California false hellebore (Veratrum californicum)

California false hellebore

Also known as: Cebadilla, White false hellebore

California false hellebore (Veratrum californicum) is a highly poisonous plant native to the United States. California false hellebore grows from the southwestern region of the United States through the Rocky Mountains, and in Alaska. This plant can interfere with normal gestation during pregnancy and has caused birth defects in animals.

Scientific classification

Species

California false hellebore (Veratrum californicum)

Lilies, supplejacks and allies

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Toxic to Humans

Toxicity

Weeds

Weed or not

Perennial

Lifespan

Herb

Plant Type

Summer

Bloom Time

Spring

Harvest Time

91 cm to 1.8 m

Plant Height

60 cm

Spread

Green, White

Stem Color

Deciduous

Leaf type

5 - 32 ℃

Ideal Temperature

Spring, Summer

Growth Season

Rapid

Growth Rate

Images of California false hellebore

Attributes of California false hellebore

Growth Rate

California false hellebore's rapid growth rate manifests vividly during spring and summer. It rapidly develops large, ribbed leaves and towering stalks, an adaptation that maximizes photosynthesis during these seasons. Despite this speed, california false hellebore doesn't flower until it's several years old, demonstrating a trade-off between speed and reproductive maturity.

Distribution of California false hellebore

Distribution Map

California false hellebore is native to North America, specifically known from western regions. In its native habitat, california false hellebore is found in mountain meadows and other high altitude environments. While not widespread, california false hellebore has also been introduced to similar climates in other parts of the world, where it is cultivated in botanical gardens and specialized collections for its unique characteristics.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Swamps, creek bottoms, moist woodlands, meadows

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

California false hellebore is difficult to miss in shade gardens, even when the plant isn’t in bloom. Often used as a specimen plant or grown in clumps as a centerpiece, it has uniquely textured foliage from spring through fall. In the summer, the plant produces stalks covered in flowers that turn it into a garden showpiece.

Symbolism

Scandal

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Toxicity

California false hellebore is highly toxic to humans if ingested, particularly the roots, rhizomes, and shoots, causing symptoms like burning, headache, and even death. Cats and dogs are also at moderate risk if they ingest, experiencing gastrointestinal and cardiovascular issues. Immediate veterinary care is essential for pets showing any symptoms of poisoning from california false hellebore.

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Care Guide for California false hellebore

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Water: Native to moist mountain meadows, california false hellebore thrives in consistently moist conditions, requiring weekly watering to maintain health. It adapts well to outdoor environments with cooler temperatures and natural rainfall, mirroring its high-altitude origins and preference for steady hydration.

Fertilize: Fertilize california false hellebore with balanced fertilizers in spring and summer, switching to high phosphorus during flowering. Apply quarterly, following dilution instructions to prevent over-fertilization. Reduce frequency in fall and winter. Wear gloves for safety, as california false hellebore is toxic. Beginners should start with lower doses.

Pruning: California false hellebore features tall green stalks and is toxic. Prune dead or damaged stems in early to late spring to promote healthy growth and manage size. Use gloves to avoid skin contact due to toxicity. Regular pruning enhances plant robustness and structure.

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