Rock a gorgeous floral wedding arch for your fall wedding! decorate your arch with the blooms in the colors of your wedding: deep red, burgundy, purple, orange, rust, fuchsia are ideal for a rich-colored fall wedding. Add bold-colored velvet or some airy neutral fabric if you want. If it’s a moody wedding, try dark blooms like black, deep purple, dark burgundy and others. You may skip the blooms and cover the arch with fall foliage and greenery of your choice, add pampas grass for a trendy touch.