Blueberry Plants chilling necessities for southern, northern, and rabbit eye varieties. Everyone who is concerned in growing their possess fruit will finally be faced with the issue of “chill hours.” Chill hours are accumulated at temperatures between thirty two degrees F to forty five degrees F. Blueberries bring a exclusive mixture of tasty fruit and striking ornamental beauty to the garden and landscape. Blueberries are simple to grow, necessitate little care, and are seldom bothered by pests.