Hoya parasitica 'Black Margin Splash'
Purchased cutting from Jackie February 4, 2026
Hoya parasitica ‘Black Margin’ is a trailing houseplant featuring thick, glossy green, oval leaves with pointed tips and a black margin, hence the name. It produces waxy, ball clusters of whitish yellow flowers with reddish purple centers.
This hoya works for a hanging basket indoor or out. It is also great trained up a trellis or support pole. This evergreen tropical vine actively grows in the warm temperatures of late Spring to Fall. Hoya parasitica ‘Black Margin’ prefers a warm, humid environment with bright indirect light. Fertilize, mist and water regularly, reducing water in winter. Allow the soil to dry out between watering. Keep your Hoya above 55°F, or its growth might be stunted.
This hoya works for a hanging basket indoor or out. It is also great trained up a trellis or support pole. This evergreen tropical vine actively grows in the warm temperatures of late Spring to Fall. Hoya parasitica ‘Black Margin’ prefers a warm, humid environment with bright indirect light. Fertilize, mist and water regularly, reducing water in winter. Allow the soil to dry out between watering. Keep your Hoya above 55°F, or its growth might be stunted.
- Watering - Hoyas like to be watered when the top 1-2 inches of soil are dry to the touch. If your Hoya Parasitica Black Margin is thirsty, its leaves will wrinkle, and if it’s overwatered, the leaves will turn yellow, droop, or even become mushy. Water more often in bright light, and less in lower light. These plants are pretty tolerant of being underwatered, but too much water can lead to root rot—so it's best to let the soil dry out between waterings.
- Light - Hoyas prefer bright, indirect light, so an east- or west-facing window is perfect. If you want to place it in a south or north-facing window, just use a sheer curtain to filter the light to prevent scorching. Too much sun can cause the leaves to scorch or bleach, while too little sun can slow down growth and reduce blooms. Remember to rotate your Hoya Parasitica Black Margin every few weeks to ensure it grows evenly and doesn’t become lopsided.
- Fertilizing - Feed your Hoya once a month (every 4-6 weeks) in spring and summer only with a diluted, balanced fertilizer.
- Repotting - Hoyas like to be a little root-bound, so repot only every 2-3 years, using well-draining soil to keep the roots healthy.
- Humidity - They thrive in moderate humidity, so your home’s normal humidity should be fine. If the air in your home is below 40%, move your Hoya to a more humid room, like a bathroom with good light.
- Pruning & Propagation - Trim back long stems above a leaf node to encourage bushier growth. Avoid cutting off the stems where blooms form. To propagate, take a stem cutting and root it in water or soil. Pruning and propagating help your Hoya focus its energy on new growth and flowers.