I have white Shasta daisies and they have developed a strange problem! The stems grow twisted! They do not grow up, they twist and turn and some even lay on the ground. The stems are not straight as daisies are suppose to be. Also, the daisy flowers of some are stunted. They have been in the ground about 5 years and have an East exposure. Can you help identify this problem and how to correct it before they come up, if possible?
Kent County Michigan
There are a couple of possibilities for your problem although it is easier to do a diagnostic when a sample is available to look at. One possibility is herbicide damage. Do you treat any nearby lawn or garden areas with any type of herbicide that could be taken up by the daisies? A second possibility is a disease known as Aster Yellows. Information that may help regarding the disease can be found at: https://hortnews.extension.iastate.edu/2006/9-13/asteryellows.html
It may be necessary to wait until the daisies come up and show signs of the damage to then either take a sample to your local County Extension office (call first to see if they do diagnostics) or send the sample to campus for diagnostics. Information on sending samples can be found at: https://pestid.msu.edu/