Mix 2 parts sand and 1 part peat moss uniformly to make the rooting medium. Moisten the blend and add it to a pot with drainage holes.
Cut a 4- to 6-inch stem off the base of an evergreen clematis in May to June.
Dip the cut tip of the stem in rooting hormone. If the formula is in powder form, wet the wood first so the hormone sticks to it.
Plant the hormone-treated end of the stem in the sand-peat mix. Water the rooting medium and mist the cutting with a spray bottle.
Place the pot in a clear plastic bag to maintain the environment warm and humid for the cutting. Insert stakes taller than the stem in the soil to hold the bag up if it collapses.
Move the planter to a warm area with indirect bright sunlight. Continue to irrigate the soil and spray the cutting with water regularly to prevent them from drying out. Rooting occurs in four to five weeks.