It's really easy to grow asparagus at home and winter is the perfect time to plant them in your garden. In winter the crown of the asparagus is available. Start by digging some composted organic matter into the soil and then dig a large hole. build up a small mound at the bottom for the asparagus roots to sit over then fill in with soil and water in well. This will prevent any air pockets forming near the roots, which may cause them to rot. The patch will be bare until Spring and thats when the lovely asparagus spears will appear. You will have spears for about two months. Wait. Don't harvest for the first year until the crown has established. Just watch out for snails and slugs.