Why are my flowers closed?

They naturally close during cloudy weather or at night.

Does it need deadheading?

No, it is self cleaning and will continue to bloom without help.

Plant guide

Blue daze.

Evolvulus glomeratus

Pronounced eh-VOL-yoo-lus glo-mer-AY-tus

Also known as Brazilian Dwarf Morning-Glory

Blue daze is a charming, low growing plant that loves the sun. It produces lovely sky blue flowers that open in the morning and close by evening. You will find it makes a wonderful ground cover or container filler.

At a glance

Care level: Easy
Plant type: Perennial subshrub
Light: Full sun
Indoor light: Direct sun
Water: Every 3 to 7 days
Mature size: 12 inches tall
Growth rate: Fast
Hardiness: USDA 9 to 11
Bloom time: Late spring to early autumn

Care

Plant this beauty in a spot with plenty of sun to keep it blooming well. Check that the soil drains quickly, as soggy roots will cause the plant to struggle. Watch for yellowing leaves, which often signal that the soil is staying too wet.

Watering: Water when the top inch of soil feels dry to the touch.
Feeding: Apply a balanced liquid fertilizer once a month during the growing season.
Pruning: Trim back the stems occasionally to encourage a bushier shape and more blooms.
Repotting: Move to a slightly larger pot only if the roots are circling the bottom.
Soil: Well draining sandy soil
Soil pH: 6.0 to 7.5
Temperature: 10 to 35°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Perennial, typically 3 to 5 years.
Deer and rabbits: Moderate

Signs it needs repotting

Roots growing out of the drainage holes.
Water running straight through the pot without soaking in.

Safety

People: There is no significant toxicity reported for humans.
Children: The plant is not known to be a choking hazard or toxic to children.
Contact allergens: No specific skin irritants are known.
Airborne allergens: No specific airborne allergens are known.
Edibility: This plant is not considered edible and should not be consumed.

How to identify it

Small sky blue funnel flowers
Fuzzy silver green oval leaves
Low spreading mounding growth habit
Flowers close during cloudy weather

Height: 0.15 to 0.3m
Spread: 0.3 to 0.6m
Leaves: silver, green, evergreen
Flowers: blue, 1 to 2cm

Common problems

Root rot — Occurs when soil stays too wet for too long.

Growing it

Propagation: cuttings, seed
When to plant: spring, early summer
Overwintering: In cooler climates, bring containers indoors to a sunny window before the first frost. Keep the soil slightly drier during the winter months.
In containers: It performs exceptionally well in containers and hanging baskets, provided the pot has excellent drainage.

Stem cuttings

Take a 4 inch cutting from a healthy stem.
Remove the lower leaves.
Dip the end in rooting hormone.
Place in moist potting mix until roots develop.

Pair with other drought tolerant, sun loving plants to ensure they all thrive under the same watering schedule.

Grows well with

Lantana — They share similar heat and sun requirements.
Sweet Potato Vine — The chartreuse foliage provides a striking contrast to the blue flowers.

Similar species

Dwarf Morning Glory — It is a close relative with a similar growth habit.

Science

Family: Convolvulaceae
Genus: Evolvulus
Order: Solanales
Class: Magnoliopsida
Native range: Tropical regions of Brazil and Paraguay.
Conservation: This plant is not of conservation concern.

It grows as a low sprawling mat in open, sunny, and well drained tropical habitats.

Value to wildlife: nectar source
Pollinators: bees, butterflies
Uses: ground cover, container plant, hanging baskets

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 8/9
Temperature: 8/9
Moisture: 4/9
Nutrients: 4/9

Taxonomy resolved against GBIF.

Questions people ask

Why are my flowers closed?: They naturally close during cloudy weather or at night.
Does it need deadheading?: No, it is self cleaning and will continue to bloom without help.

Where the name comes from

The genus name Evolvulus refers to the non twining stems, while glomeratus describes the clustered flower arrangement.

Good to know

It is commonly known as Blue Daze.
The name Evolvulus comes from the Latin word for unrolling, referring to the way the stems grow.
It thrives in full sun and heat.
The flowers only last for a single day.

Is your blue daze looking unwell?

This page is a general guide. Pocket Botanist diagnoses problems from a photo of your actual plant, works out watering for your light and conditions, and reminds you when care is due.

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This guide was generated with AI and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.