Pothos (Epipremnum aureum) grow houseplants everywhere but also grow as outdoor vines or ground covers in U.S. Department of Agriculture plant hardiness zones 10 through 11. Houseplant pothos need to be transplanted or repotted in spring when they are using more water than usual, growing slowly and their roots can be seen at the bottom of the container. Outdoor pothos can be transplanted to a new spot from late winter to early spring
Wash the new pot with hot, soapy water and rinse it if it has been used for another plant. Mix 1 teaspoon of bleach into 1 gallon of water and pour it over the container to sterilize it. Rinse the bleach solution off of the container. Use a container with drain holes in the bottom that is one size larger than the old one or no more than 2 inches wider.
Moisten a peat-based potting mix that contains perlite and course builder’s sand with water. Pour 1 to 2 inches of the moist potting mix into the bottom of the new container. Do not use potting mix that contains soil.
Squeeze the pothos' current container, if possible, to loosen the soil and roots. Loosen the soil and roots in clay or ceramic containers by digging your fingers down into the soil around the edges. Tip the pot sideways and gently grasp the pothos at the base of the stems. Pull the plant out of the old container. Loosen the roots carefully by hand.
Place the pothos plant in the new container. Fill in around the roots with moistened potting mix. Fill the container to within 1 inch of the top. Water the newly planted pothos generously until water drains from the bottom.
Water the pothos generously one day before transplanting. Remove the stems from support structures. Use sharp scissors or pruners to trim off lengths of stems that cannot be easily removed from their support. Trim all of the stems back to a length of 6 to 12 inches, if you wish, to make the plant easier to move.
Dig a hole in the new planting hole at least twice the width of the pothos root structure. Dig it just deep enough to plant the pothos at the same depth it was growing before transplanting. Space the plant 2 to 3 feet away from other pothos, plants or structures. Choose a shady spot away from shrubs and trees.
Push a shovel straight down into the soil 6 inches away from the pothos. Repeat this all the way around the plant, forming a circle around the plant. Hold the stems up or move them aside to prevent injury. Push the shovel into the soil again and pull the shovel handle back to lift the pothos up out of the soil with the tip of the shovel.
Pick the pothos up at the base of the plant. Support the bottom of the root ball with one hand and gently hold the base of the stems with the other. Place it in the new planting hole. Fill in around the roots with the same soil that was removed from the hole. Water the plant generously to settle the soil around the roots. Spread a 1- to 2-inch layer of organic mulch around the pothos.