They look like life forms from another planet. But they're very much terrestrial. Cedar-apple rust is a fungus that is very common throughout North America. Remember that row of evergreen screen trees we planted along our fence line? That was in the fall of 2018, when we had a little help installing a row of nine mature eastern red cedar 'Taylor' trees. This past spring, I discovered massive galls attached to the twigs of many of the trees.
Every food plant you see pictured here in this post was grown from seed. Unfortunately, for every one of those, there's another plant that was supposed to have grown from seed but did not.
We're not at a loss for daylilies, AKA 'ditch lilies,' here at the Cat in the Flock farm. They're overgrowing a sidewalk near the house in one area and have obviously spilled over a circle in what is now the orchard, where they'd been planted with hostas. They're also popping up seemingly of their own accord in a back corner.