Examine the tablet and use the CHISEL on it (Q); take the GARDEN KEY (R).
Examine the gate; place the GARDEN KEY in the slot (S).
Examine the fence to activate a HOP (T).
Play the HOP (U).
You receive the LACE.
Walk forward to the Garden.
Take the SHOVEL (V).
Walk forward to the River.
Examine the lily pads; take the POLLUTED LEAF (W).
Walk left to the Front Yard; examine under the porch to activate a HOP.