2 named cultivars
The Story
Plant Bio
Evolvulus glomeratus, blue daze, is a low spreading evergreen perennial from tropical South America, nine to eighteen inches high and spreading two to three feet. Small oval leaves covered in fine grey down clothe trailing stems that root where they touch, and true blue funnel-shaped flowers with a white eye open each morning through the season.
The blue is unusually pure for a bedding plant, and the flowers open with the sun and close by afternoon, so the display is a morning one. It is a morning glory relative that does not twine or climb, which makes it a safe choice where its relatives would be a nuisance. It roots wherever the stems touch soil.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
10 inches
Width
27 inches
Light
Full Sun
Zones
9, 10
Water
Low to moderate
Humidity
Moderate
Lifespan
Perennial
Native To
Tropical South America
Toxicity
Non-toxic
Planting
How to Grow
- Plant out in full sun after the last frost.
- Give it free-draining soil; it hates wet feet.
- Water moderately and let the surface dry between times.
- Avoid rich feeding, which reduces flowering.
- Trim lightly if growth becomes straggly.
- Take cuttings in late summer to overwinter it.
Pro Tip
The flowers close by early afternoon, so judge a planting in the morning — a bare-looking bed at four o'clock is behaving normally.
Keep It Thriving
Care Guide
Do
- Give it full sun all morning ☀️
- Use free-draining soil or compost 🌱
- Trim lightly to keep it compact ✂️
- Take cuttings before frost ✂️
Don't
- Overwater or plant in heavy ground ❌
- Feed it richly ❌
- Expect open flowers in the afternoon ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Plant Out | ||||||||||||
| Trim |
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
Blue Daze questions
What zones can Blue Daze grow in?
Blue Daze is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Blue Daze deer resistant?
Yes — Blue Daze is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Blue Daze bloom?
Blue Daze typically blooms in spring to frost through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Blue Daze need full sun?
Blue Daze does best in full sun (6+ hours).
Is Blue Daze drought tolerant?
Yes — once established (usually after the first full season), Blue Daze handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Evolvulus to compare
Keep exploring
Explore the genus
Hardy in your zone?
Grow Blue Daze 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.