You can make a striking round floral arrangement from the flowers that you grow in your garden. Cut the flowers early in the morning before the sun is on them. A round arrangement will work well for a centerpiece or as a gift. It is important that the arrangement is full from every view point. Roses, irises, hydrangeas, peonies and lilies are flowers that work well in round centerpieces. Add asters, baby's breaths and statices as filler flowers.
Choose a round container that matches the flowers you have gathered. If you are planning to use the arrangement for a dinner party, make sure the container and flowers are short enough for your guests to see over the top of it from a sitting position.
Use a sharp knife to cut a piece of floral foam to fit into the bottom of the container. If you are using a basket, place a plastic liner inside of it. Fill the foam with water until it is soaked. Use adhesive floral tape to secure the foam inside of the container.
Place several 4- to 6-inch-tall sprigs of greenery into the sides and top of the floral foam. Cut a main flower to a length of 6 to 8 inches. Insert it into the center of the top of the foam. The flower should have a straight, upright stem.
Cut five more main flowers and insert them into the sides of the foam around the rim of the container. They must be the same length as the centered flower at the top of the foam.
Add three more shorter main flowers in the top sides of the foam. They should be slightly shorter than the upright flower.
Place more flowers into the foam that are shorter than the main flowers. Turn the arrangement to be sure that all views are even. Make sure that gaps are filled in with flowers or greenery. You can hold the floral arrangement in front of a mirror to be sure it has a circular, even shape.