Zinnias

Zinnias are such rewarding flowers!  They are easy to grow from seed, they flourish even with abject neglect once germinated, and then they burst forth with bright, big blooms.  Once they start, they don't stop until frost.  They stand up to drought conditions, too.  To top it all off, they make great cut flowers that last and last.  Zinnias are excellent flowers for children to grow because they are fast-growing and don't require diligence.  Just clip off the faded ones so more will appear.