Blow-ball

Country clock,
What time will you tell?
Which seeds tick, which tock,
Which seeds to my lover fly?


In the language of flowers, dandelion means Faithfulness. Lovers use dandelion seeds to send messages to one another.
If all the seeds are blown off in one go, then a wish may come true (is that where birthday cake wishes come from?); if some remain that's the number of children you will have.