[andyw]

With all your advice so far my plants are doing really well, the ones in the greenhouse are all over 5ft tall with plenty of small toms on.  A few of my money's makers have toms that are about 4 cm in diameter.  At some point will the ŵight pull the truss down and break?  Should I be supporting these trusses now?

[sunshineband]

You could put in some support now, ahead of the game

(I use baler twine, tied loosely around the truss stalk, and attached to the roof bars of the greenhouse)

[andyw]

Sound good, will start doing that now.