Heliotrope phacelia (Phacelia crenulata)

Heliotrope phacelia

Also known as: Cleftleaf wildheliotrope, Notch-leaf scorpion-weed

The heliotrope phacelia is a flowering annual native to the southwestern United States. Commonly found in sandy soil and desert plains, the plant has an unpleasant odor and can cause a rash.

Scientific classification

Species

Heliotrope phacelia (Phacelia crenulata)

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30 cm to 61 cm

Plant Height

30 cm

Spread

2.5 cm

Flower Size

Purple

Flower Color

Semi-evergreen

Leaf type

20 - 35 ℃

Ideal Temperature

Images of Heliotrope phacelia

Distribution of Heliotrope phacelia

Distribution Map

Heliotrope phacelia is native to the arid and semi-arid regions of North America. Over time, it has spread broadly across similar habitats, favoring the continent's western parts where it thrives in the varied conditions of this expansive area. The geographical range, though primarily concentrated where it originated, also extends to encompass some of the neighboring temperate zones.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Plains, mesas, foothills, sandy to gravelly washes, slopes

Hemisphere Trend Curve

Northern

Sorthern

Toxicity

Heliotrope phacelia, containing geranylhydroquinone, induces dermal irritation and gastrointestinal distress in humans, cats, and dogs. Contact or ingestion causes symptoms ranging from mild rashes to severe nausea, vomiting, and diarrhea. Immediate medical or veterinary attention is critical upon exposure to any part of the plant.

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Care Guide for Heliotrope phacelia

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Heliotrope phacelia thrives in arid environments, preferring drier conditions. It is notably drought-tolerant, requiring weekly watering for optimal health. When grown outdoors, seasonal rainfall should be considered in its watering schedule, as it impacts the plant's hydration and overall well-being.

Fertilize: Heliotrope phacelia requires balanced fertilizers, like a 10-10-10 NPK blend, monthly in spring and bi-monthly in fall. Use one teaspoon per plant, dissolved in water. Adjust feeding for flowering, reduce in winter, and always water after fertilization. Annual soil tests help optimize nutrition.

Pruning: Heliotrope phacelia features vivid blue-purple flowers and thrives with early spring pruning. Trim dead stems to boost growth and encourage ongoing blooms. Avoid deep cuts to support regrowth, while pruning also promotes a pleasing shape and prevents legginess for a healthy, attractive plant.

Propagation: Heliotrope phacelia thrives with direct sowing in well-drained soil, requiring adequate spacing to prevent overcrowding. Keep the soil consistently moist until germination, aided by warmth. Once established, heliotrope phacelia needs minimal care, only requiring thinning if growth is too dense.

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Images of Heliotrope phacelia

Distribution of Heliotrope phacelia

Toxicity

Care Guide for Heliotrope phacelia

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