You introducing beautiful plants @ctrl-alt-nwo. Its growing very fast.
Oyster plant, with its small white flowers and colorful leaves, looks harmless enough. Attractive even. But oyster plant grows and speads rapidly. It has escaped civilization and invaded wild areas of Florida, where it develops dense mats and blocks native plants from taking root. And that's a problem.
Oyster plant is a shade lover, which is one reason why it is valuable in landscaping. It will grow where other cultivated plants won't. But that same characteristic is also part of the problem it poses. When it finds a home in coastal hammocks, it blocks out seedlings from native trees and plants. One of the common way it spreads is through yard waste; pieces of the plant will sprout under the right conditions. Seeds of the plant are probably wind-dispersed; established plants spread by sending out shoots.
Good info. here, buddy, except, the second picture is not the same plant. This is Rhoeo spathacea, which also has same common name as Acanthus mollis.