Answer: I suspect there's a population of bunnies nearby who are raiding your garden at night or early in the morning. The only way to keep your plants safe is to create a barrier so the bunnies can't get to them. I make cylinders out of chicken wire and set them over my most vulnerable plants. After a while, when they discover they can't feed on the plants, the bunnies will go elsewhere to nibble. The black round things on your lantana are berries which contain seeds. These appear where flowers once were. The birds love them, so leave them on your plants.
Best wishes with your garden!
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