What flowers last all the way through from spring until autumn?
Someone else said it first, but you can’t go wrong with marigolds. They are hardy, beautiful, and will grow in nearly any conditions. They will bloom from spring til first frost. Yes, they are annuals, but I do not have purchase marigolds every year. When the plants start to die back in the fall, pick off any old dried flower heads and open one up. They are full of seeds on the inside! I keep marigolds seeds every year, plant the seeds indoors in February, and by mid to late March, they are ready for placing in the ground. Petunias also come in a variety of colors and are hardy annuals. As for pansies, I usually plant these in November, as they don’t really like warm weather. I live in the southern USA, and my pansies are about finished up. They can’t take the heat. I usually have pulled my pansies up by the end of May. If you live in a cool climate, you may be able to keep pansies during the summer, but they do not tolerate very warm temps well.