Abstract: A ground-planted flower bed includes multiple support plates connected end-to-end, and a splicing mechanism set between adjacent support plates. The support plates include adjacent first support plate and second support plate. The splicing mechanism includes an insert plate set on a front end of the first support plate, an insertion slot set on a rear end of the second support plate for receiving the insert plate, a slot set on the insert plate, a clamping portion corresponding to the slot set on the second support plate, the clamping portion being configurable into an unfolded state having a straight configuration, and a folded state having a bent configuration that protrudes outward from one side of the second support plate, and a limiting plate formed on the rear end of the second support plate, the limiting plate being offset to the same side of the second support plate.