White flower on otherwise pink dahlia...
This year I bought a Vassio Meggos dahlia from Swan Island, and it is generally pink/purple colored. It is perfectly healthy, produced two normal flowers, but now there is another healthy looking flower, except in white, coming from another branch. Has this happened for anyone else?
I'm not entirely sure, but the way Steve Meggos breeds his dahlias may have something to do with it. There's apparently some chemical stimulus that can bring up new colors in dahlias from deep within their DNA and if the color "sticks" for four generations, it's considered a new breed. The parent breed of this one is the deep red Spartacus. But I've only heard of this happening for entire tubers, not individual branches.