About Siam Tulip
A striking tropical plant from the ginger family that produces tulip-like flower bracts in gorgeous shades of pink, purple, white, and bicolor — rising gracefully on slender stems above a clump of broad, canna-like foliage. The showy bracts (which are actually modified leaves) are long-lasting on the plant and in cut-flower arrangements, making Siam Tulip a prized plant for both garden display and the Philippine flower trade. Despite the exotic look, it's surprisingly adaptable to Philippine conditions. Siam Tulip belongs to the Zingiberaceae family and originates from Thailand, Cambodia, and mainland Southeast Asia; cultivated as an ornamental and cut flower throughout the tropics..
Siam Tulip is gaining popularity among Filipino gardeners and the cut-flower industry. Philippine flower farms in Benguet and Bukidnon grow Curcuma commercially for Metro Manila flower markets and wedding arrangements. The rhizomes are available during the planting season at Quezon Avenue nurseries, Dangwa flower market, and from online sellers. Filipino garden designers are using it increasingly in shaded garden beds and container plantings for a touch of exotic elegance. Its seasonal, dormant nature can confuse new growers — it's not dead in the dry season, just sleeping.
Also known as: Hidden Lily, Jewel of Thailand.
Popular Varieties
- Curcuma alismatifolia (standard pink-purple bracts — most common)
- Curcuma alismatifolia 'Chiang Mai Pink' (deep pink bracts)
- Curcuma alismatifolia 'Snow White' (pure white bracts)
- Curcuma alismatifolia 'Siam Splash' (pink with green tips)
- Curcuma petiolata (Hidden Lily — related species with similar bracts)
How to Plant Siam Tulip in the Philippines
Siam Tulip can be propagated through rhizome division, offsets. The recommended method is rhizome division at the start of the rainy season.
Propagation Steps
- Step 1: Dig up the plant after the foliage has died back (during the dry dormant period).
- Step 2: Separate the finger-like rhizomes — each section should have at least one growing bud.
- Step 3: Let cut surfaces dry for a day.
- Step 4: Plant rhizomes 5-8 cm deep in rich, well-draining soil with the bud pointing upward.
- Step 5: Water lightly until growth begins, then increase watering. New shoots emerge as the rainy season starts.
Care Guide
Sunlight
Partial shade to filtered sun (bright indirect light is ideal; morning sun with afternoon shade works well. Avoid harsh midday sun.). Position your siam tulip where it receives the right amount of light for healthy growth in Philippine conditions.
Water
Water regularly during the growing and flowering season (rainy season) — keep soil consistently moist. Reduce watering as leaves begin to yellow and die back. Stop watering during dormancy. Adjust frequency during the Philippine rainy season when humidity is higher and soil stays moist longer.
Temperature & Humidity
Ideal temperature range: 24-33°C (well-suited to Philippine lowland temperatures during the growing season). High humidity preferred — thrives during the Philippine monsoon season The warm, humid Philippine climate is well-suited for growing siam tulip outdoors or indoors.
Fertilizer
Balanced fertilizer (14-14-14) every 3-4 weeks during active growth. High-phosphorus feed (10-30-10) when buds begin forming to encourage larger, more colorful bracts.
Pruning
Cut spent flower stems at the base to redirect energy to the rhizomes. Allow foliage to die back naturally at the end of the season — do not cut green leaves as they feed the rhizomes for next season.
Toxicity & Safety
Non-toxic. Related to edible turmeric (Curcuma longa), though this ornamental species is grown for flowers, not culinary use.
Common Problems & Solutions
No flowers emerging
Cause: Rhizomes too small (underdeveloped), insufficient light, or planted too late in the season
Solution: Plant at the very start of the rainy season. Ensure bright indirect light. Feed with phosphorus-rich fertilizer. Young rhizomes may need a year to reach flowering size.
Leaves and flowers dying back in dry season
Cause: Natural dormancy — Curcuma is deciduous and goes dormant in the dry season
Solution: Completely normal. Allow foliage to die back, stop watering, and let rhizomes rest in dry soil until the next rainy season.
Root rot
Cause: Poor drainage or waterlogging during dormancy
Solution: Ensure excellent drainage. Do not water during dormancy. Lift and store rhizomes in a dry, cool spot if soil stays too wet.
Pale or washed-out bracts
Cause: Too much direct sun bleaching the color
Solution: Move to a shadier spot with filtered light. The richest bract colors develop in bright indirect light, not harsh direct sun.
Frequently Asked Questions
How do you care for Siam Tulip in the Philippines?
Siam Tulip needs partial shade to filtered sun (bright indirect light is ideal; morning sun with afternoon shade works well. avoid harsh midday sun.). Water regularly during the growing and flowering season (rainy season) — keep soil consistently moist. reduce watering as leaves begin to yellow and die back. stop watering during dormancy.. Feed with balanced fertilizer (14-14-14) every 3-4 weeks during active growth. high-phosphorus feed (10-30-10) when buds begin forming to encourage larger, more colorful bracts.. The Philippine climate with temperatures of 24-33°C (well-suited to Philippine lowland temperatures during the growing season) works well for this plant.
How do you propagate Siam Tulip?
The recommended method is rhizome division at the start of the rainy season. Dig up the plant after the foliage has died back (during the dry dormant period). Separate the finger-like rhizomes — each section should have at least one growing bud.
Is Siam Tulip toxic to pets or children?
Non-toxic. Related to edible turmeric (Curcuma longa), though this ornamental species is grown for flowers, not culinary use.
Can Siam Tulip grow in containers in the Philippines?
Yes, Siam Tulip grows well in containers and is suitable for balcony and indoor gardening in Metro Manila condos and apartments. Use a pot with drainage holes and appropriate potting mix.
What are common problems when growing Siam Tulip?
Common issues include: No flowers emerging (caused by rhizomes too small (underdeveloped), insufficient light, or planted too late in the season — plant at the very start of the rainy season. ensure bright indirect light. feed with phosphorus-rich fertilizer. young rhizomes may need a year to reach flowering size); Leaves and flowers dying back in dry season (caused by natural dormancy — curcuma is deciduous and goes dormant in the dry season — completely normal. allow foliage to die back, stop watering, and let rhizomes rest in dry soil until the next rainy season); Root rot (caused by poor drainage or waterlogging during dormancy — ensure excellent drainage. do not water during dormancy. lift and store rhizomes in a dry, cool spot if soil stays too wet).
Growing siam tulip in Manila? Tag us @urbangoesgreen on TikTok and show us your garden!