So starting a little early this year.. mostly because it's time NOW to prepare your holes or soil if potting..
I dug up my cascade today to raise it up and improve drainage, the improvement I did consisted of the following.
1 part soil from the existing hole
1 part compost material
1 part soil from the chicken coup
I got a bit tired of knocking the bricks loose so got a bag or mortar and busted out the old trowel
so by the time winter passes and spring hits, all that good nutrient will be broken down and available for the plant. I'll mulch it with a bit more compost soil after the soil has settled a bit.
Also note the irrigation.. Ive had enough of manual watering.. this year is gunna be painless.