During my garden visit, Anthony mentioned that a number of my plants were likely suffering from boron deficiency. While googling I found this really fantastic website that shows pictures of each deficiency on tomato leaves.http://4e.plantphys.net/printer.php?ch=5&id=289
The first thing to check is your pH as this can affect what is available to the plant.
For short term emergency solutions is it okay to use the following, and what other alternatives are there available?
Potassium - Potash
Boron - Borax
Magnesium - Epsom Salts
Calcium - Gypsum
Nitrogen - Fish
As a side note, my mother is totally convinced that there is two different sorts of Epsom Salts and the one at the supermarket is not to be used on gardens... has anyone else heard this? I use that one all the time for my paw paws and it even says on the packet it is used as a fertiliser!