The Duncraft free shipping offers usually require a minimum purchase and a coupon code, even if they are advertised on the Duncraft homepage. Drop by FreeShipping.org to check for the latest promotions, copy your desired code, and paste it in the "promotional code" box on the checkout page. Along with the Duncraft free shipping offers, FreeShipping.org is home to a slew of coupons for certain categories, including seed and birdhouses. If you buy seed three or more times per year, join The Duncraft Food Club for 10-percent off each order. On the checkout page, click on the "Gift message/Special delivery instructions" and enter the product name, number, quantity, and dates you the order delivered. It will be automatically shipped to you on the dates you choose.