This section is from the book "The American Garden Vol. XI", by L. H. Bailey. Also available from Amazon: American Horticultural Society A to Z Encyclopedia of Garden Plants.
The botanical name of this pretty little plant is Eranthus hyemalis. The generic name is very appropriate and signifies spring flower. This is about the first plant to unfold its flowers in the spring. The blossoms are yellow and are surrounded with a whorl of bright green, finely divided leaves. It generally continues to produce its flowers for about two months. The ordinary leaves of the plant appear after it has flowered. The plant thrives well under the shade of trees and upon shady banks and in these situations it is very effective, and is very pleasing when seen under the waving boughs of an evergreen shrub. The soil should be made moderately rich before planting, as the roots may be allowed to remain an unlimited time before being removed. The roots are of a brown color, very uneven in form, and are really underground stems. They should be planted about an inch and a half deep and about two inches apart. A dibble or garden trowel may be used in planting. The plants can be raised from seed, which should be sown as soon as ripe.
It is hardy as far north as in Ontario. - H. W. Smith, Baton Rouge, La.
 
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