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Heliotrope

Heliotropium

Also called Heliotropes, String Of Stars

Heliotrope
Photo: Unknown author, Public domain

Heliotropium is a genus of about 325 species of herbs and subshrubs, best known in gardens through garden heliotrope (H. arborescens), prized for its fragrant clusters of purple-blue flowers. It is grown mainly outdoors in warm, sunny spots with moderate water.

Family
Heliotropiaceae (Heliotropi family)
Light
Full sun
Water
Water regularly while establishing, then let the top of the soil dry out between waterings.
Soil
Well-drained, moderately fertile garden soil or loam-based potting mix.
Temperature
18–30 °C; protect below 5 °C.
How easy
Easy
Safety
Toxic: All parts contain pyrrolizidine alkaloids that are hepatotoxic (harmful to the liver) if eaten, and the plants are highly toxic to humans.

About

Heliotropium is a genus of flowering plants with around 325 species commonly known as heliotropes. They are highly toxic to dogs and cats, as well as to humans.

Safety

The plants are highly toxic to dogs and cats, as well as to humans.

Some species are weeds, and many are hepatotoxic if eaten due to abundant pyrrolizidine alkaloids. There have been cases of canine death due to over-ingestion of this toxic plant. Though it is not palatable and most animals will completely ignore it, there have been cases of horses, swine and cattle being poisoned due to contamination of hay.

Where it grows

Some danaine butterflies, such as male queen butterflies, visit these plants, being attracted to their pyrrolizidine alkaloids.

Uses

Heliotropes are popular garden plants, most notably H. arborescens (garden heliotrope). Garden heliotrope is grown in Southern Europe as an ingredient for perfume. Heliotrope is the main ingredient in perfumes such as Byredo Heliotropia, Molinard Heliotrope, Etro Heliotrope, Fragonard Héliotrope Gingembre and others.

Other Heliotropium plants

Clasping heliotrope · Garden heliotrope · Heliotropium arboreum · Salt heliotrope · Heliotropium ellipticum · European heliotrope

Text excerpted from the Wikipedia article Heliotropium by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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