From the Comox Valley Echo, Tuesday 1 October 2013, Ask a Pro
Question: Should I be putting compost on the garden now?
Answer: I can’t think of a time when it is not good to add compost. The fall is an especially good time, though. You will be protecting your garden from the driving winter rains that compact the soil. The compost helps to insulate the soil and allow those millions, oops trillions, of worker microbes you have to continue to do their magic. The warmer the soil, the busier the microbes. In the spring, the soil will be so primed for growing your plants; you will be startled at how vigorous your veggies will be. So, yes, find a sunny day and spread a layer of compost on your garden. If you want to take it a step further, plant a winter cover crop on top.