Siamese Tulip

Ian bought me some lovely tulips and irises for Mother's Day. Although I'm not technically mother to any human children, I have lots of plant children and even a little doggie child, so I graciously accepted the gift!

We were both surprised to see this anomaly arrive with the arrangement - a double-headed tulip!



That's some cool stuff. I have never seen a double-headed tulip, so I searched the Internet for information regarding why this happens. I couldn't find anything! I guess this is quite the rarity. If you know how a tulip can grow two heads - please do share!