You have just purchased plastic garden pegs, a lightweight and discreet fastening piece for securing light ground covers, thermal blankets, greenhouse films, surface biomats, and other thin materials to the ground. Their great virtues are quick installation and the fact that they do not rust, but they have a clear limitation: they are not suitable for fastenings that receive strong vertical traction. In this guide, we explain where to use them and where not to.
Product Specifications
The plastic garden peg is a polypropylene piece with a 16 cm cylindrical body, a sharp tip, and a wide head 3-4 cm in diameter. The wide head acts as a stop against the material to be secured. It is inserted manually into soft garden soil and is almost invisible once settled beneath the material's covering.
| Specification | 16 cm peg |
|---|---|
| SKU | 654210 |
| Length | 16 cm (6.2 in) |
| Material | Polypropylene with UV stabilizer |
| Box | 1000 pegs |
| Application | Thermal blankets, films, light ground cover |
Step-by-step usage guide
The plastic garden peg is installed by hand, without tools. Speed is its great advantage: one person can place 200-300 pegs per hour.
Verify it's the right fastener
The plastic peg is for lightweight materials that do not receive significant vertical traction: thermal blankets for frost protection, greenhouse film, surface biomats on flat ground. For permanent garden weed control fabric, agricultural ground plastic, or edges exposed to wind, do not use pegs: switch to metal garden staples.
Spread the material
Unroll the blanket or film over the crop or ground. Lightly tension it by hand and temporarily position the edges with stones or soil to prevent it from moving while you place the pegs.
Position the peg
Hold the peg by the head with your hand. Place the tip perpendicular to the ground over the material. Push down with your palm. In soft garden soils (loose substrate, watered soil), it will penetrate completely in a single motion.
Push until the head is flush
The peg head should be flush with the material, pressing it against the ground. If the head remains visibly protruding, the material will not be properly secured, and the peg creates a tripping hazard. If it doesn't penetrate completely by hand alone, assist with a gentle tap from a rubber mallet on the head.
Distribute according to material type
For thermal blankets and films: 1 peg per m² indoors + every 50 cm along the edge. For surface biomats on gentle slopes: 2 pegs per m². In areas with drafts or slopes, increase density. A box of 1000 pegs covers approximately 800-1000 m² of typical ground cover.
The plastic peg is ideal for seasonal covers that are removed and re-applied: thermal blankets removed in spring, film covered only during flowering, surface biomats until germination. Being plastic, it does not rust and does not damage gardening tools if accidentally buried. When the cover has served its purpose, the pegs can be collected and reused.
Do not use plastic pegs instead of metal staples to fix weed control fabric or agricultural ground plastic. The plastic peg cannot withstand the vertical traction generated by wind on wide sheets: it pulls out of the ground and the fabric lifts. For these materials, switch to 4x20 cm metal garden staples, which do resist significant vertical traction.
Plastic peg or metal staple?
If you have doubts about which fastener to choose based on the material you are placing and the type of crop or garden, ask the virtual assistant. It will guide you so you don't fall short or overdo it.
Complementary products
The plastic peg covers the lightweight range of garden fasteners. For more demanding applications, consider the alternatives:
The metal garden staple is the counterpart to the plastic peg: for materials that receive significant vertical traction (weed control fabric, agricultural ground plastic on raised beds). Weed control fabric and agricultural ground plastic are materials that are secured with staples, not plastic pegs. Having both fasteners in stock allows for any type of garden installation.
Maintenance and care
The plastic peg is reusable if properly stored:
- Storage: In its box, in a dry and shaded place. Polypropylene with UV-stabilizer lasts for years, but prolonged sunlight degrades the material.
- Collection after removing cover: At the end of the thermal blanket or film season, collect all pegs. Run your hand over the ground to find any buried ones. Clean them of soil and return them to the box for reuse.
- Inspection before reuse: Discard broken, bent, or fractured pegs. A well-collected box lasts 3-5 seasons of use.
- Disposal: Polypropylene is recyclable. When the pegs have reached the end of their useful life, send them to a plastic recycling center instead of general waste.
Frequently asked questions
Why plastic and not metal?
For lightweight covers like thermal blankets, plastic has three advantages over metal: it does not rust (ideal for garden humidity and daily irrigation), it is lighter (less weight to transport large quantities), and it does not damage gardening tools if left in the ground (a metal peg can ruin a rototiller). The limit is strength: for heavier loads, metal is used.
Does it penetrate compacted soil?
The plastic peg is sized for soft soils typical of domestic gardens or greenhouses. In compacted, dry, or gravelly soils, manual penetration does not work. If the soil where you want to install is hard, water it 24 hours before to soften the surface layer, or use metal garden staples, which penetrate better with a mallet strike.
How many kilos of vertical pull can they withstand?
Nominal resistance per unit: approximately 8-12 kg (18-26 lb) of vertical pull in soft soil. This is sufficient to hold light covers against a moderate breeze but insufficient for strong winds on large rolls of sheeting. For reference: a metal garden staple holds 30-50 kg (66-110 lb) in the same soil.