1. By: Ray Hanley http://www.dec.ny.gov/animals/39809.html

2.  Native to central & southwest Asia  Found in open fields, along roadsides, along streams in natural areas, disturbed soils, and railroad embankments  Ornamental- showpiece ◦ Great Britain to U.S.  Favorite of bee keepers

3.  Biennial or perennial herb in carrot family (Apiaceae)  Height – up to 20 feet  Hollow rigid stem – 2-4 inches in diameter ◦ Dark reddish purple blotches  Large compound leaves- up to 5 feet wide  White flower head up to 2.5 feet wide ◦ Blooms late June through August  Seeds- dry, flattened, and oval (3/8 inch long)

4. http://factoidz.com/the-giant-hogweed-a-toxic- invader/ http://news.bbc.co.uk/2/shared/spl/hi/pop_ups/06/sci_nat_to p_ten_0wanted0_list/html/4.stm

5. http://www.languard.co.uk/invasive-weed-management/giant- hogweed/

6. http://www.sleloinvasives.org/about- invasives/target-species/giant-hogweed/ http://nyis.info/plants/Images/GH_Compare_1.jpg

7. http://www.languard.co.uk/invasive-weed-management/giant- hogweed/

10. http://plants.usda.gov/java/profile?symbol=HEMA17  Range: ◦ Canada ◦ America ◦ Britain ◦ France ◦ Germany ◦ Belgium ◦ Asia

16.  Suppresses growth of native plants  No native predators  Impacts on wildlife- no food or habitat  Increased soil erosion ◦ Leaves barren soil in winter when dormant

17.  Do Not Touch!  Brushing against ◦ Minor burns  Broken leaves or stems ◦ Clear watery sap-glucoside  Sap causes sensitivity to sunlight ◦ Skin contact-Severe slow to heal burns, scarring, blistering, painful sores, and purplish or blackened scars ◦ Eye contact- severe irritation or even blindness  If in contact- wash with soap and cold water ◦ Medical attention is advised http://www.dcnr.state.pa.us/forestry/invasivetutorial/gia nt_hogweed.htm

18.  Very difficult to eradicate  Use caution in any type of removal  Physical Removal ◦ Mowing, cutting and use of line trimmers ◦ Biocontrol ◦ Digging out roots of plant ◦ Seed dispersal is an issue  Chemical Removal ◦ Pesticides- non selective

19. http://www.wspenvironmental.com/expertise/invasive-species-control

20.  http://nyis.info/plants/GiantHogweed.aspx http://nyis.info/plants/GiantHogweed.aspx  http://www.sleloinvasives.org/about- invasives/target-species/giant-hogweed/ http://www.sleloinvasives.org/about- invasives/target-species/giant-hogweed/  http://factoidz.com/the-giant-hogweed-a- toxic-invader/ http://factoidz.com/the-giant-hogweed-a- toxic-invader/  http://www.dec.ny.gov/animals/72766.html http://www.dec.ny.gov/animals/72766.html  http://www.na.fs.fed.us/fhp/invasive_plants/wee ds/giant-hogweed.pdf http://www.na.fs.fed.us/fhp/invasive_plants/wee ds/giant-hogweed.pdf