The Collector's Guide to Hoya Varieties: 15 Species Worth Growing

Hoyas are the collector’s houseplant par excellence. With over 500 described species and new ones being identified regularly, a Hoya collection can expand indefinitely in almost any direction — toward the fragrant and floral, the unusual and architectural, the tiny and intricate, or the large and dramatic. Once you’ve kept one Hoya successfully, it’s very hard to stop at one.

This guide covers 15 hoya varieties worth growing — from the gateway species that most collectors start with to genuinely unusual plants that will surprise even experienced growers. For each one, we’ll cover appearance, care specifics, how it differs from the standard Carnosa, and what you can realistically expect from it in a home environment.

Care Principles Across All Hoyas

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Across these varieties, drainage is a consistent priority; a terracotta pot with drainage is a useful option for hoyas that need their mix to dry between waterings.

Before the varieties, some universal principles:

• Let them dry between waterings. Hoyas are semi-succulent epiphytes. Root rot from overwatering is the primary way Hoyas die.
• Bright indirect light drives flowering. A shaded Hoya will live but rarely bloom.
• Never remove peduncles — the small woody spurs from which flowers emerge rebloom year after year.
• Rootbound = happier blooming. Resist upsizing until truly necessary.
• Fast-draining mix. Orchid bark, perlite, and a light potting mix blend works for nearly all Hoyas.

15 Hoya Varieties Worth Growing

1. Hoya Carnosa (Hoya carnosa)

Hoya Carnosa is where almost every Hoya collection begins. Oval, waxy leaves, vigorous trailing and climbing growth, and clusters of star-shaped, porcelain-pink flowers with a honey fragrance. It’s nearly unkillable once established and forgiving of neglect in ways that most houseplants are not.

Bloom: Pink star-shaped umbels, strong honey fragrance, especially evening. Reliably blooms in good light once mature. Humidity: Adaptable — tolerates typical home humidity (40-50%) without issues. Difficulty: Beginner

2. Hoya Kerrii (Hoya kerrii)

Hoya Kerrii is famous for its heart-shaped leaves. The important clarification: single-leaf plants sold around Valentine’s Day in small pots are technically alive but will never grow into full plants — a cutting without a node cannot generate new growth. A full vining Hoya Kerrii is a genuinely beautiful plant with large, succulent, deep-green heart-shaped leaves on long vining stems.

Bloom: Small, star-shaped, pale yellow flowers in umbels. Blooms less readily than Carnosa. Humidity: Tolerates typical home humidity well. Waxy, thick leaves store water efficiently. Difficulty: Easy

3. Hoya Obovata (Hoya obovata)

Hoya Obovata has large, round, deep-green leaves that often feature attractive silver splashing — no two leaves look exactly alike. It’s a vigorous grower for a Hoya and one of the most reliable bloomers in the genus when given adequate light.

Bloom: Pink and white star clusters similar to Carnosa. Fragrant. Blooms relatively readily in bright conditions. Humidity: Tolerates 40-50% home humidity without problems. Difficulty: Easy

4. Hoya Linearis (Hoya linearis)

Hoya Linearis looks nothing like a “typical” Hoya. Instead of oval, waxy leaves, it has long, thread-like, slightly fuzzy leaves that cascade in soft curtains of linear foliage. It’s a statement plant in a hanging basket and one of the most architecturally unusual Hoyas in cultivation.

Bloom: Small clusters of white star flowers in late summer/fall. Lightly fragrant. Blooms less readily than Carnosa but reliably in good light. Humidity: Prefers slightly higher humidity than Carnosa (50-60%). The thread-like leaves lose moisture more readily than thick waxy ones. Difficulty: Intermediate

5. Hoya Pubicalyx (Hoya pubicalyx)

Hoya Pubicalyx is one of the faster-growing Hoyas and one of the more reliable bloomers. Its long, narrow leaves are often splashed with silver, and the flower clusters are dark — deep burgundy-maroon with a silver sheen — and intensely sweet-fragrant at night.

Bloom: Dark red-maroon star clusters, strong night fragrance. Can bloom multiple times per year once established. Faster to first bloom than Carnosa. Humidity: Adaptable. Tolerates typical home humidity well. Difficulty: Easy-Beginner

6. Hoya Bella (Hoya bella)

A cascading species with smaller leaves than Carnosa and a naturally pendulous growth habit — it arches and drops rather than climbing, making it one of the best Hoyas for hanging baskets. Flowers are similar in structure to Carnosa but smaller, with white petals and a pink-purple center corona.

Bloom: White star flowers with pink-purple center. Lightly fragrant. Blooms reliably when mature and well-lit. Humidity: Prefers 50%+ humidity. Slightly more moisture-sensitive than Carnosa. Difficulty: Easy-Intermediate

7. Hoya Australis (Hoya australis)

One of the faster-growing Hoyas available to collectors. Native to Australia, it produces large waxy leaves and fragrant white star flowers similar to Carnosa. It tends to reach blooming size faster than Carnosa, making it a rewarding choice for those who want the Hoya flower experience sooner.

Bloom: White star-shaped umbels, sweet fragrance. Often blooms faster than Carnosa from a young plant. Humidity: Adaptable. Handles typical home humidity without issues. Difficulty: Beginner-Easy

8. Hoya Curtisii (Hoya curtisii)

A miniature Hoya with tiny, round leaves — each one patterned with a silver geometric motif that makes them look individually hand-painted. Hoya Curtisii is compact enough to grow in a small pot or as a tabletop trailing plant, unlike the larger-growing Hoyas.

Bloom: Tiny star flowers in small umbels. Infrequent but charming bloomer. Humidity: Appreciates 50%+ humidity. The small leaf surface area makes it more sensitive to dry air than large-leafed species. Difficulty: Intermediate

9. Hoya Wayetii (Hoya wayetii)

Strap-like leaves with a distinctive deep red or purple margin that intensifies under stress (bright light, slight drought, or cool temperatures). The margin color is a sign of a healthy, thriving plant — not a problem. Vigorous and trail-prone, Wayetii looks excellent in hanging baskets.

Bloom: Small maroon-red star clusters. Moderately reliable bloomer with good light. Humidity: Tolerates typical home humidity. Adaptable. Difficulty: Easy

10. Hoya Retusa (Hoya retusa)

One of the most unusual Hoyas in existence — its leaves are flat, narrow, and grass-like rather than oval or round. Hoya Retusa looks more like a hanging grass than a traditional wax plant. It’s a genuinely odd plant in the best possible way, appealing strongly to collectors who want something nobody else has on their shelf.

Bloom: Small white star flowers with red center. Infrequent indoor bloomer but worth the wait. Humidity: Prefers 50%+. The unusual leaf structure is less drought-tolerant than thick waxy leaves. Difficulty: Intermediate

11. Hoya Kentiana (Hoya kentiana)

Long, strap-like leaves similar in form to Wayetii, but with a different overall character. Kentiana’s leaves are typically solid green but may flush red-maroon in the center under stress (strong light, slightly dry conditions) — an unusual and beautiful effect.

Bloom: Dark maroon star clusters, sweetly fragrant. Similar bloom profile to Wayetii. Humidity: Adaptable. Handles average home humidity well. Difficulty: Easy

12. Hoya Shepherdii (Hoya shepherdii)

Often confused with Hoya Linearis, Shepherdii also has long, narrow leaves — but they’re slightly broader and more substantial than Linearis’s thread-like foliage, and they’re smooth rather than fuzzy. A distinct species with its own character.

Bloom: Small white star clusters. Moderate bloomer with good light conditions. Humidity: Prefers 50%+ but tolerates slightly lower. Difficulty: Intermediate

13. Hoya Lacunosa (Hoya lacunosa)

Tiny ruffled leaves on fast-growing twining stems. Hoya Lacunosa has a distinctive fragrance at night — the flowers are small, cream or white, and tucked in small umbels, but the night fragrance is disproportionately strong for their size. One of the more accessible and fast-blooming compact Hoyas.

Bloom: Small cream/white flowers, strong night fragrance. One of the more reliable blooming compact Hoyas. Humidity: Appreciates 50%+ but adapts to average home conditions. Difficulty: Easy-Intermediate

14. Hoya Mathildae (Hoya mathildae)

A rarer collector piece with small, attractively patterned leaves and a compact trailing habit. Hoya Mathildae is not commonly found in garden centers and requires seeking out specialty Hoya nurseries or online retailers. Its rarity makes it a prized find for dedicated collectors.

Bloom: Small star flowers. Infrequent bloomer — requires patience and excellent conditions. Humidity: Prefers 55-65%. More humidity-sensitive than many common Hoyas. Difficulty: Intermediate-Advanced

15. Hoya Compacta / Rope Hoya (Hoya carnosa ‘Compacta’)

Hoya Compacta is one of the most unusual-looking houseplants in existence. Its leaves are tightly twisted and contorted into a dense, rope-like mass — the vine looks like it’s made of braided, waxy rope rather than normal foliage. It’s extremely slow-growing and somewhat difficult to water correctly (water can pool inside the twisted leaf masses and cause rot if not careful).

Bloom: Same pink-white umbels as regular Carnosa. Can bloom but is very slow to reach blooming maturity. Humidity: Tolerates typical home humidity but needs careful watering to avoid rot in the twisted leaf masses. Difficulty: Intermediate

Hoya Varieties Comparison Table

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