Are these dark patches on my tomatoes bad news?

Hi guys

Ive got 6 tomato plants (Sun gold and Costoluto) growing in my greenhouse. A efw days I noticed these dark patches (see bottom leaf in this photo):



Is this blight? Shall I remove all leaves which show these dark patches on?

Thanks

 

Its not blight, you often see older leaves like that, I never bother about them.

 

Probably as @pete says, though seems a bit early for the leaves to be 'old' enough ?

Worth picking one of those leaves off and inspecting the underside with a magnifier to check for pests /aphids or as we found on one of ours last week it had Red Spider Mite so needed a regular spray with a fruit safe contact spray. ( ie soap based ones)

 

Ah ok, thanks, I will inspect tomorrow.

 

I'm pleased with the yield of my tomatoes this year - Money Maker - but as they ripen, some are developing dark spots on the base of the fruit. See pic. Any ideas?

 

Looks like blossom end rot.
Often a watering problem when the fruit are forming.

 

When you say 'watering problem' do you mean too much, or not enough?

 

Usually not enough, it has a link with calcium deficiency I think, but in most cases the reason for that is not enough water when the fruit is forming.

Apparently some varieties are more prone than others.

 

Pete is correct.
I had this problem so I took them off the plant. Gave them a good
watering with Tomorite. Then kept them damp but NOT wet by a bit
of water 2 times a week.
90% were blemish free after that

 

Interesting. I've harvested a few which were affected and simply cut off the black bit. The rest tasted good!! I hate waste!