Dahlia only bloom only sinlge petals
Some of my dahlias are only blooming out a row of single petals rather than multiple for example my Bodacious is not blooming the multiple petals to make it Bodacious. Are they at the end of their life cycle? Some tubers I just got this year. I kept some in the ground from last year to see if they'd do the same thing and they did, so I pulled them out. What causes this?