Garden Pests and Diseases: Discoloration on tomato plant leaves, 1 by millsy5

millsy5 wrote:
Hi,
I\'m growing a tomato plant in a container. Recently I noticed the dark patches and discoloration on one of the branches (see attachments). Any suggestions on what the cause of the issue might be e.g. disease, over/under watering, nutrient deficiency, etc.? I\'m a noob so don\'t know a whole lot about growing.

I\'m growing Moneymaker which are Indeterminate. According to Google they grow up to 200cm (79\") in height. Currently the top of the plant is 53cm (21\") from the top of the soil.

The container is 12l (3.17 US Gallons) which may be too small?

I grew the plant in 100% compost (packaging says it\'s a reduced peat mix enriched with seaweed).

I use an inorganic liquid tomato fertilizer which has a mix of 4-5-9. I read somewhere to fertilize once every 2 weeks so have been doing that. I think I may have given 3 applications so far.

I normally water every 1-2 days, depending on the temperature.

Let me know if any additional information is required and I\'ll try to provide.

Thanks