Larkspur and delphinium are both beautiful flowering plants that belong to the same family, Ranunculaceae. While they may look similar at first glance, there are several key differences between the two.
1. Life Cycle: One of the main differences between larkspur and delphinium is their life cycle. Larkspur is an annual plant, which means it completes its life cycle within one year. It grows from seed, produces flowers, sets seed, and then dies. On the other hand, delphinium is a perennial plant, meaning it lives for multiple years. It goes through a period of dormancy during winter and regrows each spring.
2. Foliage Texture: Another noticeable difference is the texture of their foliage. Larkspur has finer and more delicate foliage compared to the broader and sturdier leaves of delphinium. The leaves of larkspur are deeply cut and finely divided, giving the plant a lacy appearance. In contrast, delphinium has palmately lobed leaves that are coarser in texture.
3. Growth Habit: Larkspur and delphinium also differ in their growth habits. Larkspur typically grows in a clump-like manner, with multiple stems arising from a central point. It can reach a height of around 2 to 3 feet. Delphinium, on the other hand, grows as tall, upright stalks that can tower over 6 feet in height. The stems of delphinium are strong and sturdy, often requiring staking to support the weight of their tall flower spikes.
4. Flower Structure: While larkspur and delphinium both produce beautiful, showy flowers, there are some differences in their flower structures. Larkspur flowers are arranged in loose, elongated clusters along the stem, with the individual blooms having a spurred shape. The flowers may be single or double, and they come in various colors including blue, purple, pink, and white. Delphinium flowers are densely packed on tall spikes, creating a striking vertical display. Each individual flower has a distinct spur and a central petal called a “bee.” Delphinium flowers also come in a wide range of colors, including blue, purple, pink, white, and even yellow.
5. Hardiness: In terms of hardiness, larkspur is generally more adaptable and tolerant of different climates and growing conditions. It can thrive in both cool and warm climates, whereas delphiniums prefer cooler regions with mild summers. Delphiniums are more susceptible to heat stress and may require extra care and attention in hot climates.
While larkspur and delphinium may share some similarities in appearance, their life cycles, foliage texture, growth habits, flower structures, and hardiness characteristics set them apart. Whether you choose to grow larkspur or delphinium in your garden, both plants can add a touch of beauty and elegance to your landscape.
