If you have a hot and sunny spot try the trumpet vine or campsis with bright orange tubular blooms that the humming birds love. If you have a cooler location a clematis vine will thrive if you can shade the roots with a small shrub or mulch. A clematis such as Nelly Moser with large blooms is easier to keep under control than a faster growing clematis with smaller blooms. You can prune back either of these vines every spring so they get a fresh start and will not outgrow the 8 foot support. If you really need something evergreen look for a small leaf ivy plant that will cover the post and stay green all year. Keep growing, Marianne Binetti