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Weed Identification

common mallow

Family

Malvaceae

Scientific Name

Malva neglecta

Other Common Names:

cheese plant
buttonweed
cheeseweed

Synonyms (former Scientific Names):

Malva rotundifolia

Habit

Usually growing along the ground with stems pointing upward this plant spreads by both seed and by adventitious roots from broken stems. Roots usually consist of a taproot with course branching secondary roots.

Leaves

Leaves are alternate and round with veins radiating from the center where the blade attaches to the 5-20 cm long petioles.

Identifying Characteristics

Round leaves, white star shaped flowers and button shaped fruit.

Flower Seed Head

Flowers are white to light lavender with a purple tinge shaped like a 5 pointed star. This plant flowers late spring through early fall.

Seed Fruit

Fruit is shaped like a pizza with 12-15 segments each containing a single seed. Seed are black to reddish brown and kidney shaped.

Where Found

Throughout North America this plant is a occasionally found in agronomic crops but is more of a problem in landscapes, low-maintenance turf situations, and nursery crops.

Growth Habit

upright and nonwoody

Thorns or Spines

not present

Approximate Flower Diameter

Varies: 
pencil
dime

Dominant Flower Color

Varies: 
white
pink

Flower Symmetry

bilateral symmetry

Leaf Hairs

has hairs

Leaf Shape

round

Leaf Arrangement

alternate

Leaf Margin

Varies: 
lobed
serrated

Leaf Structure

simple

Leaf Stalk

longer than leaf

Stem Hairs

has hairs

Stem Cross Section

round or oval

Milky Sap

not present

Root Structure

taproot

Life Cycle

summer annual

Ochrea

not present

Plant Type

Herb