This is a foolproof solution for all gardens, it' s the easiest and the cheapest too. Have a look for urself.
This is the link, and yes it' s in english, although the site is in italian u have to look for the video 'PERMACULTURE WORM TOWER'.
Usually u use both the worm casting anbd/or the worm tea which is the urine. The urine can be used both straight and with the addition of water, that' s up to u.
When u use the worm tower there is no need, because u'll find that the worms will both spread the compost they feed on directly in the soil they live in, and they ' ll also fertilize it with their casting as they go... each day and night. A two ways compost, both traditional compost and worm casting. The worms will keep working in winter too although they slow down their activities, so the food will take longer to be used up from the tower and consequentially to break down.
The video will clear all doubts, i m sure.
Only thing u have to keep in mind is... how deep does the soil in ur area freezes in winter?
Bye for now,