Red Flowering Perennial With Geranium Type Leaves – What Is It?

Ask the Expert: Can you help me identify my flowering perennial? Hi, I have a perennial with geranium type leaves. The flowers are red, very small and bell shaped. They are on long stems, approximately 12 to 18 inches tall. It usually flowers beginning in June(?) and July. This year it did very well and flowered into August. Your help would be greatly appreciated. Thank you, Miriam