A recent study has evaluated heirloom tomato varieties to determine which are best suited for commercial and small-scale production in Hawai'i's unique growing conditions. The findings offer valuable insights for local farmers and gardeners seeking high-quality, flavorful tomatoes that are well-suited to the region's climate and soil conditions.
Heirloom tomatoes are prized for their rich flavors and diverse colors but can be challenging to grow in tropical environments due to disease pressure, heat stress, and soil variability. Historically, the tomato industry has operated within distinct market domains—fresh and processing—which has facilitated targeted research tailored to the specific needs of each supply chain. A major goal of 20th-century breeding was to develop cultivars that could endure postharvest handling throughout the supply chain
This study evaluates 29 tomato cultivars across three market classes—traditional heirlooms (TH), hybrid heirlooms (HH), and commercial hybrids (CH), measuring factors such as yield, fruit quality, and resistance to local pests and diseases. Results highlight several top-performing varieties that demonstrate strong adaptability and high market potential in Hawai'i.
The study suggests that integrating hybrid heirloom varieties into Hawaii's tomato production could enhance both yield and disease resilience. However, preserving the unique flavors and qualities of traditional heirlooms remains important. Future breeding programs might focus on combining the desirable traits of both heirloom types to develop cultivars optimized for Hawaii's specific conditions
According to co-author, Ted Radovich, "Heirloom tomatoes aren't just about nostalgia—they're about flavor, diversity, and now, adaptability for Hawai'i's farmers. It's about bridging tradition and innovation on-farm."
Dr. Kantar is an associate professor in the Department of Tropical Plant and Soil Sciences at the University of Hawaii, Manoa. He specializes in plant breeding and genetics & genomics.
