Forest Preserve District of Cook County, Illinois
Nature Bulletins
Newton Home Page

Introduction and Instructions

Search Engine

Table of Contents



Spring Wildflowers of the Woodlands
Nature Bulletin No. 152   April 24, 1948
Forest Preserve District of Cook County
William N. Erickson, President
Roberts Mann, Supt. of Conservation

One of the fascinations of spring is the procession of wildflowers that carpet acres and acres of the woodlands. In the prairies and in cultivated fields and lawns, the ground freezes to a depth of two or more feet. But in the woodlands the forest floor is snugly blanketed by undrifted fallen leaves and snow, and freezes only a few inches deep. The rich loose porous leaf mold holds moisture and supplies abundant food for a luxuriant growth of plants. It is saturated by the melting snows and early spring rains.

As soon as this forest soil is warmed by the sunshine and rising temperatures, the early wildflowers push their leaves through the surface. They grow rapidly because of the large amounts of ready plant food stores in their fleshy bulbs, roots or rootstalks. Many produce leaves, bloom and seed, days and even weeks before the other larger leafy plants and the trees come into full foliage and shade the ground. They seem to know that they must crowd almost a whole year's work into a few short weeks.

The earliest and densest carpet of blossoms is furnished by the spring beauty which, in March, sends up narrow leaves a little wider than a blade of coarse grass. It has clusters of dainty flowers, each with five white or pink petals lined with veins of darker pink. These flowers open and face the rising sun in morning, gradually turn, and face the setting sun at evening Then they fold up for the night. During the day, if the sun is obscured in clouds, they close until it reappears.

The hepatica, with blue, lavender or pink flowers on fuzzy stems, blooms about the same time. Then the bloodroot, the dog-tooth violet or adder's tongue, the purple trillium, the Dutchman's breeches and the Jack-in-the-pulpit -- in about that order. Then the violets, the Jacob's ladder and, in some localities, the white trillium. Then the late spring wildflowers of the woodlands: the blue phlox, the mandrake or May Apple, and the wild geranium.

Come out, get acquainted with the wild flowers and enjoy them, but remember: "LOVE 'EM AND LEAVE 'EM"

To return to the Nature Bulletins Click Here!
Hosted by NEWTON

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Sponsered by Argonne National Labs