Once in a while, I dig in my heels $20.00 Inside Message Blank Inside Packages of Heartstrings® cards are shrink-wrapped and sold in sets of 10 cards with envelopes. The actual card size is 4 1/4" x 5 1/2". Once in a while, I dig in my heels quantity Add to cart SKU: 848. Category: Gardening. Related Products The Season to Remember Your Roots $20.00 Hose/Snake $20.00 Plant Peace $20.00 Paws in the Flowers $20.00