Mammyjammy Posts: 22
Grown super marmande type toms for the first time. The plants look lovely and healthy and there is plenty of fruit but when they get to a reasonable size, brown patches appear, eventually joining up and turning black. Don't think it's blossom end rot as it doesn't look the pictures I've looked up on t'internet.
Can you post a photo? BER affects the bottom (blossom) end of the tom and doesn't spread, per se.
Click on the tree icon at the top of the posting box, then click select, then choose your photo, then click upload, then when the pic appears, click save.
cant be done from iPhones though.
Potato blight is either Early or Late Blight. Symptoms of both should show up on the plant well before they appear on the fruit. Mammy says the plants look healthy. I'm very interested to see the photos.
Here are the photos – you will see apart from leaf curling which may be due to temperature fluctuation in the greenhouse, the plants look reasonable healthy
Mammy, if it were either Early or Late Blight or any of the common fungal diseases there would be evidence on the stems and foliage long before this. However, those spots on the leaves in the second photo (from the top) have me thinking it might be Anthracnose, a fungal disease.
Anthracnose starts on the fruit as a single infected spot but will eventually spread to join up as you describe. The first manifestation is usually like a small dent in the surface of the fruit that will look soft and a bit damp. Can you have a close look at all the fruit?