Why are my Pink Dahlias Yellow?

A few weeks ago I bought some Dahlias and one of them had this vibrant pink flower. I have a container garden so I potted it in regular potting soil. Watered as usual. It's doing fine except all of the new flowers that are coming up out of this same plant are a bright sunny yellow?! Is there some kind of additive or acidity need for dahlia I didn't know about? How can I get my pink flowers back?

Sptfyr2007-06-21T09:19:27Z

Favorite Answer

It's a color mutation called "sporting". You are not alone in this. It seems that pink dahlias turning yellow is pretty common.
Here is site about the color mutations.
http://www.members.shaw.ca/hydahlia/mutation.html

reynwater2007-06-21T16:39:30Z

Are the flowers yellow or are the Buds yellow. Dahlias for some reason bud yellow and bloom true colors. Fun to watch a maroon blossom come from a yellow bud.