Easy to grow, and often fragrant and colorful, geraniums are a favorite for planting in patio containers and window boxes. One of our most popular geraniums is the Mosquito Shoo Geranium, which is said to repel mosquitoes for about 10 square feet. It releases the pleasant oil of citronella aroma. Many gardeners plant several of these geraniums in containers near porches and patios where people gather in the summer months. Other geraniums are known for bearing flowers throughout the summer months. They look great in containers by themselves or paired with other plants. When selecting geraniums to buy online, take note of their light requirements, height, bloom time and hardiness zone.