I imagine their roots spread outward pretty far because they're such big plants. But I don't know ? Here's a picture halfway down this page
http://www.humanflowerproject....
We first planted 7 along the fence way in the back of the yard. Then someone here on ATP told me that we should have 10-20 plants per person in the family. So last year we added, I think, another 7 plants for a total of 14. This was our first year to harvest a few, But I read that the plants often produce for 20 - 30 years.
I sure love fresh asparagus. I can do without the canned type though. Too mushy for me.
Karen
