Poa pratensis

(c) John M. Randall / The Nature Conservancy
Kentuck Bluegrass is a
dense
grass
with smooth, upright stems. At the top of the stems are
clusters
of greenish flowers. This plant grows one to three feet
tall. Kentucky Bluegrass is just one of many species of
bluegrass, and is one of the most common. Kentucky Bluegrass grows
in meadows,
fields,
roadsides, open woods, and streamsides. It can grow in dry
or moist soil. It is very competitive
and will often crowd out other plants. Bluegrasses are
perennial,
so they live more than one year. USGS-NPS Vegetation
Mapping Program (biology.usgs.gov/npsveg)

Dr. M. Halling
Kentucky Bluegrass leaves
are blades, up to eight inches long and 1/4 inch wide.
Leaves grow from the base of the plant, and the tip of the
leaf resembles the bow (front) of a boat. Bluegrass blooms from May
to August. Flowers are tiny, growing on small spikelets in
clusters at the end of the stems. Each spikelet is 1/4 inch
long; a cluster can be six inches long. Tiny reddish
fruits
take the place of flowers and provide seeds
for many animals. Kentucky Bluegrass
spreads by rhizomes,
stems that grow sideways underground. Copyright, Purdue
University and the Purdue Forage Information web
site

Copyright, Ohio State University
(c) John M. Randall / The
Nature Conservancy Many birds eat the seeds
of bluegrass, including: Wild Turkey, ducks and geese,
Northern Bobwhite, sparrows, and doves. Meadow Voles and
other small mammals also eat seeds. Rabbits and deer eat
leaves and stems. Many, many insects use
bluegrass as a food source. Grubs (beetle larvae) eat the
roots, and leafhoppers and caterpillars
eat leaves. Earthworms, snails,
slugs, isopods, and millipedes eat dead leaves, stems, and
roots.


Copyright, Ohio State University
Some animals help Kentucky Bluegrass spread by pooping seeds out in new places.
Many predators are attracted to bluegrass to feed on the animals that feed on the grass. Mantids, spiders, ground beetles, and moles are some of the predators found near Kentucky Bluegrass.
Some fungi attack bluegrass, a common one is Powdery Mildew.
Because Kentucky Bluegrass grows just about everywhere, it is found with many different species of plants. Some common associates of bluegrass include: Wild Strawberry, cinquefoils, Common Dandelion, and buttercups.
Since bluegrass is so dense, it provides great cover for small animals, including insects, mammals, reptiles, spiders, amphibians, and birds (especially ground feeders). Ground-nesting birds, such as Northern Bobwhite, Wild Turkey, ducks, and geese, often build nests among Kentucky Bluegrass and other grasses. Many tree-nesting birds use grass stems and leaves as nest material.
Kentucky Bluegrass is believed to be an introduced species, probably brought from Europe or Africa.
Relationships in Nature:
Animals
Using as Food Source Animals
Using as Shelter Associations
With Other Plants Powdery Mildew Pa Japanese Beetle
Relationship to Humans:
People have made great use of Kentucky Bluegrass as a lawn grass. It is also planted for horse farming, since it is considered a good food source for horses. Because it is so competitive, Kentucky Bluegrass can push out other native species of grass in some areas.