Simply insert the fertilizer box into your soil and fill it with your chosen fertilizer, ensuring an efficient and hassle-free feeding process for your plants. Unit Quantity: 12 Compatible Plant Type: Flower,Potted Plant,Bonsai,Orchid,Small Plant,Houseplant,Balcony Plant,Hanging Basket,Outdoor Garden Features: Reusable,Durable,With Lid,Easy to Use,Prevents Animal Access,Prevents Fertilizer Theft,Adjustable Fertilizer Release,Protects Flower Pots Type: Fertilizer.