We Grow Together $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". We Grow Together quantity Add to cart SKU: 239. Categories: Gardening, Hearts, Humor. Related Products Flowers Chase the Blues $20.00 Talk About It $20.00 Once in a while, I dig in my heels $20.00 The Beet Grows On $20.00