Natural soil aeration.
Natural soil aeration.
There are all kinds of interesting ice growths.
Needle Ice
http://my.ilstu.edu/~jrcarter/ice/needle/
Hair Ice
http://my.ilstu.edu/~jrcarter/ice/hair/
Ice Flowers
http://my.ilstu.edu/~jrcarter/ice/flowers/
Pebble Ice
http://my.ilstu.edu/~jrcarter/ice/pebble/
I like the effect when severe frosts suddenly come and all plants are covered with ice, it looks like another world or a fairy tale. Especially if you look at this effect through a magnifying glass or other similar devices, an amazing sight.
severe frost out west: