Also known as wax plant, hoya is a semi-woody vine with large, waxy, egg-shaped leaves along the stem. Hoya is a striking, long-lived plant that may even surprise you with sweet-smelling, star-shaped blooms. If you’re interested in wax plant propagation, the most dependable technique is propagation via stem cuttings. Hoya propagation through seed is chancy and the resulting plant likely won’t be true to the parent plant – if the seed germinates at all. Read on for helpful tips on propagating hoyas.
How to Propagate Hoya Plants
Propagating hoyas with stem cuttings is easy. Hoya propagation is best is spring or summer when the plant is actively growing.
Fill a pot with a well-drained potting mix, such as one containing perlite, vermiculite or clean sand to improve drainage. Water well, then set the pot aside to drain until the potting mix is evenly moist but not saturated.
Cut a healthy stem with a least two or three leaves. The stem should be around 4 to 5 inches long (10-15 cm.). Remove leaves from the lower stem. Once the cutting is planted, the leaves shouldn’t touch the soil.
Dip the bottom of the stem in liquid or powdered rooting hormone. (Rooting hormone isn’t an absolute requirement, but it may increase the chance of successful rooting.) Water regular to keep the soil evenly moist. Be careful not to overwater because soggy soil may rot the stem.
Place the pot in indirect sunlight. Avoid direct sunlight, which may bake the young plant. Morning sunlight works well.
Wax Plant Propagation in Water
You can also start a hoya plant in a glass of water. Simply take the cutting as directed above and place it in a jar of water, with the leaves above the surface of the water. Replace the water with fresh water whenever it becomes murky.
Once the cutting roots, plant it in a pot filled with well-drained potting mix or orchid mix.