North America Non-native Plant

Crinum Asiaticum Var. Procerum

Botanical name: Crinum asiaticum var. procerum

USDA symbol: CRASP2

Life cycle: perennial

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Pacific Basin excluding Hawaii  

Crinum asiaticum var. procerum: A Tropical Bulb for Pacific Gardens If you’re gardening in the tropical Pacific and looking for a striking flowering bulb, you might have come across Crinum asiaticum var. procerum. This lesser-known variety of the Asian spider lily brings dramatic blooms to warm-climate gardens, though it comes ...

Crinum asiaticum var. procerum: A Tropical Bulb for Pacific Gardens

If you’re gardening in the tropical Pacific and looking for a striking flowering bulb, you might have come across Crinum asiaticum var. procerum. This lesser-known variety of the Asian spider lily brings dramatic blooms to warm-climate gardens, though it comes with some considerations worth knowing about.

What Is Crinum asiaticum var. procerum?

Crinum asiaticum var. procerum is a perennial flowering bulb that belongs to the amaryllis family. As a forb, it’s an herbaceous plant that lacks woody stems but produces impressive displays year after year. This variety is characterized by its large, fragrant white flowers that bloom in clusters and its distinctive strap-shaped leaves arranged in an attractive rosette pattern.

Where Does It Grow?

This plant is not native to the Pacific region but has established itself in Guam and Palau, where it reproduces naturally without human intervention. Originally from tropical Asia, it has adapted well to Pacific island conditions.

Garden Appeal and Design Role

When it comes to visual impact, this crinum variety doesn’t disappoint. Here’s what makes it appealing:

  • Large, showy white flowers that appear in dramatic clusters
  • Sweet fragrance that’s most noticeable in the evening
  • Bold, architectural foliage that adds tropical flair
  • Long blooming period in warm climates

In landscape design, this plant works well as a focal point in tropical gardens, borders, or as part of a mixed bulb planting. Its substantial size makes it suitable for larger garden spaces rather than small container gardens.

Growing Conditions and Care

If you’re considering growing Crinum asiaticum var. procerum, here are the key requirements:

Climate: This plant thrives in USDA hardiness zones 9-11, making it suitable only for tropical and subtropical regions. It needs consistent warmth and humidity to perform well.

Light: Provide partial shade to full sun. In very hot climates, some afternoon shade can prevent stress.

Soil: Well-draining soil is essential to prevent bulb rot. The plant tolerates various soil types as long as drainage is adequate.

Water: Regular watering during the growing season, but allow soil to dry slightly between waterings. Reduce watering during dormant periods.

Planting and Maintenance Tips

  • Plant bulbs with the neck slightly above soil level
  • Space plants 3-4 feet apart to accommodate their mature size
  • Apply a balanced fertilizer during the growing season
  • Remove spent flower stalks to encourage continued blooming
  • Divide clumps every 3-4 years if they become overcrowded

Wildlife and Pollinator Benefits

The fragrant evening blooms of this crinum variety attract night-flying pollinators, particularly moths. This can add an interesting dynamic to your garden’s ecosystem, especially if you enjoy observing nighttime garden visitors.

Should You Plant It?

While Crinum asiaticum var. procerum can be a beautiful addition to tropical Pacific gardens, it’s worth considering that it’s not native to the region. If you’re focused on supporting local ecosystems, you might want to explore native alternatives first.

For gardeners in Guam, Palau, and similar tropical Pacific locations, native bulbs and flowering plants that provide similar aesthetic appeal might include indigenous species that better support local wildlife and require less intervention to thrive.

If you do choose to grow this crinum variety, be a responsible gardener by monitoring its spread and ensuring it doesn’t escape cultivation into natural areas. Regular maintenance and containment within your designed garden space will help prevent any potential issues.

The Bottom Line

Crinum asiaticum var. procerum offers tropical gardeners a chance to grow an impressive flowering bulb with dramatic blooms and architectural foliage. While it’s not native to the Pacific region, it has proven adaptable to local conditions. Whether you choose to grow it or opt for native alternatives, the key is making informed decisions that align with your gardening goals and environmental values.

Crinum Asiaticum Var. Procerum

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Crinum L. - swamplily

Species

Crinum asiaticum L. - poisonbulb

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA