Tours of hydroponic vegetable and fruit farms have become increasingly popular in Lâm Đồng Province's Đà Lạt City.
Due to demand for safe vegetable sources, farmers in Đà Lạt in recent years have turned to organic farming and hydroponics, a method of growing plants in nutrient liquid without soil.
Plant seeds are placed in a mixture of coconut fiber and rice husks, and since they provide no nutritional value, they allow the plants to absorb only nutrients filtered from liquid pipes.
Compared to traditional cultivation, hydroponic plants do not require weeding or fertilising, thus saving time.
High-tech green products were originally meant to be sold in local markets and other distribution channels, but most of them are now sold directly to visitors at farms, Lê Quốc Dũng, a local resident, told Sài Gòn Giải Phóng (Liberated Sài Gòn) newspaper.
Lê Quốc Đức, owner of the Đức Tín hydroponic vegetable garden, said that he sometimes can sell 100 kilos of products from visitors who pick the vegetables themselves.
"Opening my garden for tourists for free benefits both of us. Visitors can learn about how plants are grown in a safe environment and I can earn extra money for my family," he said.
Many visitors say they prefer picking vegetables from the fields instead of buying them from farmers, Lê Hữu Phan, a resident of Ward 9, said.
Phan, a farmer and tour guide, shows visitors around his 3,000 sq-m farm daily, which consists of rows of black tomatoes and cherry tomatoes and 100-kilo pumpkins, among others.
His family was one of the first to join the Xuân Hương Agrotourism Village, a project managed by Lâm Đồng Province's People's Committee to boost tourism.
Hydroponic farms in Đà Lạt typically attract hundreds of visitors daily and up to 1,000 people on weekends.
"During the holiday period, my family's garden welcomes up to 4,000 visits," said Nguyễn Văn Dương, who has a one-hectare hydroponic farm in Ward 5.
Dozens of farms have adopted hydroponic methods and produced a variety of signature vegetables and fruits in an effort to enhance tourists' experiences.
Phan Thu Hương, 29, a tourist, said that she had previously purchased fresh vegetables grown in Đà Lạt.
"It's more fascinating to visit high-tech farms and see for myself how the vegetables are taken care of," she said.
With farmers as tour guides, the experience for tourists is fun and authentic.
Diễm Thúy, 22, said that she had fallen in love with Đà Lạt more than ever because of her experiences, including being involved in seeding and picking ripe vegetables.
She said she would recommend the city to like-minded people who enjoy "tourism with a twist".
"I've never missed visiting a place more than Đà Lạt. I got to travel to famous attractions, feel the city's vibe, and experience locals' lives," she added.
Even so, experts have said that professional agro-tourism services should be launched to promote Đà Lạt tourism.
Hoàng Ngọc Huy, an official from the provincial Department of Culture, Sports, and Tourism, said the city wanted to offer hospitality and tourism courses to farmers to help them understand tourist demand and create better services.
Launching homestay services in hydroponic farms would be another example of a new tourism service.
More agro-tourism villages are expected to open in Đà Lạt as well as other districts in Lâm Đồng Province, including Đức Trọng, Lạc Dương, and Đơn Dương, according to Nguyễn Thị Bích Ngọc, deputy director of the provincial Department of Culture, Sports, and Tourism.
Together with conventional attractions such as Love Valley, Trúc Lâm Temple, Đà Lạt Flower Garden and Cẩm Ly Waterfall, among others, the new services are expected to draw more local and international tourists to Đà Lạt and other districts in Lâm Đồng.