On 24/04/2021 14:58, Andy Burns wrote:
Chris Hogg wrote:

Harry Bloomfield wrote:

In my sprayer I have some diluted Rosate 360 TF according to
instructions, left over from last year. Will it still work this
year please, or do I need to make up a fresh batch?

It's basically glyphosate

Thinking about it, the ready to use trigger sprays of Roundup will will
sit on the shelf for many months at a similar dilution ...

Yup. I've just finished off one such which must be at least a couple of
years old and it still worked. A bit slow, but that was in a cold snap
when nothing was growing much.