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Evolvulus glomeratus
Blue daze
Evolvulus glomeratus
Evolvulus glomeratus, commonly known as Blue Daze or Brazilian Dwarf Morning-glory, is a tender perennial, often grown as an annual in cooler climates. It is cherished for its stunning, true-blue, funnel-shaped flowers that bloom profusely from spring until the first frost. The flowers characteristically open in the morning and close in the afternoon or on cloudy days. This low-growing, spreading plant features fuzzy, oval, silver-green leaves that provide a soft texture to garden beds, containers, and hanging baskets. It is exceptionally heat and drought-tolerant once established, making it a reliable choice for sunny, hot locations.
CategoryDetails
Plant TypePerennial plant
Estimated Plant Lifespan4 years lifespan
Sun Requirements6+ hours direct sunlight (Full Sun)
Pollination

Method: animal

Notes: The open, nectar-rich flowers are attractive to a variety of pollinators, primarily bees and butterflies, which transfer pollen as they forage.

Watering Requirements

Method: Top water

Frequency: Water thoroughly when the top 1-2 inches of soil feel dry to the touch. It is drought-tolerant once established but performs best with consistent moisture during the growing season.

Notes: Excellent drainage is essential to prevent root rot. Avoid letting the plant sit in waterlogged soil. Reduce watering frequency during cooler, non-growing months.

Humidity Requirements

Level: Moderate

Maintenance: It is tolerant of a wide range of humidity levels and does not typically require any special maintenance like misting, especially when grown outdoors. Good air circulation is beneficial.

Care InstructionsThis plant is self-cleaning, meaning the spent flowers drop off on their own without the need for deadheading. If the plant becomes leggy, especially mid-season, you can prune it back by about one-third to encourage bushier, more compact growth and a new flush of flowers.
Temperature Range

Min: 2°C

Max: 35°C

Alternative NamesEvolvulus glomeratus euglomeratus, Evolvulus glomeratus genuinus
Lantana camara
common lantana
Lantana camara
Lantana shares similar full-sun, heat, and well-drained soil requirements. Its mounding growth habit and vibrant flower clusters in yellow, orange, or pink create a beautiful color and form contrast with the trailing, blue-flowered Blue Daze.
Pentas lanceolata
Egyptian Star-cluster
Pentas lanceolata
Pentas thrives in the same sunny, warm conditions and attracts pollinators like butterflies, which also visit Blue Daze. The upright, star-shaped flower clusters of Pentas provide a lovely textural and height contrast to the low, spreading habit of Evolvulus.
Angelonia angustifolia
summer snapdragon
Angelonia angustifolia
Angelonia is another heat-loving plant that enjoys full sun and moderate water. Its tall, spiky flower stalks in shades of purple, pink, or white contrast beautifully with the low, sprawling form and round flowers of Blue Daze.
Hydrangea macrophylla
mophead hydrangea
Hydrangea macrophylla

Hydrangeas require rich, consistently moist soil and prefer partial shade or morning sun, especially in hot climates. These conditions are opposite to the full sun, excellent drainage, and drought-tolerance that Blue Daze needs, leading to root rot for the Evolvulus or stress for the Hydrangea.

Impatiens walleriana
Busy Lizzie
Impatiens walleriana

Impatiens are classic shade plants that need consistently damp soil to thrive. Planting them with sun-loving, drought-tolerant Blue Daze would create an impossible situation where one plant is either scorched and dehydrated or the other is waterlogged and failing to thrive.

Spider Mites

These tiny arachnids thrive in hot, dry conditions. They suck sap from the leaves, causing fine, yellow stippling. In heavy infestations, you may see fine webbing on the plant, and leaves can turn yellow or bronze and drop off.

Fungus Gnats

Small, dark flies that are attracted to consistently moist soil. While the adult flies are mostly a nuisance, their larvae in the soil can feed on plant roots, causing wilting, poor growth, and yellowing leaves, especially in young plants.

Whiteflies

Tiny, moth-like insects that congregate on the undersides of leaves. They suck plant juices, causing leaves to yellow, weaken, and drop prematurely. They also excrete a sticky substance called honeydew, which can lead to sooty mold.

Steps:

    • Select a healthy, non-flowering stem from the parent plant.
    • Take a 4-6 inch cutting from the tip of the stem, making the cut just below a leaf node.
    • Carefully remove the leaves from the lower half of the cutting.
    • Optionally, dip the cut end into a rooting hormone powder to encourage faster root development.
    • Plant the cutting into a small pot filled with a moist, well-draining potting mix (like a mix of perlite and peat moss).
    • Cover the pot with a plastic bag or place it in a propagator to maintain high humidity.
    • Place the cutting in a warm location with bright, indirect light.
    • Keep the soil consistently moist but not waterlogged.
    • Roots should develop in 3-4 weeks. You can check by gently tugging on the cutting; resistance indicates root growth.

Neem Oil

An effective, natural insecticide and miticide for controlling pests like spider mites and whiteflies. It works by disrupting their life cycle and deterring feeding.

Insecticidal Soap

A contact insecticide that is effective against soft-bodied insects like aphids, whiteflies, and spider mites without leaving a harmful residue. It must be sprayed directly on the pests to be effective.

Balanced Slow-Release Granular Fertilizer

Provides a steady supply of nutrients throughout the growing season to support continuous blooming without promoting excessive foliage growth at the expense of flowers.

Bacillus thuringiensis israelensis (BTI) Dunks

A natural, soil-dwelling bacterium that specifically targets and kills fungus gnat larvae in the soil, preventing infestations without harming the plant or beneficial insects.