrobium orchid Dendrobium | IndoorCut flowerEasy to propagate | Epiphyte; air movement. |
| Moth orchid Phalaenopsis | IndoorCut flower | Shade; humidity. |
| Pitcher plant Nepenthes | PerennialNative | Acid bog; humidity. |
| Tree fern Cyathea | PerennialNative | Shade; humidity. |
| Dracaena Dracaena | ShrubIndoor | Tolerates dry air. |
| Pandanus Pandanus | ShrubNative | Coastal; salt. |
| Carpetgrass Axonopus compressus | Turf | Shade; wet. |
| Bermudagrass Cynodon dactylon | Turf | Full sun. |
The eight disciplines here
| Discipline | What it looks like here | Taxa | Read |
|---|---|---|---|
| Garden Design 01 | Palette and practice for garden design in this climate. | 22 | Discipline guide |
| Floriculture 02 | Palette and practice for floriculture in this climate. | 11 | Discipline guide |
| Vegetables & Herbs 03 | Palette and practice for vegetables & herbs in this climate. | 5 | Discipline guide |
| Fruit & Viticulture 04 | Palette and practice for fruit & viticulture in this climate. | 9 | Discipline guide |
| Arboriculture 05 | Palette and practice for arboriculture in this climate. | 5 | Discipline guide |
| Turfgrass 06 | Palette and practice for turfgrass in this climate. | 2 | Discipline guide |
| Nursery & Propagation 07 | Palette and practice for nursery & propagation in this climate. | 19 | Discipline guide |
| Water-wise & Restoration 08 | Palette and practice for water-wise & restoration in this climate. | 5 | Discipline guide |
Professional bodies and standards
World Vegetable Center · International Rice Research Institute (IRRI)
Design idiom
Tropical resort, water garden, courtyard.
Sources
Other regions
East Asia · Australasia · Atlantic Europe · Continental Europe · all 16 regions