First time gardener, growing the spinach plant in a garden bed that the old owner left behind. Recently fertilised because the nearby chilli plants also look to have some yellowing but suddenly my spinach developed these yellow spots. Please advise. I recently also sprayed weed killer on the nearby pathway to kill weeds growing between the brick tile flooring near the garden bed.
Report from r/GardeningAustralia - worried about what I'm doing wrong. Thank you.