I\'m a first time grower of sunflowers. What should I do in the fall? Will the plants come back next year?
Certified GKH Gardening Expert
You should definitely harvest the flowers right after they die. They will usually be eaten by animals and won't have a chance to re-grow. Collect these and replant next year.
Here is an article for more information: https://www.gardeningknowhow.com/ornamental/flowers/mexican-sunflower/planting-mexican-sunflowers.htm