Pork Tenderloin With Roasted Plums

1 lb Italian plums or 1 lb black plums (4-6 plums) or 1 lb red plum , pitted and cut into sixths (4-6 plums) 2 sprigs fresh rosemary , plus more for garnish[...]

2 pork tenderloin (each about 3/4 pound) 1 lb baby carrots 2 lbs new potatoes , cut in half (16 to 20) 1 medium onion , cut into wedges 6 cloves garlic 1[...]