Assalamualaykum sheikh, I’m starting a coffee roasting business, can you explain the rulings of zakat on grain? Also, do I have to pay separate zakat on the business account and my personal account? Jazakallahu khayran

If you are growing them and they have reached the nisab some of the people of ilm estimate 612kg, then if you do not irrigate them and depending on rain for example then u pay 10% as zakat if you are irrigating them then you pay 5% in zakat.