My father always referred to flowers or plants that appeared out of nowhere “volunteers.” Is that the right word? Anyway, a couple years ago I noticed a prickly pear leaf growing out of the ground behind our rose bushes. We left it alone, and this year it developed several leaves and a couple dozen buds. I worried that they would open while we were gone for the week, but they waited until our return. Over the last few days, we’ve been enjoying the blossoms “volunteering” to add color and beauty to our garden.