Common Name: bittercress, hairy
Species: Cardamine hirsuta L.
Bayer Code: CARHI

Hairy bittercress is a winter or summer annual weed (depending on location). Stems can be 3-9 inches long, and the leaves are mostly on the lower portion of the stem in a basal rosette. Leaf margins are deeply lobed. Leaves at the base of the plant are larger than the leaves at the top of the plant. Small hairs can be found at the base of the leaf as well as on the top of the leaf surface. Flowers are small and white. Small round fruits (capsules) develop at the ends of each branch.
hairy bittercress flowers
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hairy bittercress seedlings
hairy bittercress
hairy bittercress
hairy bittercress
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CharacteristicTypeDescription
Growth Season summer annual weed OR winter annual weed 
Growth Habit upright OR rosette 
Leaflet Number four or more2 - 4 pairs of leaflets arranged alternately
Leaf Margin lobedshallowly toothed or with a few lobes
Leaf Hairs upper/lower surface 
Leaf/Leaflet Shape heart/kidney/spade 
Leaf Width <1/2 inch OR 1/2 - 1 inch 
Leaf Venation pinnate 
Leaf Arrangement alternate 
Root Type fibrous 
Flower Color white