Weed of the Month

Learn about noxious weeds and steps you can take to manage or eradicate.  Each month we will bring you a new profile and helpful resources.

December Weed Profile

Field Bindweed

Convolvulus arvensis

Field bindweed is a List C vining perennial in the morning glory family (Convolvulaceae).

Known to be in North America since the 1700s and in Colorado since 1872, it was introduced as a contaminant of seed. It can now be found in all 50 states. It is a native to Eurasia and Asia and naturalized in many other areas.

It has a thick taproot that can grow to 20-30 feet deep and multiple horizontal rhizomes with buds that form new plants. Plants can easily regrow from root fragments. The root mass can reach 2½ to 5 tons per acre.

The trumpet shaped flowers form in the leaf axis. Flowers form from late spring until frost. The 1-inch-wide flowers are white to pink and have two small bracts that form ½ to 2 inches below the flower.

Each flower produces a roundish fruit that contains 2 to 4 seeds. The seeds can stay viable in the soil for 20+ years.

Field bindweed stems are 5+ feet long. They are twisted and are either prostrate or can climb and cover other plants, fences, and structures.

The 2-inch long and 1-inch-wide leaves are alternate, simple and arrow shaped, smaller towards the ends of the stems.

A serious pest in wheat and bean crops, it also invades vineyards, orchards, degraded rangelands, landscaped areas, and lawns. Field bindweed can harbor plant diseases (potato X disease, tomato spotted wilt, and vaccinium false bottom).

Control using cultural techniques and/or systemic herbicides. It requires persistent efforts over multiple years. The bindweed gall mite, Aceria malherbae has shown some good success in areas that are grazed or mowed.


Pacific Northwest Extension – Field bindweed (PDF)


National Park Service https://www.nps.gov/articles/field-bindweed.htm

Washington State University https://smallgrains.wsu.edu/weed-resources/common-weed-list/field-bindweed/

Items of Interest

Weed of the Month


January Weed Profile – Knotweed

February Weed Profile – Rush Skeletonweed

March Weed Profile – Black Henbane

April Weed Profile – Chinese clematis

May Weed Profile – Houndstongue

June Weed Profile – Milk Thistle

July Weed Profile – Oxeye Daisy

August Weed Profile – Spotted Knapweed

September Weed Profile – Perennial Pepperweed

October Weed Profile – Yellow Flag Iris

November Weed Profile – Common St. Johns Wart

December Weed Profile – Field Bindweed


January Weed Profile – Dalmatian Toadflax

February Weed Profile – Common Mulllein

March Weed Profile – Mediterranean Sage

April Weed Profile – Saltcedar

May Weed Profile – Absinth Wormwood 

June Weed Profile – Eurasian watermilfoil 

July Weed Profile – Yellow starthistle 

August Weed Profile – Hairy willowherb

September Weed Profile – Yellow toadflax

October Weed Profile – Chamomile

November Weed Profile – Diffuse knapweed

December Weed Profile – Poison hemlock


January Weed Profile – Cheatgrass

February Weed Profile – Myrtle Spurge

March Weed Profile – Hoary Cress

April Weed Profile – Leafy Spurge

May Weed Profile – Scotch Thistle

June Weed Profile – Dyer’s Woad

July Weed Profile – Orange Hawkweed

August Weed Profile – Purple Loosestrife

September Weed Profile – Teasel

October Weed Profile – Canada Thistle

November Weed Profile – Russian Knapweed

December Weed Profile – Russian Olive