anything kelpy or bone meal would work, but also likely to be a cat attractant - if you’ve got them in potting mix, don’t fuss, good rule of thumb is ~ 3 months fertiliser in that already. You could try some aged compost if you like, cow turds are great for it.
I’m not sure. Granules might smell less tasty?
I already have some designed for tomatoes and vegetables but looking into the nitrogen levels will tax my last two brain cells
https://www.bunnings.com.au/powerfeed-500g-tomato-and-vegetables-controlled-release-with-troforte_p2962234
anything kelpy or bone meal would work, but also likely to be a cat attractant - if you’ve got them in potting mix, don’t fuss, good rule of thumb is ~ 3 months fertiliser in that already. You could try some aged compost if you like, cow turds are great for it.
The potting mix did say it had plant food in it, so that’s good. Maybe it doesn’t need extra for a while unless their growth slows or leaves yellow