there are so many 'wisdoms' passed down through the gardening ages. Many are totally untrue.
This is probably of them.
See also; 'You can't move paeonies' and 'wild flowers need poor soil'
They're said to remove nutrients from the soil as they break down. It's probably true but in practice the moisture retention and weed control outweighs that. and you could always add nutrients. ( I don't)
I spread them round as soon as I create them (or as soon as I get round to it). I put them round shrubs
That's good Jacqueline
Anything for the bees in that Teddybear?
All those trees
I'll discuss plants and gardens with anyone from anywhere
I'll keep the worms untainted. I don't think blackbirds like mustard or dead worms.
Delphiniums germinate cold. As do most of that family