Grand collomia (Collomia grandiflora)

Grand collomia

Also known as: Large-flower collomia

Grand collomia (Collomia grandiflora) is a member of the phlox family. Its genus name of “Collomia” comes from the Greek word for “glue.” It has that name because the seeds are super sticky. The specific epithet of “grandflora” means “large-flowered.”

Scientific classification

Species

Grand collomia (Collomia grandiflora)

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Annual

Lifespan

Herb

Plant Type

Summer

Bloom Time

10 cm to 91 cm

Plant Height

45 cm

Spread

Deciduous

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Grand collomia

Distribution of Grand collomia

Distribution Map

Grand collomia is native to North America, flourishing especially in the western part of the continent. Since human activity has facilitated its movement, grand collomia has been introduced to various parts of Europe and Southern America, where it continues to spread, finding favorable conditions in temperate regions.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Open, wooded slopes

Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Grand collomia

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Grand collomia thrives in evenly moist soil and requires moderate watering, approximately once weekly. It benefits from natural rain in temperate regions but may need supplemental irrigation during dry spells. Adequate hydration is crucial for prolific flowering during its growing season.

Fertilize: Fertilize grand collomia with balanced nutrients during growth, using high-nitrogen formulas pre-bloom. Apply quarterly to prevent root burn, adjusting for dormancy and active growth. Dilute correctly, watering soil before application, using one tablespoon per gallon for optimal results tailored to grand collomia's specific needs.

Pruning: Grand collomia flourishes with regular pruning, ideally from early to late spring. Remove dead stems and thin dense areas to boost air circulation and prevent disease. Make clean cuts above leaf nodes to encourage new growth, ensuring longer-lasting, healthier blooms.

Propagation: Grand collomia, native to the Western United States, requires well-draining soil and ample sunlight. Propagation is achieved by shallowly sowing seeds in moist soil, keeping it consistently moist until germination. Thinning seedlings is essential to prevent overcrowding and promote healthy growth.

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