Geranium robertianum - Herb-Robert geranium

Family Geraniaceae



This species is not common in nursery fields, yet.  It is becoming more common along roadsides and in landscapes.  So for thoroughness and comparison to other weeds in this family, I will provide several images on a single page.

Herb-Robert geranium prefers shady, moist areas.  It grows in a small clump about 12 inches high and wide.

Geranium robertianum - Herb-Robert geranium

Foliage and stems are very pubescent.   Foliage is deeply dissected, though the leaves are not typical of other geraniums (dovefoot and Carolina geranium) in this family.

Geranium robertianum - Herb-Robert geranium

Both stems and foliage have a strong and nauseating smell (in my opinion).  The smell is not disgusting like rotten eggs, but it is more of a strong chemical smell.  It's difficult to describe the scent, but I despise it and try to avoid it.

Geranium robertianum - Herb-Robert geranium

Flowers usually occur in pairs.

Geranium robertianum - Herb-Robert geranium

Flower sepals are very pubescent with long hairs, similar to leaves and stems.

Geranium robertianum - Herb-Robert geranium

Flowers have 5 petals, 10 stamens, and 1 style (thus the flowers are perfect).  Petals are pink to magenta, with white streaks.

Geranium robertianum - Herb-Robert geranium



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