Why are black flies swarming your orange tree?

Black flies are likely swarming your orange tree due to the presence of aphids or other pests that produce honeydew, a sugary substance that attracts them. Additionally, the tree's new growth and blooms can emit scents that draw these flies in. High humidity and warm temperatures can also contribute to increased black fly activity around the tree. To manage the situation, consider inspecting your tree for pests and using appropriate treatments if necessary.