Sai Tong Mango Tree – Golden Nam Doc Mai Thai Mango
Bring one of Thailand's prized dessert mangoes to your backyard with the Sai Tong Mango Tree, also known as Golden Nam Doc Mai or Nam Doc Mai Si Thong. This beautiful Thai mango is prized for its exceptionally sweet flavor, fragrant aroma, silky fiberless flesh, and attractive golden-yellow fruit.
Sai Tong combines the characteristics mango lovers appreciate about the Nam Doc Mai family with beautiful golden coloration. It is an excellent choice for Florida backyards, tropical food forests, home orchards, and collectors of premium Asian fruit trees.
🥭 Fruit Taste & Flavor
Sai Tong / Golden Nam Doc Mai produces fruit with a very sweet, rich and aromatic tropical flavor.
The flesh has the fragrant, floral character associated with Thai dessert mangoes and develops excellent sweetness when properly ripened.
One of its biggest attractions is its texture. The flesh is smooth, juicy, silky and virtually fiberless, creating a melt-in-your-mouth eating experience.
It is delicious eaten fresh and is also an excellent mango for Thai mango sticky rice, smoothies, fruit salads, sorbets and tropical desserts.
🥭 Fruit Size & Appearance
Sai Tong generally produces medium-sized, elongated mangoes with the elegant shape characteristic of Nam Doc Mai-type fruit.
The mango is typically long and slender with a gently curved or pointed end.
One of the most attractive characteristics of Sai Tong is its color. As the fruit matures, the skin develops beautiful yellow to rich golden-yellow coloration.
Inside, the flesh is yellow to deep yellow, with a smooth and juicy texture.
The combination of its elongated shape and golden exterior makes Sai Tong particularly attractive when displayed fresh from the tree.
🌳 Sai Tong Mango Tree Size
Sai Tong has a moderate growth habit and responds well to regular pruning.
Without pruning, the tree can eventually become large. For residential landscapes, annual canopy management can maintain a shorter, wider tree that is easier to care for and harvest.
With regular pruning, Sai Tong can generally be maintained around 8–12 feet tall in a backyard setting.
It is not a true dwarf mango, but its growth can be managed effectively with consistent pruning.
🌴 Origin of the Sai Tong Mango
Sai Tong is a Thai mango associated with the Nam Doc Mai group of mangoes.
It is commonly encountered under names including:
Sai Tong Mango
Golden Nam Doc Mai Mango
Nam Doc Mai Si Thong
Nam Dok Mai Si Thong
“Si Thong” refers to the variety's desirable golden coloration, which helps distinguish it from other Nam Doc Mai selections.
Because Thai cultivar names can be transliterated into English in several ways, customers may encounter slightly different spellings for the same or closely related mango selections.
Botanical Name: Mangifera indica
Cultivar/Type: Nam Doc Mai Si Thong
Common Names: Sai Tong, Golden Nam Doc Mai
Origin: Thailand
📅 Sai Tong Mango Fruiting Season
In Florida, Sai Tong generally fruits during the summer mango season.
Harvest commonly falls around the June–July period, although actual ripening time varies with weather, flowering, location, tree maturity and growing conditions.
In Central Florida, flowering and harvest timing can differ from South Florida because of cooler winter temperatures.
☀️ Sai Tong Mango Tree Care
Sunlight: Plant Sai Tong in full sun, ideally where it receives at least 6–8 hours of direct sunlight daily. Good sunlight encourages healthy growth, flowering, fruit production and attractive fruit development.
Soil: Plant in well-draining soil. Avoid locations where water remains around the root system for prolonged periods.
Watering: Water newly planted trees regularly while their root systems become established. Once established, mango trees are relatively drought tolerant. Allow the soil to drain between watering.
Fertilizing: Feed young trees with a fertilizer appropriate for mangoes or tropical fruit trees. Micronutrients may also be beneficial depending on local soil conditions. Avoid excessive nitrogen on mature trees because it can encourage leafy growth rather than flowering.
Pruning: Prune after harvest to control height, encourage lateral branching and improve airflow. Regular canopy management can keep Sai Tong at a convenient backyard harvesting height.
Cold Protection: Mango trees are tropical and sensitive to frost and freezing temperatures, especially while young. In Central Florida, choose a warm, protected planting location and provide cold protection whenever freezing temperatures are expected.
Container Growing: Young Sai Tong trees can be grown in large containers. Use a well-draining growing medium and provide sufficient root space. Regular pruning, feeding and careful watering will be necessary for long-term container management.
🌱 Why Grow a Sai Tong / Golden Nam Doc Mai Mango Tree?
Sai Tong is an excellent choice for gardeners who want a premium Thai dessert mango.
Its combination of intense sweetness, fragrant tropical flavor, silky fiberless flesh, elongated shape and beautiful golden color makes it both delicious and visually impressive.
It is especially appealing to anyone who already enjoys Nam Doc Mai but wants to add another distinctive Thai mango selection to their collection.
And if you love Thai mango sticky rice, growing your own Sai Tong mangoes makes this variety even more special.
Quick Growing Information
Variety: Nam Doc Mai Si Thong
Botanical Name: Mangifera indica
Common Names: Sai Tong, Golden Nam Doc Mai, Nam Doc Mai Si Thong, Nam Dok Mai Si Thong
Origin: Thailand
Fruit Size: Medium
Fruit Shape: Long, slender and elongated
Fruit Color: Yellow to golden yellow when mature
Flavor: Very sweet, rich, fragrant and tropical
Flesh: Silky, juicy and virtually fiberless
Growth Habit: Moderate and manageable with pruning
Maintained Backyard Size: Approximately 8–12 ft. with regular pruning
Fruiting Season: Generally summer; approximately June–July in Florida depending on conditions
Sunlight: Full sun, ideally 6–8+ hours daily
Soil: Well-draining
Water: Regular while establishing; moderate once established
Best For: Fresh eating, mango sticky rice, Florida backyards, tropical food forests, home orchards and Asian fruit collections
