Create a whimsical fairy garden by using a rustic wooden arch with climbing vines. Choose delicate and ethereal vines like morning glory or sweet pea to cover the arch and create a magical display. Surround the arch with miniature plants, fairy houses, and whimsical decorations. Add some twinkling fairy lights and a small pond or fountain for an enchanting touch. The rustic wooden arch will provide a rustic and natural element to your whimsical fairy garden.