Virginia Tech Weed Identification Guide

Smallflower Morningglory: Jacquemontia tamnifolia

smallflowermg9-5.jpg (67128 bytes) Weed Description:  A trailing or climbing summer annual with light blue flowers that may reach 6 1/2 feet in length.   Smallflower morningglory is an isolated weed of agronomic crops, nurseries, and landscapes in the southeastern United States.
Seedling: Cotyledons are rounded with slight indentations and resemble those of a mustard.  Cotyledons are without hairs.

Roots:  Taproot.

smallflowermg3012.jpg (61831 bytes)
smlflwr3-19.jpg (155178 bytes) Leaves: Occur on petioles that are alternately arranged along the stem.  Leaves are approximately 1 1/4 to 4 1/2 inches long by 3/4 to 3 inches wide.  Hairs occur on the margins and only occasionally on the leaf surfaces.  Leaves are ovate to elliptic in outline.
Flowers:  Many light blue flowers occur in clusters with many bracts below.  Individual flowers are approximately 1/2 to 3/4 inch in width.

Fruit: A capsule.

Identifying Characteristics:  A trailing or climbing vine with ovate to elliptic leaves and many light blue flowers.   These characteristics help to distinguish smallflower morningglory from most other weeds as well as other morningglories.