Broad Beans is this frost damage or over watering

[SteveDevineParticipant]

I’m growing aquadulce claudia in my unheated greenhouse. They germinated under fleece and are all doing well after 6 weeks they are around 8 inches high. A couple of weeks ago I took the fleece off and there is some evidence of black leaves on a few plants. Google suggests it is either frost damage or over watering.

– I think they were unprotected last week in a single night of -1 temps
– I have only watered them twice, once when sown and once a week ago.

All replies greatfully received.

Thanks
Stee

[Author]

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