Edit: The weed lobby is alive and well in the comments! Just kidding. Appreciate the responses.
But my question still sort of stands. Take away the pejorative label “weed”—what allows these plants to perform better than the other ones?
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Late to the party here, but I think this wasn’t touched on.
Plants that are taken from their normal environments into a new one sometimes become invasive weeds, because they suddenly have no competition and no predators. With no restrictions, all the effort they put into merely keeping up, goes straight into new growth and next thing you know, they are frickin everywhere. They aren’t doing anything differently, they just aren’t having 90% of their growth immediately destroyed by other plants, animals, diseases, weather etc.
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