Q.Why Are My Tangelos Rudy/brownish Looking
I live in Charleston, SC so the weather is warm March thru Oct/Nov. I bought the tree less than a year ago and transplanted it into a large container for the summer. We plan to plant in the ground this coming spring. Some of the fruit was bright orange but most was brownish.
Certified GKH Gardening Expert
This issue may clear up once the tree is in the ground, but you'll need to be sure all the optimal growing conditions are met because prevention works best in this situation. Here are a couple articles that will help you track down the problem and another on how to care for the tree:
https://www.gardeningknowhow.com/edible/fruits/citrus/citrus-fruit-brown-rot.htm
https://www.gardeningknowhow.com/edible/fruits/citrus/citrus-alternaria-rot.htm
https://www.gardeningknowhow.com/edible/fruits/tangelo/tangelo-tree-information.htm