@schulz995 , something does not make sense ---  Prior YE inventory ( value ) + all inventories acquired during the year LESS  current year end inventory should be what has been sold/used ---- so please look at the inventory reconciliation ( $ amount)  i.e. all the entries  in the inventory area.  Perhaps you also need to look at the  gross sales  especially if yours  has no  value add i.e.  like you but flowers , arrange these  and sell.

If the above fails to uncover, perhaps you can share the  items on schedule-C -- just line number and amounts  ( no personally Identifiable information please-- this a public board -- and then may be  one of can see why  IRS is claiming a negative inventory.