Ursulaea macvaughii 
 
Common Names Macvaugh’s Ursulaea, Mexican Giant Bromeliad
 
Zones 9B–11
 
A spectacular terrestrial bromeliad native to Mexico, Ursulaea macvaughii forms a massive, arching rosette with stiff, spiny leaves that range from glossy green above to silvery beneath. Its inflorescence is showy and helicoid, resembling large Billbergia hybrids, with pink bracts and snow-white ovaries. This species is ideal for spacious landscape settings, conservatories, or collectors seeking architectural impact.
 
Key Features
Growth Habit: Giant rosette; solitary; terrestrial
Size: Up to 5–10 ft (1.5–3 m) tall and wide in mature specimens
Leaves: Narrow, stiff, spiny; glossy green above, silvery below; arching form
Inflorescence: Large, helicoid; pink bracts with white ovaries; summer bloom
Fruit: Inconspicuous
Ecology: Non-tank-forming; not suitable for vivarium use
 
Growing Conditions
Light: Full sun to partial shade; color and form best in bright light
Watering: Moderate; allow soil to dry slightly between waterings
Soil: Well-draining mix with sand and bark; pH 6.0–7.0
Temperature: 65–90°F (18–32°C); protect from frost
Humidity: Moderate (40–70%)
Propagation: By offsets or seed; slow to moderate growth
Tolerance: Heat and drought tolerant once established; sensitive to frost
 
Landscape Use Best suited for bold focal points in xeric or tropical gardens, large containers, and architectural plantings. Pairs well with Aechmea blanchetiana, Puya chilensis, and Agave ovatifolia.