To properly grow a hoya plant, place it in a warm, humid, indoor environment with bright, indirect light in a sterilized plastic pot filled with slightly acidic soil. Alternatively, plant it outside in the shade to prevent the leaves from burning in a climate warmer than 50 degrees Fahrenheit at night.Continue Reading
Plant hoya plants indoors, in a sheltered area, where the temperatures do not dip below 40 degrees Fahrenheit. Pot the plant in a well-draining soil mix made primarily with peat moss and perlite. Water the plant regularly in the spring and fall, and water sparingly in the winter to avoid root rot.
Re-pot the plant when roots are visible in the drainage hole, or when the pot does not give when pressed on the sides. For best results, re-pot the plant in the early spring to midsummer in a pot no more than one to two inches larger than the previous pot. Once the hoya plant buds, do not move it to another location or rotate it away from sunlight.
To successfully grow a hoya outdoors, plant it outdoors in a shady, salt-free environment 18 to 24 inches from any other hoya plant. Plant the hoya in clay, sand and loam soil, or use a pot to protect it from nematodes. Hoya plants perform best in U.S. Department of Agriculture plant hardiness zones 10 through 12.Learn more about Outdoor Plants & Flowers