In 2006 I planted a Dahlia seed. By the end of that growing season, the seed had grown into a 1" by 1/4" bulb. When I pulled up my bulbs today, I was amazed to find 8 new "baby" bulbs. The mother bulb is about 3" long, and the baby bulbs are anywhere from 1/2" to 2". You can see a photo of the Dahlia bulbs above. I had gently pulled away the 8 baby bulbs from the mother bulb to replant them in new pots.