How to keep wild rabbits off plants?

We live in front of a field now overrun with wild rabbits. They keep coming in through the hedge separating the field from our property and eating the heads off all our flowers. We've tried putting netting and such around plants, but our garden is too big to cover every plant and it would ruin the beauty of the... show more We live in front of a field now overrun with wild rabbits. They keep coming in through the hedge separating the field from our property and eating the heads off all our flowers. We've tried putting netting and such around plants, but our garden is too big to cover every plant and it would ruin the beauty of the plants.
We have a dog that likes running around the garden so we really don't want anything that might harm him should he go near it.

Is there anything we can do to keep them away?
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