This 8 in. heavy-duty spiral landscape nail is made of UV-resistant thickened plastic in one piece and will not crack when exposed to outdoor sunlight. The spiral pattern penetrates deep into the soil, gravel or sand layer, and the interlocking area is three times larger than that of straight nails, firmly locking the edge strips of weed control fabric, artificial turf, paving stones or large rolls of ground film. It can be inserted into the ground by hand pressing or light hammering without tools. The long nail body ensures deep anchoring, is resistant to wind lifting and trampling, and remains stable like an "underground screw" throughout the four seasons. The finished fabric edges are neat and do not curl up, bringing a professional-level refreshing look to the courtyard, walkways and flower beds. It is a worry-free all-round "invisible manager" for both DIY owners and landscape architects.