No such shrunken seeds were found in self-pollinated control plants. Read the paper: Haploid facultative parthenogenesis in sunflower sexual reproduction The authors noticed that shrunken seeds ...

In order for a seed to survive and grow into a strong plant it needs water, light, suitable temperature, air and time. If you wanted to grow a sunflower, you will need to: Plant sunflower seeds ...

If you planted your first sunflower seed in a paper Dixie cup in kindergarten and watched it grow, you're probably hooked on these easy-to-grow, showy flowers for the garden. Sunflowers are ...