Where the Heart Goes, Flowers Grow $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". Where the Heart Goes, Flowers Grow quantity Add to cart SKU: 573. Categories: Gardening, Hearts. Related Products It’s not Which Way We Face $20.00 Blue Columbine $20.00 Plant Peace $20.00 The Plot Thickens $20.00