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The investment in selling flowers is too simple. If you want to attract others' attention, you can display some crystal artworks or oil paintings in the flower shop, and you can also sell some gift wrapping paper or boxes. If the owner can arrange flowers, you can teach others to arrange flowers at the door of the store, which is very attractive to others. And it is romantic to send flowers and boxes of crystals to girls together, and girls will like it very much. You can sell some books about flowers.
You can sell some fine products, others can buy flowers, and you can decorate your wedding car.
You can also make some dried flowers or specimens to sell, and these flowers will never be sold, which not only saves the cost, but also sells the flowers twice. Or start a small class, teach others illustrations, protect flowers and make them live longer.