When the flowers start to finish and shrivel up the tomato will start growing from the point at which the petals came from. Best time to start feeding them was when flowers first grew but not to late to feed them now! Always remember to pick out the small new shoots/leaves that appear between forking off branches as they don't do nowt but grow extra leaves that take away energy and goodness from the tomato.
Hope you don't mind Jayell if i ask a tomato question too?
I have a tom plant in a medium to large pot which is in a bright but sheltered corner of the patio. Its doing well but I wonder if I should stop it at a cerain stage. It has 4 trusses so far, would it be wise to pinch the tip out now?
I have an organic tomato feed which I'm using every other water and the pot is about 10 inches wide. Its doing really well. Its lovely and green, is about 4 feet high and has 4 trusses. I have taken out any shoots in the forks as its grown.