Silk Piggyback Bushes Silk Piggyback Plants. Artificial silk piggyback bushes, artificial silk piggyback plants are not made from real silk. Artificial silks are made from synthetic fabrics, plastic coated iron wire and are not made of any real silk. Silk bushes and silk plants come un-shaped. Products: Due to each monitor screen / tablet difference / mobile phone, the item's colors might be slightly different from the picture shown.