247-Weeds 7

Fact Sheet No. 247, UMaine Extension No. 2200

Prepared by David E. Yarborough and Timothy M. Hess, The University of Maine, Orono, ME 04469.  Replaces March 1987 by Tom DeGomez, David Yarborough and Christopher Campbell. Revised April 2002.

Dogbane, Apocynum androsaemifolium

Flowering herbaceous perennial, flowers June-July.  Reddish stems 1′-4′ tall grow from horizontal rootstocks, branches smooth and spreading.  Oval leaves opposite, 2″-4″ long and 1″-2.5″ wide, often drooping on short stalks.  Flowers pinkish, bell-shaped and about 1/4″ wide, seed pods 4″ long and narrow, can be confused with bush honeysuckle.  All parts exude white liquid when broken.

Hawkweed, Hieracium pratense

Herbaceous flowering perennial, flowers June-July.  Hairy 1′-2′ tall, mostly leafless stems with many leaves at the base.  Ovate, hairy, basal untoothed leaves 2″-5″ long and 1/2″-7/8″ wide.  Dandelion-like flower, orange-yellow, up to 1/2″ across.

St. Johnswort, Hypericum perforatum

Flowering herbaceous perennial, flowers July-August.  Stems reddish and branching, 1′-2.5′ tall, woody at base.  Leaves oblong, entire, sessile, up to 1.5″ long with numerous, conspicuous translucent dots.  Numerous, five-parted yellow 3/4″-1″ wide flowers clustered at branch ends.

Sheep Sorel, Rumex acetosella

Flowering herbaceous perennial, flowers May-September.  Stems slender 6″-18″ arising from a crown.  Alternate leaves distinctly arrow-shaped with broad lobes and bitter taste, 1″-4″ long.  Red to yellow flowers at top of the plant, small and clustered in a whorl, male and female flowers on separate plants.

Bush Honeysuckle, Diervilla lonicera

Flowering perennial shrub, flowers May-June.  Bush 2′-4′ tall, twigs with four densely hairy ridges when young, oblong, opposite leaves oval at base and tapering at the tip, toothed and pointed at the end with short leaf stock.  Flowers yellow and funnel-shaped, grow in twos or threes at tips of stems and are 3/4″ long with protruding stamens.

Bush honeysuckle
Figure 10: Bush honeysuckle

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© 1987, 2002

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