Large bull ants have infested my staghorn. It hangs from an oak tree in the shade.
Do Ants Harm Staghorn Ferns
Certified GKH Gardening Expert
Generally speaking, ants by themselves aren't a serious problem. However, the presence of ants could signify a more serious insect problem such as honeydew-producing aphids, mealy bugs or scale. Ants and aphids, in particular, have a symbiotic relationship (ants protect aphids in return for honeydew) so the longer the ants reside in your fern the more chance you have of attracting aphids. I would try hosing down the staghorn fern with a strong blast of water to wash the ants out and relocate the fern to another ant-free tree.
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