HELP PLEASE!!!!! We bought 2 of these maples october of last year can anyone tell us what could be wrong with the one in the picture it got very few leaves on it this year and they all turned black the nursery we bought them from said it needed iron and fertilizer we did that a month ago an noting has happened if I scratch the trunk with my finger nail its still green but the small branches just snap like they are dead. The other tree is planted in the same conditions if you see the brick in the right hand corner of the pic thats where the other tree is it leaved out but the leaves are already turning color and the very top has alreay lost its leaves/