Remember the old story about Socrates
drinking a cup of Poison Hemlock?
Deadly stuff to be sure!
This same plant grows wild along
roadsides, creeks and wooded areas in Pennsylvania.
Right now – the
first week of June – many plants have already reached 8-feet tall
All plant parts are extremely
poisonous, especially the seeds, and one plant can produce 30,000 seeds!
Due to the toxicity of Poison Hemlock, bodily contact should be
Since the plant is a biennial (2 year
growth cycle) the best way to control its spread is to eliminate it
before it goes to seed.
Herbicides can be used for control in
addition to cutting or pulling, but
be sure to read and follow label instructions.
Poison Hemlock (above) is
sometimes confused with
Queen Anne's Lace (below)
Great care should be taken when
handling plant parts since they remain poisonous for years after being cut down.
Keep out of the reach of children,
livestock, pets and wildlife.
- All plant parts are
extremely poisonous to livestock and human beings,
so avoid contact. Plant parts can remain toxic for
- Brought to US from
Europe in 1800's
- Biennial herb grows
8 to 9 feet tall
- White blossoms in
- Purple blotches on
- Especially invasive
along stream banks
- One plant can
produce 30,000 seeds
- Control by pulling,
mowing (wear eye and skin protection) or herbicides
(read and follow label directions). Keep out of the
reach of children, livestock, pets and wildlife.
Being selective with weeds
The long and short of tomatoes