Hoya imperialis

Hoya imperialis is a spectacular warm-growing species treasured for its oversized, thick, glossy blooms. The flowers are richly coloured—deep rose or red with a contrasting cream-pink corona—and each one is impressively large, giving the plant a dramatic tropical presence. Because this species responds strongly to warmth, bright light, and regular feeding, many growers pair it with the tips in our Grow Hoyas Faster & Get More Flowers guide to maximise blooming. Its substantial roots and stems also make it a great candidate for the techniques explained in Understanding Hoya Roots.

This is a vigorous, upright vine in warm conditions and makes an outstanding feature plant for collectors who enjoy large, showy flowers.

Key Characteristics

• Name: Hoya imperialis
• Growth Habit: Strong, upright, fast-growing vine
• Leaf Features: Large, thick, leathery green leaves
• Flowers: Very large, waxy blooms in deep red or rose with a cream-pink corona
• Fragrance: Light to sweet scent depending on conditions
• Pot Size Supplied: 100 mm
• Growth Speed: Fast in warm weather
• Skill Level: Intermediate
• WA Status: Permitted for WA

Growing Conditions

• Light: Bright filtered light; can take gentle morning sun
• Water: Allow mix to dry slightly between waterings; see our How to Water Hoyas guide
• Temperature: Warm-growing species; prefers 20–32°C
• Humidity: Moderate to high humidity encourages the best flowering
• Potting Mix: Free-draining airy mix such as bark/perlite/coco coir blends
• Fertiliser: Light, regular feeding during active growth

Where This Hoya Works Best

• Excellent feature plant for collectors of showy blooms
• Ideal for warm greenhouses, patios, or bright indoor trellises
• Perfect for growers who enjoy large, dramatic flowers
• Works well trained on a strong trellis or climbing support

Need help with Hoya care?

Explore our Hoya care guides for Australian growers:

• Beginner: Your First Cool-Growing Hoya
• How to Water Hoyas
• Grow Hoyas Faster & Get More Flowers
• Understanding Hoya Roots
• Seasonal Hoya Care for Australian Growers