Riddle me this

[Raybon]

OK, when I was at school we were always taught that plants need water, light and air to survive.
However, when digging (sometimes quite deeply)I am often bemused to find whole green plants just sitting there, bold as you like, particularly dandelions and thistles. How on earth (or IN earth) did they get to green up ?

[Nicos]

Perhaps they are on their way up from Australia??

..sorry !...no idea...tis really weird now I come to think about it!

[RaptorUK]

. How on earth (or IN earth) did they get to green up ?

These plants have chunky stores of "food" and use them to build leaves as they push up through the soil in search of light . . . they either find light before they exhaust their reserves or die trying . . .

[Greenleaves]

Wish mine would go on a diet then!