29. Sunflowers
No other flower says summer the way sunflowers do. And fortunately for us, these are some of the cheapest flowers you can buy . If you have a garden, plant as many sunflowers as your heart desires. Keep the inside of your home filled with these joyful flowers too. You can even use them in a welcome wreath at the front door. They grow fast, so they are easy to replenish. Even if you’re not growing them at home, chances are you’ll only spend a couple of dollars every week keeping your home full of their sunshine.