Castor Plants
- Thread starter goonybird
- Start date
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Glyphosate
Trouble is, you have to spray it on the leaves, which are huge, and the plants are 2 to 30 feet tall... Who wants to spray in the air around them when the wind can blow it back on you? Here in Hawaii, they grow so fast it's ridiculous, and the honey bees love them, and you sure don't want to poison them, right?
You don't have to spray the whole plant with glyphosphate to kill it. It kills the root system.
Cut them down, then stump treat with picloram, triclopyr, or glyphosate.
A total information pdf on how to control them can be downloaded here:
https://wric.ucdavis.edu/information/natural areas/wr_R/Ricinus.pdf
A total information pdf on how to control them can be downloaded here:
https://wric.ucdavis.edu/information/natural areas/wr_R/Ricinus.pdf
Thanks. Found that report. Looks like cutting and poison is the long term answer. The ones on the lot next door are already 35+ feet tall. In my previously clear lot, 2 to 6+ feet high already. I'll knock down/dig up what I can with the little tractor, then whack and poison the big ones on the neighbors lot, which is the mother seed farm... suspect why they suddenly appeared in such numbers, but just have to deal with what is. Thanks for your input.
Mike
Mike
