The premise is incorrect. Staple crops like taro, yam, breadfruit (ulu), and coconut thrive in Samoa's tropical climate—but they also grow in warmer coastal regions of New Zealand (e.g., Northland, Bay of Plenty, Gisborne). While NZ is temperate overall, microclimates allow these "tropical" plants to flourish. Many Māori and Pasifika communities cultivate them successfully. So they grow abundantly in both nations, not just Samoa.