Similar Species
Many plants in the parsley family look similar to hogweeds, with white flowers in compound umbels, as do some in the daisy family (Asteraceae). Plants confused with Heracleum include the hemlocks (Conium) and water hemlocks (Cicuta) which are highly poisonous.
Water parsnip (Sium suave), which is not poisonous is also similar in appearance.
Yarrow (Achillea millefolium) in the daisy family also has many small white flowers in its inflorescence, but the leaves are pinnately separated into small narrow segments.
Read more about this topic: Heracleum (plant)
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