Gardening is a great way to flex your creative muscle because it gives you endless opportunity to play with color, shape and space. So it's no surprise that topiary is considered a true art form. Although you might feel that you don't have the skills or the time required to train more complex topiary shapes such as this ball-headed spiral form, the good news is that you can buy pieces that are ready-grown. Plant them in large pots to decorate the terrace or set them into a border creating an eye-catching focal point. But how to keep such works of art looking as good as the day you purchased them? Provided you don't allow the topiary to get too shaggy and overgrown, giving it a "hair cut" is a relatively quick and easy job. Trim box plants between late spring and the end of the summer to avoid frost damage. Save money by learning how to create a spiral topiary and provide your garden with a focal point that you can be proud of.