By Alextb
London,
England 
Could someone please tell me why my Margeurite leaves are going brown? This is the 4th out of 7 to do so.
2 out the back have done it and this is the second at the front to do so.
The soil drains well, and they have had plenty of water.
10 Jul, 2015
Answers
Thanks Owdboggy. They are in a raised bed, so I am no closer to knowing what has caused this.
10 Jul, 2015
Forgot to say unseasonable cold!. They are tender. Cold winds play havoc with them.
10 Jul, 2015
There are more reasons for leaves growing brown than there are leaves on the plants.
Various things come to mind, faulty watering though probably not in your case, too much sun on the roots ie the pots they are in bake the roots, too dry an atmosphere, Chrysanthemum eelworm, Red spider mites. Take your pick.
10 Jul, 2015