You need to send an inquiry to initiate the purchasing process with the desired grower(s).
Sending an inquiry allows you to contact grower(s)/producer(s) and ask them information about their specific product, pricing, delivery, or other questions you have. The inquiry function alerts the farmer of your inquiry and allows them to respond to your questions. You are not committing to purchase anything yet - you are just gathering specifications of their product and starting a conversation. Once the conversation gets started and seems like a good fit, you can work with the producer to purchase their product!