Weed control questions
Hi all, hope everyone is well! I have 2 major weed problems currently on my property. A yellow flowering thistle and St Johns Wort. The wort covered and entire side of a hill however the thistle mostly along my seasonal creek. I gave the thistle a good whack with a spray while the creek was dry and then mulched up under my mower blades. I think our problem was we didn't get to it soon enough as our property changed hands when we should have been beginning to spray. We took over our property in Late October. Questions are: when do I start treating for such large surface areas so I know for next year? And will a selective weed spray do as we still have a lot of natural pasture growing with these 2 particular weeds? Will weed spray still contaminate a dry seasonal creek once waster starts flowing again? What is a recommended spray and what is recommended equipment for such a large area? Will a back pack spray be sufficient due to the gradient of the hill as I wont safely be able to navigate a vehicle.