352 LABIATAE (MINT FAMILY) 
Time of bloom: April to July. 
Seed-time: Late May to August. 
Range: Newfoundland to Ontario and Minnesota, southward to 
Georgia and Kansas. 
Habitat: Moist or shady soil; lawns and yards, waste places. 
In old days, before the hop took its place, this plant was used 
for flavoring and clarifying the home-brewed ale. Like the Plan- 
tain, it seems almost domesticated and is a familiar weed about 
dwellings and in towns. 
Stems slender, prostrate, and creeping, with many small, ascend- 
ing branches, very leafy, three to five inches high. Leaves rounded 
or kidney-shaped, scallop-toothed, green on both sides, with slender 
petioles. Flowers in small axillary clusters, pale purple, spotted 
with deeper purple; corolla about a half-inch long, its upper lip 
with two lobes, three lobes in the lower lip, the upper pair of 
stamens nearly twice the length of the lower ones, rising against 
the upper lip; the tube more than twice the length of the five- 
lobed, hairy calyx. The four small nutlets ovoid and brown. 
Means of control 
It is almost impossible to dig out this weed and get all of the 
slender, creeping rootstocks. If the infested ground is a lawn the 
surest method is to skin off the rather shallow layer that contains 
the roots and probably also a good supply of the seeds, and relay 
with new sod or sow with clean seed. 
HEAL-ALL 
Prunélla vulgaris, L. 
Other English names: Self-heal, Hock-heal, Heart-of-the-Earth, 
Carpenter’s Herb, Sicklewort. : 
Manin Perennial. Propagates by seeds and by rooting at the 
nodes. 
Time of bloom:. May to October. 
Seed-time: June to November. ; 
Range; Nearly all parts of the world. Native to Europe and Asia. 
Habitat: Fields, lawns and yards, open woods, and waste places. 
.A frequent pest in lawns, stooling out when beheaded by the 
