Q.Why Is My Sunflower New Sets Of Leaves Bulky And Deformed Like This?
I keep seeing small brown bugs a bit bigger than an ant on the stem, and red ants too. Also I see white molds or thick spider webs on the stem.

Certified GKH Gardening Expert
Pests such as spider mites, aphids, and caterpillars can deform the foliage. Also, improper watering or lack of nutrients can cause leaf curl. These articles should help:
https://www.gardeningknowhow.com/ornamental/flowers/sunflower/sunflower-problems.htm
https://ipm.ucanr.edu/PMG/GARDEN/FLOWERS/sunflower.html
https://ipm.ucanr.edu/PMG/PESTNOTES/pn7405.html
https://ipm.ucanr.edu/PMG/PESTNOTES/pn7404.html
https://ipm.ucanr.edu/PMG/GARDEN/FLOWERS/INVERT/leafbeet.html

