I checked the pH (mixed soil with some water and used my pH / EC meter) and it was around 6, so I thought it should not be nute lockout, cucumbers are supposed to be between 6-6,5?

I have no clue but I would guess it's iron, guessing from images I've seen, but I'm surprised how it could be lacking iron if a tomato is doing fine in the same soil.

Also whatever it is, how should I fix it?

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[–] dgdft@lemmy.world 2 points 1 year ago (1 children)

That’s very helpful, thanks! Unfortunately, this one is over my pay grade - nothing you’ve mentioned seems like an obvious culprit to me.

You can definitely try iron supplements, but given that your other plants in the same soil are doing okay, iron deficiency doesn’t seem to be a super-likely cause either. You might be better off starting fresh from seed, given that cucumbers take off rather fast. Sucks to lose a plant, but you’ve given it a strong setup here.

[–] zenforyen@feddit.org 2 points 1 year ago

Okay thanks, at least good to know I'm not doing anything obviously wrong.