If you are looking for something to add a charming, unexpected element to your flower arrangements, bulrushes are up to the task. Though bulrushes are rarely used in traditional flower arrangements, they lend a bouquet a rustic, unpretentious air while complementing roses and wildflowers alike. If you want an earthy-looking bouquet, try pairing the bulrushes with wildflowers. If you want to convey a message of exotic vivacity, try using them in an arrangement of bright tropical flowers. Or, for a minimalist approach, balance the bulrushes with some Dracaena spikes and a single large bloom.
Look for the flowers you wish to arrange, deciding how prominent you wish for the bulrushes to be in comparison to the rest of the bouquet. If you want them to be an accent, three may be enough. If you want the bulrushes to be a main feature of the bouquet's structure, then perhaps six or more will be more appropriate, depending on the desired size of the arrangement.
Lay out your selection of flowers in accordance with how tall you want them to be in your arrangement. To add layers of interest in your arrangement, it is a good idea to cut the pieces of your bouquet into different heights to give the final product a raked effect. Because of their natural height and powerful appearance, bulrushes tend to be placed at the back of arrangements, though it is not necessary to do so. Interspersing them within the rest of the bouquet also looks lovely.
Cut the flowers to the desired height. Cut the stems at an angle, holding them underwater. This will help the plants retain and absorb moisture better, thus helping them look alive longer.
Fill the tub with water and place the cut stems of the plants into the water.
Fill the vase with water and place it on a level surface.
Arrange the flowers in the vase with taller flowers toward the back. If you do not know where to start, think of how the plants look in nature -- they are relaxed, yet on show. So should your bouquet be. Once you have a general idea of how the finished product will look, consider adding accent flowers as well. Tiny vines or lilac blossoms that spill over the lip of the vase add an easy elegance while contrasting exquisitely with the striking quality of the bulrushes.