Giant hog weed
Heracleum mantegazzianum, otherwise known as Giant hog weed, is indigenous of Pennsylvania. This weed is both federally and by the state of PA as a noxious weed. This is actually one of the scarier noxious weeds. The reason is its poisonous sap. The Giant hog weed can cause severe burns when it comes in contact with the skin. Contact with the eyes an cause temporary and even permanent blindness. One Giant Hog weed plant produces up to 20,000 seeds. Because of its poisonous sap, it is important to wear protective gear when trying to remove this weed. With chemical weed control, continuous that is, it takes up to five years to completely rid your area of this common weed. Triclopyr and glyphosate are the most common herbicides used for this matter.
Goats rue
Galega officinalis, otherwise known as Goats rue is deemed both federally and by the state of PA as a noxious weed. This is a flowering weed, and actually isn't all that unsightly. The problem is, it will be stubborn and take over your flowers you planted intentionally. This common weed, goats rue, actually originated in Central Asia. Most noxious weeds, come from another area, and that's why they spread so quickly. There are no natural predators of these common weeds, so unless taken care of by us, will run wild. Goats rue is very hard to get rid of. Typically the use of herbicides have to be used along with the manual removal of these common weeds. As herbicides are selective, you want to make sure you use the correct one by reading the label and asking a customer service representative. One suggestion would be glyphosate.
Bull thistle
Cirsium vulgare is the scientific name for Bull thistle. This is a PA deemed noxious weed. Bull thistle is common to, and originated in Europe and Asia. This common weed is actually from the sunflower family. One healthy plant can produce anywhere from 5,000 to 50,000 seeds*. That's a lot of spreading! The only way to stop the cycle is t remove before the head flowers, as that's when the seeds will spread. There is a lot of hard manual work, such as pulling before it flowers. Chemical control would be herbicides such as clopyralid and glyphosate, preferably used as a pre-emergent weed control.
So you see, although common and sometimes even pretty, it is very important to rid your lawn/garden of these common weeds. Please exercise all caution when doing so. Follow all directions and read the label of any herbicide if using as a weed killer thoroughly. Also wear protective gear, even when manually pulling these weeds.
Published by Jennifer Bove
I am a parent of three wonderful children and a grandparent of one, so I have plenty of personal experience to share in that area as well as some schooling in early childhood development. I Also have some sc... View profile
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- This common weed, goatsrue, actually originated in Central Asia.
- Goats rue is very hard to get rid of.
- One healthy plant (goatsrue) can produce anywhere from 5,000 to 50,000 seeds*.




25 Comments
Post a CommentI am glad we don't have any giant weed hog growing here in Ohio (at least I don't think we do).
Man, these sound like some terrible ones. I think you did your homework on this one, as always Jennifer. Great work.
Good job on this, Jenn!
This is very interesting, Jennifer!!
Good information!
I'll bet plenty will be glad to learn about how to remove these weeds properly and safely (scary about the poisonous sap of the Giant Hog Weed).
I really enjoyed reading this, Jennifer!!
Good information to know. Nice job, Jennifer. :-)
50,000 seeds from one plant!!Wow.
That first one is a doozy! Great info.