Setting up Learning Relationships with Customers

How would you propose setting up learning relationships with customers?

Imagine you operate a chain of flower shops/garden stores. The products in your stores include fertilizers, weed, bug killers, tools, and other gardening supplies, as well as your own fresh bouquets of flowers and potted plants. Your customers consist primarily of avid gardeners who rely on you for their supplies, but you also have a lot of customers who come in just for your fresh bouquets and potted plants, often asking you to deliver them as gifts to others. You want to set up learning relationships with as many of your customers as possible so that they remain loyal to you.