Tomato leaf problems - help

[Westi]

Welcome to the forum Kagahara - love the aviator!

My instinct says blight, & spores can get into greenhouses & tunnels but your description doesn't quite fit as blight will give you brown spots on the leaves initially then the stem (sometimes both at once), but then they turn to mush with no yellow type leaf die back as it is quick. Maybe something to do with the sandstone? Is it absorbing all the nutrients & not releasing it?

Be patient & the clever girls & guys will be on site our tomorrow, your tonight to share their wisdom! (Don't quote me on the time zone thing)!

[Monika]

I think your tomatoes are just getting old - the curling, yellowing and patches are natural sign of ageing. I know you are in California but presumably even there autumn must be rolling in .....