Rope hoya (Hoya carnosa, USDA hardiness zones 10-12), also known as the Hindu rope plant or wax plant, is an interesting indoor plant with thick, deep green, waxy foliage. Although rope hoya is often grown in hanging containers, it also likes to be planted in a tabletop pot, where the heavy vines are trained to grow around a trellis. The rope hoya is a sturdy plant that isn't difficult to propagate by taking stem tip cuttings from a healthy adult plant.
Preparing the Potting Medium
Fill a pot with a lightweight potting medium consisting of a mixture of half sand and half perlite, vermiculite or peat moss. Place the filled pot in a saucer of water and leave it until the potting medium wicks up enough water to be completely wet. Set the pot aside to drain overnight or until the potting medium is damp but not dripping.
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Taking a Rope Hoya Cutting
Cut a 2- to 3-inch tip cutting from the end of a vigorous rope hoya stem. The cutting should have at least two or three healthy leaves at the tip and at least one leaf on the stem below the tip.
Pinch the leaves from the bottom half of the tip cutting, leaving 1 to 2 inches of bare stem for planting. The leaves at the tip are left intact.
Planting a Rope Hoya Cutting
Dip the cut end of the rope hoya tip cutting in a powdered rooting hormone. Tap your finger on the stem to knock off excess powder.
Immediately press the bare stem of the rope hoya tip cutting in the potting medium, with the leafy tip extending just above the potting medium. Pat the potting medium lightly around the stem to secure it in the pot.
Place the pot in a warm, brightly lit spot out of direct sun where the temperature is maintained at about 75 degrees Fahrenheit. Check the potting medium daily and add a small amount of water if the soil feels slightly dry. Avoid overwatering as the soggy soil will rot the tip cutting. Keep the soil moist as rooting won't take place if the soil is to dry or too wet.
Care and Maintenance
Provide your plant with the proper care and maintenance to prolong its life. Continue to water as needed until new growth appears, which indicates that the hoya rope cutting has rooted. At that time, transplant the cutting into a pot filled with any general-purpose commercial potting mix.
Place the plant in bright light, but avoid direct light from a sunny window. Water the potting mix when it feels dry, then allow the soil to dry before watering again.