Click on image to enlarge
|
DESCRIPTION:
Morningglories, often called annual morningglories, have heart-shaped, first
true leaves with deep lobes at the base. Seedling leaves are more deeply
notched and much larger than those of field bindweed.
Mature plants have long stems that climb and twine. The funnel-shaped
flower varies in color, from violet or blue to pink and red. Morningglories
are a major weed problem in New Mexico, Arizona, and in the San Joaquin
Valley of California, where several species of Ipomoea are found.
Seeds germinate down to a depth of 4 inches (10 cm) or more, much deeper
than most annuals. Most seedlings emerge following irrigations, but they
may also appear when surface soil is too dry to allow germination of other
annuals. Control is critical from crop emergence to harvest. Destroy
seedlings while they are small, because once they have twined up stems they
are difficult to control without injuring the crop. Seeds remain viable in
soil for long periods.
Broadleaf ID illustration.
|
