< h2>Plant Caps to Protect Young Plants</h2>With these plant caps, your young plants will safely survive the changeable spring. The microclimate created in the PVC growing caps promotes the growth of vegetables and lettuces. The plant caps are also ideal for protecting young plants from strong sunlight, hail, frost, and hungry predators. Using them is incredibly easy: Simply place the lettuce caps over the seedlings and weigh down the wide edges with soil. <br>