Paphiopedilum Lady Isabel

The Classic Multifloral Masterpiece

Historic Pedigree. Iconic Beauty. A Century of Excellence.

Paphiopedilum Lady Isabel is one of the most iconic and historically significant primary hybrids in the orchid world. Registered in 1897 by Thomas Statter, this legendary cross has captivated collectors for over a century with its stately multifloral blooms and impeccable lineage. Combining the “King of Slipper Orchids” with another Bornean giant, it remains a benchmark for multifloral Paphiopedilum breeding.

Award-Winning Pedigree & History

• The Cross: Paphiopedilum rothschildianum × Paphiopedilum stonei
• Registrant: Thomas Statter, registered in 1897
• Type: Primary hybrid – a cross between two species from Borneo

The Parents:

• Paph. rothschildianum – The legendary “King of Slipper Orchids,” famed for its long, horizontally held petals and imposing multifloral spikes
• Paph. stonei – A majestic species from Borneo, known for its elegant, wide dorsal sepal and graceful flower form

This Selection:

These particular cross features the clone ‘Jungle Select’ of Paph. stonei and the clone ‘Hong’ of Paph. rothschildianum – a carefully chosen pairing from elite Taiwanese breeding lines, specifically from Ching Hua Orchids. With both parents being exceptional clones, the resulting seedlings have the potential for show-quality flowers.

A Note on Nomenclature

This hybrid has a fascinating naming history:

• Registered as: “Lady Isabel”
• Commonly Misspelled: “Lady Isobel” – this spelling has become so prevalent that it is frequently used today
• Official RHS Status: The RHS accepts “Lady Isabel,” though it acknowledges the alternative spelling

Flower & Plant Characteristics

• Appearance: Stately multifloral blooms featuring strongly striped, cream, brown, and green-yellow petals and sepals
• Dorsal Sepal: The stonei influence provides a creamy white, broad dorsal with elegant striping, distinguishing it from pure rothschildianum
• Pouch: Pinkish to light mauve with subtle darker venation
• Flower Size: Petals can reach up to 128 mm in length
• Spike Height: Tall inflorescences, with mature plants producing 3–5 flowers per spike on a stem up to 590 mm
• Foliage: Forms robust rosettes of longer, strap-shaped green leaves

Why Collectors Prize This Hybrid

• Over a century of proven excellence – one of the oldest Paphiopedilum hybrids still in cultivation
• Highly awarded grex – numerous clones have received AOS and AOC awards
• Distinctive color contrast – the creamy dorsal against the striped petals and pink pouch is unmatched
• Improved vigor – hybrid vigor often makes it easier to flower than either parent species
• Reliable bloomer – once mature, it flowers reliably year after year

Care Requirements

Multifloral Paphiopedilums require patience and consistent care.

Light

Provide bright, indirect light. These orchids tolerate more light than many other Paphiopedilums but avoid direct midday sun that can scorch leaves.

Temperature

Prefers intermediate to warm conditions:

• Ideal daytime range: 18–28°C (64–82°F)
• Protect from temperatures below 15°C (59°F)

Watering

Keep the substrate evenly moist but never waterlogged. Water thoroughly when the medium approaches dryness. Paphiopedilums do not have pseudobulbs to cope with drought, so consistent moisture is essential.

Humidity

Maintain 50–70% relative humidity with good air circulation.

Potting Medium

Use a well-draining, aerated Paphiopedilum mix (fine to medium bark with perlite). Repot every 1–2 years when medium breaks down.

Fertilizer

Feed with a diluted balanced orchid fertilizer (quarter to half strength) during the growing season. Reduce feeding in winter.

Growth & Blooming Timeline

These are slow-growing plants that reward patience:

• From Seed to Flower: Typically 7 or more years
• First Bloom: May produce just 2–4 flowers on the first spike; full potential is reached on mature plants
• Reliable Blooming: Once mature, this hybrid flowers regularly, often during spring and summer
• Bloom Longevity: Flowers are long-lasting

Perfect For

• Serious orchid collectors seeking a piece of horticultural history
• Intermediate to advanced growers with patience for slow-growing multiflorals
• Exhibition enthusiasts wanting show-quality, award-potential blooms
• Slipper orchid connoisseurs who appreciate classic, stately hybrids

A Note on Availability

Because this is a seedling population (not a mericlone), no two plants will be identical. Each seedling will express a range of characteristics inherited from the awarded parents. When purchasing, look for clones with proven award records or select reputable breeders with exceptional parent stock.

The specific cross of stonei ‘Jungle Select’ × rothschildianum ‘Hong’ is from elite Taiwanese breeding lines, offering exceptional genetic potential for top-quality blooms.