The plants are waiting for warmer weather to finally realise their potential outside. Unfortunately, it will remain very cold this week with sub-zero temperatures at night. There are no recognisable diseases, I just think they are a bit stalky. They don't need much water because evaporation is low.
@DivineSeeds, I am taking part in your Grow competiton. For germination there are 2 other plants not from divine seeds. They will be removed next. Is this ok for the competition?