There are a number of plants that 'throw' their seeds like that. I'm not familiar with south Florida plants, but we have other members from that area. Perhaps one of them will be able to ID it for you.
If you'd like to post a picture of the plant, I'd be willing to research it and try to ID it for you.
[url=https://www.helpfulgardener.com/forum/viewtopic.php?t=3724]How to Post Pictures & Photos on Forums[/url]
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