Paeonia tenuifolia is a perennial flower that is better known as the fern leaf peony. This variety of peony has a crimson color to it that is similar to what you'd see with heirloom red roses. It is a plant that will typically be one to two feet tall early in the growing season. Paeonia tenuifolia blooms earlier than other varieties of peonies and can flower all summer, into autumn, but will sometimes go dormant in mid-summer. Paeonia tenuifolia can be grown in zones 4 through 7 and will begin blooming in June. Flower Paeonia tenuifolia in Prague botanic garden, Czech Republic - Karelj [Public domain], via Wikimedia Commons Paeonia tenuifolia is the perfect ornamental flower Paeonia tenuifolia has a few flowers that are excellent for growing as a companion. These flowers include similarly intense colored rose varieties and colors (per your choice), Jackman's Clematis, Carnations, and Chrysanthemums. Even other Paeonia tenuifolia, such as the pink shades of Rose...