Thanh nhãn from Ca Mau is selling for as much as 110,000 dong a kilogram at the farm gate, more than triple the price of common longan varieties, because the specialty fruit remains chronically short of supply even as buyers line up in advance.
Thanh nhãn from Cà Mau sells for up to 110,000 dong
The price premium matters because it points to a rare agricultural product that has moved beyond novelty into a locally protected, high-margin crop with clear economic value for farmers. In a fruit market where mainstream longan types such as nhãn da bò and nhãn xuồng fetch only 15,000 to 30,000 dong a kilogram at peak season, thanh nhãn’s sustained 80,000 to 110,000 dong range gives growers a far stronger income profile and a buffer against the price volatility that typically hits horticulture at harvest time.
What makes the story more compelling for investors and rural planners is that the demand is not being driven by marketing alone. Thanh nhãn has a distinct production base in Hiệp Thành, a coastal sand-soil area in Cà Mau, where growers say the slightly saline soil helps produce a sweeter, firmer fruit with a thicker skin, higher flesh ratio and better storage life. Those characteristics matter commercially: the fruit can be shipped farther, keeps its texture in cold storage for roughly two weeks, and is easier to move through long distribution chains without losing quality.
The variety also has a formal brand moat. It was granted exclusive trademark protection in 2014, and local authorities now want to build a geographical indication for Thanh Nhãn Cà Mau. For investors, that combination of protected branding and place-specific quality is important because it can support pricing power, deter imitation and help formalize a premium product category in a sector often defined by commodity pricing.
Supply, however, remains the limiting factor. Local farmers say output is consistently insufficient to meet demand, forcing sales to be concentrated among repeat customers and pre-orders rather than open market channels. Even with expanded cultivation to more than 80 hectares in Hiệp Thành, the crop is still described as a specialty fruit rather than a mass-market orchard product. Yields are decent but not excessive, with one hectare producing around 5 tons on average, suggesting the economics depend more on price than scale.
That makes the crop attractive but also constrained. Households that have planted the fruit report stable returns, and local officials say earlier investment projects generated profits of more than 500 million dong per hectare a year. But the same economics can be hard to replicate quickly because growers are reluctant to use chemical inputs to force higher output, preferring biological methods to protect roots and maintain long-term productivity. The result is a supply model that preserves quality, but keeps volume tight.
The broader implication is that Vietnam’s specialty fruit sector is increasingly rewarding products with clear regional identity, better shelf life and strong consumer recognition. That mirrors the rise of Yen Du persimmons in Ha Tinh, another local fruit that has become a meaningful income source as demand for premium produce rises. For Ca Mau, the challenge now is not proving that Thanh Nhãn can command a premium, but whether local authorities can expand acreage and planting material without diluting the very traits that make the fruit scarce — and valuable.
| Entity | Gains | Losses |
|---|---|---|
| Thanh nhãn growers in Hiệp Thành | ▲Premium prices | ▼Limited output |
| Local authorities in Cà Mau | ▲Rural income growth | ▼Pressure to scale supply |
| Buyers/consumers seeking specialty fruit | ▲Access to unique produce | ▼Higher purchase prices |
| Common longan producers | ▲— | ▼Price competition from premium fruit |
