He and the other plant users in the team also had conscious plants or plants that were about to awaken their consciousness, so it's better not to have such extreme plants with them, as they'll just influence the other plants badly—especially since the plants that they have were still young ones.
If their plants were just like Mr. Acacia, or at least at an adult age so that they won't be easily influenced, then they could take their time training them and changing the views of those plants.
Unfortunately, they have very young plants with them, and those wild plants were really aggressive and had abilities that would be troublesome if they continued to grow, so they didn't hesitate to deal with them cleanly.
He didn't continue talking with Sun and Thorn any longer, as the two of them were back to normal and were talking to each other.
They were discussing how powerful the two plants were already and also talking about the other people in the team.
