I had a sunflower grow wild in my garden this year. I have watched several videos on how to grow them on You Tube, but I am confused as to when to cut the flowers off the stems and what to do with them afterwards.
The flower is currently past to pollination stage and is pointing at the ground. The buds are starting to fall off and the seeds are starting to show when they do.
I ask this because aphids have discovered the plant and I want to cut it down as soon as possible.
Many thanks, -T