Daylily Joan Senior
Hemerocallis x hybrida 'Joan Senior'
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Asia
Toxicity
Highly toxic to cats. Non-toxic to dogs and humans.
The Story
Plant Bio
Hemerocallis x hybrida 'Joan Senior' is a perennial with arching clumps of strap-like, green foliage and large, trumpet-shaped, near-white flowers with a green-yellow throat. This cultivar is renowned for its vigorous growth, prolific flowering, and its striking, ruffled petal edges that add a decorative touch to garden borders.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck well-draining soil around roots for stability.
- Mist cuttings lightly weekly to promote rooting.
- Plant in full sun for best flowering.
- Water regularly during dry spells, especially in first year.
- Mulch around base to retain moisture and suppress weeds.
- Divide every 3–4 years to maintain vigor.
Pro Tip
Ensure well-draining soil and full sun for optimal blooms.
Keep It Thriving
Care Guide
Do
- Water deeply during dry periods 🌱
- Divide every 3–4 years to rejuvenate
- Remove spent flowers to encourage reblooming
- Mulch to conserve moisture and control weeds
Don't
- Avoid overwatering, which can cause root rot ❌
- Don’t plant in heavy clay soil without amendments
- Refrain from cutting back in late fall
- Don’t ignore pest signs
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Spring Cleanup |
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
Daylily Joan Senior questions
What zones can Daylily Joan Senior grow in?
Daylily Joan Senior 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 Joan Senior deer resistant?
Not reliably. Deer may browse Daylily Joan Senior, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Daylily Joan Senior bloom?
Daylily Joan Senior typically blooms in early summer through mid-summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Daylily Joan Senior need full sun?
Daylily Joan Senior does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Daylily Joan Senior drought tolerant?
Yes — once established (usually after the first full season), Daylily Joan Senior handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Hemerocallis to compare
Daylily Mix
Hemerocallis x hybrida 'Mix'
Daylily
Hemerocallis x hybrida 'Daylily Design'
Stella de Oro Daylily
Hemerocallis flava 'Stella de Oro'
Ruby Spider Daylily
Hemerocallis fulva 'Ruby Spider'
Happy Returns Daylily
Hemerocallis lilioasphodelus 'Happy Returns'
Daylily
Hemerocallis x hybrida 'Fragrant Reblooming Daylily Value Collection'
Keep exploring
Explore the genus
Collections featuring this plant
Grow Daylily Joan Senior 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.
