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Weed Identification

big chickweed

Family

Caryophyllaceae

Scientific Name

Cerastium fontanum ssp. vulgare

Synonyms (former Scientific Names):

Cerastium fontanum ssp. Holosteoides
Cerastium holosteoides
Cerastium adsurgens
Cerastium triviale
Cerastium fontanum ssp. Triviale
Cerastium vulgatum

Habit

Mouseear chickweed is generally known as a short-lived weed. It germinates mostly in late summer, fall and early spring. It varies throughout the year. Flowers bloom from May to October. It is not tolerant of drought conditions; however it can remain green even under the snow in winter.

Leaves

The leaves are oblong shaped and have smooth edges forming a pointed tip. The leaves are also covered with long clammy hairs on the top upper portion and veins of the lower portions. The stems are covered with the same type of hairs.

Identifying Characteristics

Mouseear chickweed is not drought tolerant. Mouseear chickweed is a creeping, mat-forming species. Plants reproduce by seeds and roots.

Flower Seed Head

Mouseear chickweed flowers white and very small. The flowers are found in small groups at the end of branches.

Seed Fruit

Many small knob rounded seeds are found in the pods of the fruits that are small, tan, and cylindrical.

Where Found

This weed is found throughout North America at various locations- roadsides, woods, lawns, pastures, and abandoned cropland.

Growth Habit

Varies: 
upright and nonwoody
prostrate and nonwoody

Thorns or Spines

not present

Approximate Flower Diameter

pencil

Dominant Flower Color

white

Flower Symmetry

radial symmetery

Leaf Hairs

has hairs

Leaf Shape

Varies: 
round
oval

Leaf Arrangement

opposite

Leaf Margin

entire

Leaf Structure

simple

Leaf Stalk

none

Stem Hairs

has hairs

Stem Cross Section

round or oval

Milky Sap

not present

Root Structure

fibrous

Life Cycle

perennial

Ochrea

not present

Plant Type

Herb