Given the right temperature and moisture, seeds will germinate and grow. We humans normally will germinate and grow plants and trees of our own choice. The rest of plants will grow by themselves as self seeding or dispersed by birds, animals, wind and water.
This particular plant appeared behind one banana tree. It had grown to a considerable size with beautiful light flowers before I notice it. The seed must have been brought there by wind. I love the rich green colour of the leaves, and the soft purple flowers, so I have them spread around the backyard garden, as border.
bangchik and kakdah
Garden: Putrajaya presint 8