River Spider Lily
Hymenocallis riparia
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
8, 9
Water
High
Humidity
High
Lifespan
Perennial
Native To
Mexico, Central America
Toxicity
All parts are toxic if ingested
The Story
Plant Bio
Hymenocallis riparia is a perennial bulbous plant known for its slender, arching foliage and distinctive, trumpet-shaped white flowers with a central corona, typically blooming in summer. This species is notable for its ability to thrive in moist, riparian habitats and its elegant, fragrant flowers that attract pollinators such as bees and butterflies.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck bulbs into well-draining soil in spring, 6 weeks before last frost.
- Mist cuttings with water to encourage root growth in early stages.
- Water regularly but do not overwater, especially during dormancy.
- Fertilize with a balanced, water-soluble fertilizer every 4–6 weeks during active growth.
- Prune dead or damaged leaves in late fall to promote healthy growth.
- Divide clumps every 3–4 years in early spring for propagation.
Pro Tip
Plant in a sheltered location with partial shade for best flowering performance.
Keep It Thriving
Care Guide
Do
- Water consistently during active growth 🌱
- Apply a balanced fertilizer monthly during blooming
- Mulch to retain moisture and regulate soil temperature
Don't
- Avoid overwatering during dormancy ❌
- Don’t disturb bulbs during flowering period
- Refrain from pruning in late fall to protect winter interests
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
River Spider Lily questions
What zones can River Spider Lily grow in?
River Spider Lily is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is River Spider Lily deer resistant?
Yes — River Spider Lily is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does River Spider Lily bloom?
River Spider Lily typically blooms in summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does River Spider Lily need full sun?
River Spider Lily does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Hymenocallis to compare
Spring Spiderlily
Hymenocallis liriosme
Eulalie's Spider Lily
Hymenocallis eulae
Caribbean Spider Lily Tropical Giant
Hymenocallis caribaea 'Tropical Giant'
Caribbean Spider Lily
Hymenocallis caribaea 'Superstar'
Fragrant Spider Lily
Hymenocallis eucharidifolia
Traub's Spider Lily
Hymenocallis traubii
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Grow River Spider Lily with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
