Need Fragrant 'Wall of China'
I am in zone 7b, on the Eastern shore of Virginia. Across the street from my home are 8 giant 200 foot chickensheds, each containing thousands of broiler chickens.
I looking to plant a living fragrance factory beside the road in order to mitigate this smell and provide attractive blooms. The species and cultivars need to be such that there is continuous blooming from early spring to late fall( cold temps should dampen the smell enough during winter). About the best I could put together are gardenias, osmanthus fragrans, and josee lilacs(you deadhead and they come back supposedly) with some "Virginian" stock planted each year around their bases until they take off. A few butterfly bushes may be included just to attract their namesake.
Another problem is they cannot be poisonous to grazing animals... this eliminates sweet peas, many bulbs, and many of the great smelling datura and nightshade species.
Thanks for any input you may have!