Grow your own - Sustainable New Zealand Presentation Pack You can learn even more about why growing your own fresh produce is so beneficial in this educational presentation pack! Pack contains, set of gummed stamps, gummed miniature sheet and a first day cover. (Product contains seeds). A great way to save money, feel good and eat healthy is to grow your own herbs and vegetables. Not only is it extremely satisfying to see your hard work sprout into life, you know exactly where it's come from.