The Story
Plant Bio
Hemerocallis dumortieri is a perennial herbaceous plant known for its clumping growth habit, narrow grass-like foliage, and trumpet-shaped yellow flowers that bloom in summer.
This species is notable for its resilience in poor, rocky soils and its ability to tolerate drought, making it an excellent choice for low-maintenance gardens.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial, 10+ years
Native To
Asia
Toxicity
Non-toxic
Bloom period
Mid-summer – Late summer
In flower about 2 months of the year
Planting
How to Grow
- Tuck seeds or divide clumps in early spring for best results
- Plant in well-drained soil with full to partial sun
- Water regularly during first growing season
- Fertilize with a balanced fertilizer in early spring
- Mulch around the base to retain moisture
- Remove spent flowers for continuous blooming
Pro Tip
Divide every 3-4 years to maintain vigor and prevent overcrowding.
Keep It Thriving
Care Guide
Do
- Water during dry spells 💧
- Remove dead or faded flowers 🌸
- Apply mulch to conserve moisture
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t disturb roots during peak blooming
- Skip excessive fertilizing to prevent floppy growth
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Daylily Dumortieri questions
What zones can Daylily Dumortieri grow in?
Daylily Dumortieri is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Daylily Dumortieri deer resistant?
Not reliably. Deer may browse Daylily Dumortieri, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Daylily Dumortieri bloom?
Daylily Dumortieri typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Daylily Dumortieri need full sun?
Daylily Dumortieri does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Hemerocallis to compare
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Hemerocallis flava 'Stella de Oro'
Ruby Spider Daylily
Hemerocallis fulva 'Ruby Spider'
Happy Returns Daylily
Hemerocallis lilioasphodelus 'Happy Returns'
Fragrant Daylily
Hemerocallis x hybrida 'Fragrant Reblooming Daylily Value Collection'
Keep exploring
Explore the genus
Grow Daylily Dumortieri 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.