The Garden
Name: Early Goldenrod
Type: Solidago juncea
Description:
A herbaceous perennial wildflower in the Asteraceae family. It is easy to grow and low maintenance once established. It does well in average, dry to medium, well-drained soil in full sun and tolerates poor, dry soils including soil with high clay content. It is a forgiving plant and is often found along roadsides and rocky banks, or in open woods. Goldenrod is sometimes blamed for the pollen that causes hay fever, however, that pollen and its irritating symptoms are actually caused by ragweed (Ambrosia species), whose pollen is airborne when goldenrod is in flower. As the common name suggests, this is one of the earliest blooming goldenrods, beginning to bloom in July and continuing through August. 
Location:
 
Yellow
Sun Level: Full sun
Height: 12-48 in.
Care:
To manage growth, you should divide plant clumps every 2 years.
Propagation:
Diseases:
 No serious insect or disease problems.  Leaf rust is an occasional problem.