We haven't had a lot of rain, but I have had many small stunted distorted dahlias, many took an extra 2-3 weeks to come up and they are tiny and unhealthy. Some never came up. So the last two days I have dug up the no-shows. Most were just stringy husks, others were full of gelatinous goo. Those with the goo often contained the tiny white worms I am showing in the picture. What are these awful things? Are they doing this? Or are they just scavengers eating already rotten tubers? I had many tubers looking like husks last year, but I thought it was rot from the rain, there has been almost none, and for two weeks I had them covered with row covers keeping them dry.