Plant Peace $20.00 Inside Message you will grow 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". Plant Peace quantity Add to cart SKU: 1056. Categories: Gardening, Peace. Related Products Where the Heart Goes, Flowers Grow $20.00 Flower Letter $20.00 Once in a while, I dig in my heels $20.00 The Beet Grows On $20.00