种草 describes a recommendation planting a real desire to try or buy something. The order matters: first a friend, review, or post supplies a tempting detail; then the listener says they have been 种草.
That makes the expression more useful than a generic “I like it.” It captures influence in motion. The related 拔草 varies by context—it can mean finally acting on the desire or getting rid of it—so spell out what happened when ambiguity matters.
