Celosia Persian Garden is a lavender rose spike flower that grows about 24 to 30 inches tall. It looks best if fronted by something shorter like alyssum. It is also suitable for the center of large containers and for cut flowers.
Petunia Wave Carmine Velour was my favorite flower this year. It is the newest color in the Wave series of petunias. Velour is a deep, non-fading rose red. Wave petunias grow like an ocean wave that just keeps coming and coming. Planted in a raised bed, Wave Carmine branches grew over 3 feet long.
You can find more information and specific seed sources for all these varieties at All-America Selections online.
Profusion zinnia and Wave petunia plants are widely available at nurseries and garden stores. You may not find these two colors separately. Zinnias and peas are easily started from seed planted in the ground. If you cover zinnia seeds with clear plastic, it warms the soil so that they come up more quickly. I have also started tomato seeds outside in early April by placing a plastic milk jug with the bottom removed over a cluster of three or four seeds.