The swingle citrumelo in zone 7 are impressive. They survived dips to 6F. They are used like any lemon. In this video they are grown beside prague and Thomasville. Look at that huge yield! I was shocked they came through the cold with flying colors. My tree does have trifoliate leaves demonstrating its genetics where that cold hardiness comes from. My tree came from Mckenzie farms. Most growers in zone 7 are using incadecent Christmas lights and bagging their trees for protection. Note the fruit on praque in the video are towards the bottom of the plant. That fruit on prague set closest to the ground where it was warmer. @KS_razerback that further adds to your theory that the cold temps impact pragues fruit set more than other cold hardy citrus Prague Citsuma hardy sweet citrus . The gentleman in the video did a great job growing these!
