Hoya Imperialis Red

Hoya Imperialis Red features very large, velvety deep red to maroon star-shaped flowers and produces impressively sized blooms. It is a vining climber that benefits from growing up a trellis or other support, and its leaves are thick, glossy, and fairly large with a slightly succulent texture. Native to tropical Southeast Asia, this species thrives in warm, humid environments and does best when its natural conditions are replicated indoors.

Care Tips:

• Light

  • Bright, indirect light is best.

  • Avoid harsh direct sun, which might damage leaves.

• Water

  • Let the top couple of centimeters of soil dry out before watering again.

  • In lower light or cooler temps, reduce watering frequency.

• Humidity

  • Prefers fairly high humidity (about 60% or more).

  • If your air is dry, consider a humidifier, pebble tray, or grouping with other plants.

• Soil

  • Use a chunky, well-draining mix. Good components: orchid bark, perlite, maybe coco coir or a light peat-free mix.

  • Avoid soil that holds too much moisture — this plant hates being waterlogged.

• Temperature

  • Ideal range: ~18–26 °C (65–80 °F).

  • Avoid cold drafts; don’t let it dip too low.

• Support / Training

  • Because it’s a climber, give it a trellis, support, or allow it to trail.

  • The stems can be a bit delicate, especially new growth — careful when handling.

• Flowering

  • Peduncles (flower stalks) should be left, not cut off — they can rebloom.

  • It may take time/maturity to produce flowers reliably.

• Propagation

  • Cuttings: choose ones with several nodes. Some root in water, but many find better success rooting in coco coir / peat / coir mix.

  • It’s slower to bloom from cuttings, so if flowering is your goal, be patient.

• Fertilizer

  • During its active growing season (spring/summer), a balanced houseplant fertilizer diluted to about half strength once a month works well.

  • Don’t overfeed — hoyas generally don’t need heavy fertilization.

• Pests / Problems

  • Watch for overwatering — root rot is a risk if soil is too dense or stays soggy.

  • Some growers report brown/red spots from sun stress or inconsistent watering.