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 Talk About It $20.00 Plant seeds of kindness every day $20.00 We Grow Together $20.00 Paws in the Flowers $20.00