I am interested in how folks fertilize their herbs and vegetables. I have potted herbs - basil, rosemary, mint, chives, dill, cat-mint, as well as lettuce, tomatoes, bell pepper, chilli, spinach...

I would like to know how to fertilize and how often.

I'm thinking of using household ingredients: egg shells for calcium, aquarium water for nitrogen, urine, milk and coffee grounds are all other ingredients that I have readily on hand.

However, I'm not sure how often I should fertilize and in what combination. Obviously some plants like the tomatoes will need more, than say the rosemary. Difficult!

I cannot make a compost heap or have a wormery where I live, so I've gotta do the best I can with what's at hand, and I want to keep it organic.

Any advice would be much appreciated.