The envelopes are made of handmade seed embedded paper. It is 100% ecofriendly and recyclable paper. Available in 10 different colours, 8 different seeds Method for using Grow Me Plantable Book Marks and Thank You Cards: Fill your pot 2/3 full with good potting soil. The paper can be planted indoors or outside, so you get to choose according to the temperature and conditions at the time of planting (we don't recommend planting outside if it's desert-hot!). Take your plantable paper and cover the soil in the prepared pot with the paper. Spread a 1/8 to 1/4 inch layer of soil over the plantable paper pieces and tamp down gently. After planting the paper in your pot, give it a good soak. You want the paper and the soil to be nicely damp. Keep the paper moist at all times, the water is necessary for germination. Once sprouts appear, continue to keep the paper moist but be careful not to overwater. Once sturdy plants appear, water as needed.