Question: Thrips ruined our Gladiolus entirely. The Patterson onions that were growing nearby looked healthy. We harvested the onions and placed them for storage in the cool cellar. Now it seems, 100% of the bulbs are rotting from the top down. The Ebenezers seem unaffected.  What is the issue? Answer: Jonathan Foster, Community Education Assistant read more What caused Patterson onions to rot from the top down?