Wrong type of leaves

Remember as a child when something went wrong or you can back late and you always had an answer for what had gone wrong. Well when you grow up you can do what you did then just come up with any answer. 

We have all heard of the railway problem itch the wrong type of leaves on the tracks and then the wrong type of snow. Well I saw the latest rubbish article now it's the wrong type of Rain.

Remember when British rail came up with the one " Wrong kind of leaves " Leaves are leaves.

Then we had the wrong kind of snow, how many types of snow are there i ask.