University of Missouri Extension

IPM1021, New December 2003

Vine Weeds of Missouri

Morningglories, annual (Ipomoea spp.)

Growth habit

  • Summer annual

Other names

  • Blue morningglory
  • Small white morningglory
  • Morningglory

Origin

  • Native or tropical America

Control classification

  • Moderately easy to
    moderately difficult

Note

  • Before using any any herbicide, read and follow directions on the label accompanying that product. Reference to specific trade names does not imply endorsement by the University of Missouri; discrimination is not intended against similar products.

Entireleaf morningglory
Entireleaf morningglory

There are at least five species of annual morningglories known to occur in Missouri, and three are considered regular pests. Bigroot is the only perennial.

The three annual morningglory species that cause economic loss are:

The cotyledons of ivyleaf and entireleaf are butterfly-shaped and essentially identical. The cotyledons of pitted are cut more deeply, a 90-degree angle, and tips are pointed, not round. Leaves on all morningglories are alternate along the stems, but leafshape is variable. Pitted and entireleaf leaves are heart-shaped; however, the leaves of pitted come to a tapering point and often have a tinge of purple around their margins, whereas entireleaf leaves are more rounded and lack the purple color. Ivyleaf leaves are densely hairy and have the English-ivy shape. All morningglories have funnel-shaped flowers, but colors vary. Pitted has white flowers. Ivyleaf and entireleaf usually have pale blue flowers.

Ivyleaf morningglory
Ivyleaf morningglory
 

 

Wild thing
 

IPM1021 Vine Weeds of Missouri | University of Missouri Extension

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