On 28/05/2020 22:33, Nick Maclaren wrote:
In article ,
Jeff Layman wrote:
On 28/05/20 16:43, Nick Maclaren wrote:
In article ,
David wrote:
I (think I) know that over time the nutrient level in bagged compost
reduces.

Is there any reason not to use up last year's still bagged compost if you
add more nutrients?

Or without bothering to do that! Most nutrients do NOT reduce with
time, and the only one I can think of that would is nitrogen, and
then only if the compost has been kept damp. I regularly use such
things 5 and more years old, without trouble and without adding
anything (at least for a short period).

+1

Anyone know where the OP's assumption might have come from? Has it ever
appeared on the bags themselves as a sort of shelf life?

Dunno, but I once saw a 'use by' date on a packet of salt :-)

That one isn't quite as daft as it sounds. Table salt has some modifiers
in it to encourage free running even in our damp climate. It will
eventually set like a rock if you leave it on the shelf for too long.

OTOH Rock salt that you grind before use has not such limitations.

--
Regards,
Martin Brown