416 COMPOSITAE (COMPOSITE FAMILY) 
Means of control 
In crops where thorough and late cultivation may be practiced, 
this weed is not difficult of suppression; but in tobacco fields, 
where care must be exercised in order to keep the large lower 
leaves of the crop uninjured, late tillage is a danger, and hand- 
pulling is the only practicable way of destroying late-blooming 
plants before the development of seed. 
JOE-PYE WEED 
Eupatorium purpireum, L. 
Other English names: Trumpetweed, Feverweed, Purple Boneset, 
Queen-of-the-Meadow, Gravel-root, Kidney-root. 
Native. Perennial. Propagates by seeds. 
-Time of bloom: August to September. 
Seed-time: September to November. 
St, Range: New Brunswick to Manitoba, 
southward to Florida and Texas. 
Habitat: Damp meadows, moist woods 
and . thickets, sides of streams and 
- ditches. 
Joe Pye was an Indian “herb doctor” 
of early days in New England, who is 
said to have performed many marvelous 
cures, mostly with decoctions of this 
herb. However that may be, its woody, 
fibrous, blackish roots, gathered in au- 
tumn and carefully dried, are still sal- 
able in the drug market for two to four 
cents a pound. 
Stem round, smooth or sometimes 
finely grooved, slender for its height of 
three to ten feet, usually purple, simple 
or with a few branches at the top. 
Leaves arranged in whorls of three to 
six, long-ovate, thin, smooth except for 
a slight hairiness of the veins beneath, 
Fig. 291. — Joe-Pye Weed ‘ 
ree a ia finely scallop-toothed, tapering to short, 
x4. slim petioles. Heads small, in rather 
