By Will Knocker:
The dreaded Parthenium Weed -spread by human activities such as road building -has gained a foothold in Nairobi National Park, especially in the Athi Basin area, where a pylon line is currently being constructed….floodwater also spreads the seeds, so we can expect mega-infestation after the current Rains…
Each single plant is said to be able to produce 25,ooo seeds -if you want to see the end result, look on the verges of the new by-pass from JKIA heading to the Thika Highway: what a mess….
The experts tell us that this is a plant (it is of the Feverfew family) which poisons its neighbours, including grass & is a major threat to African grassland ecosystems…in Ethiopia (where it first arrived in Famine Relief supplies) it has compromised thousands of acres of rangeland.
Parthenium causes allergic reactions in people & animals, so pull it up with gloves or a handkerchief…..if you see this plant: DESTROY IT!!
Parthenium is not to be confused with one of our commonest & most widely spread wild flower species Heliotropium (see above)
For more information: http://en.wikipedia.org/wiki/Parthenium_hysterophorus