Have you had a lot of humidity (higher than usual) lately ? If so, your plants may be having a hard time transpiring. Transpiration is the process of releasing moisture (like sweating and evaporation rolled into one). Plants suck up water through their roots and move the water up through their stems and into their leaves, where they release the water (transpiration). Only about 5-10% of the water they intake is used for growth - the rest is released into the environment. The movement of water facilitates the movement of nutrients. So if the movement of water is SLOWED due to really high humidity (and this mostly happens in greenhouses when they are not properly ventilated) plants start to show signs of nutrient deficiencies of all kinds (maybe blossom end rot in tomatoes despite having plenty of bio-available calcium in the soil). That is to say; you could have a lot of misleading signs like: blossom end rot, or nitrogen deficiency (honestly I'm not sure which nutrients need the most water to be moved).....but the take away is the signs could be really confusing, and appear totally illogical. This only happens in high humidity situations; again like an improperly vented greenhouse, or if somehow you have managed to trap the humidity in your space...... this is a long shot.....but I lived on the Gold Coast (Broad Beach area) 30+ years ago...... and I still remember how humid it could get... especially further North. Clearly, some plants are better at moving the water in high humidity situations....tomatoes tend to have difficulty in very high humidity. Ensuring proper air flow may be helpful.

- Celeste Archer