Great question—it's awesome that you're focusing on sustainability in your gardening! Native plants are definitely the way to go since they support local wildlife and typically require less water and maintenance. Depending on your region, options like serviceberry, viburnum, or hazelnut can make great eco-friendly hedges. They’re attractive, provide habitat for birds and pollinators, and won’t take over your garden. I'd also recommend checking with a local native plant nursery—they usually have great advice based on your specific ecosystem.