Although many gardeners attempt to rid their yards of all weeds, these aggressive plants possess valuable characteristics. The ability of weed plants to grow in adverse conditions often makes them the only plants that survive in some areas. Weed plants' roots guard against soil, water and wind erosion in locations that can't support other varieties. Like other types of plants, some weeds grow well from cuttings while others require a different method of propagation. Experiment with a variety of different weed cuttings to reproduce hardy, vigorous plants.
Water the selected weed plants the day before taking cuttings to ensure adequate amounts of moisture in the plants' cells. Apply enough water to saturate the soil around the plants' roots.
Cut off several long, healthy stems that display an even growth of leaves along their lengths. Make the cuttings 3 to 12 inches long, depending on the variety of weed plant. Make sure each cutting contains several healthy leaves along its length. Place the cut end into a jar of clean water immediately to provide moisture while continuing to collect cuttings.
Fill biodegradable pots with average potting soil. Fill the pots to a level slightly below the upper rims. Poke a hole into the center of the soil in each pot with a pencil or similar object. Create holes almost as deep as the pots.
Remove one cutting at a time from the jar of water. Dip the damp cutting into the jar of rooting hormone. Slide the powdered cutting into the prepared hole in the soil. Press the soil around the new cutting to hold it firmly in place. Repeat this process with all of the weed cuttings.
Water the small plants thoroughly, slowly applying the water until a few drops of water drain from the bottoms of the pots. Place the cuttings in a brightly lit area. Keep the soil slightly moist until new leaves form. Reduce watering to reflect the amount of water these plants receive in nature.