Yes, but with annuals, they get very angry when you chop off buds, and they come back with more flowers. Scientifically, has to do with hormonal changes and 'fullness'.
Haven't cut the previous monster yet--- and I don't have a photo of my full sun, but leggy yellow, that I named Vanilla Canary because it smells nice, most of the time. But it's turning into a bare stemmed vine. ick!
This one is leggy, too!
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