You won't burn the lawn if you use a spreader. Just pay attention to the details in your research.
Lawnsmith does NOT, I bet, advise using a general 3in1 product in autumn.
This IS a great time to deal with moss, but not with that.
Personally I look after around 100 lawns and have been doing this job for ten years. I'm moving away from any granular feeds that kill moss, preferring to use liquid iron for that. It's just too easy to stain patios with granules.
I'd deal with the weeds in spring. Again, using a seperate liquid treatment.
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Lawnsmith does NOT, I bet, advise using a general 3in1 product in autumn.
This IS a great time to deal with moss, but not with that.
Personally I look after around 100 lawns and have been doing this job for ten years. I'm moving away from any granular feeds that kill moss, preferring to use liquid iron for that. It's just too easy to stain patios with granules.
I'd deal with the weeds in spring. Again, using a seperate liquid treatment.