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Consolida ajacis

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Plant Profile

Flowering Months:
Ranunculaceae (Buttercup)
Life Cycle:
Annual or Perennial
Maximum Size:
150 centimetres tall
Fields, gardens, parks, wasteland.

Variable in colour, 5 petals
Flowers are blue, pink or white.
The fruit is known as a follicle. A follicle is a type of fruit which splits open on one side to release its seeds.
An annual garden escape species with feathery leaves.
Other Names:
Doubtful Knight's Spur, Giant Larkspur, Rocket Larkspur.
Frequency (UK):
Occasionally seen  

Similar Species

Other Information


Consolida ajacis, also known as larkspur or rocket larkspur, is a species of flowering plant in the Ranunculaceae family. It is native to Europe and Asia, but it is widely cultivated as an ornamental plant in many other parts of the world. The plant has tall, slender stems that can reach up to 1.5 meters (5 feet) in height, and it produces spikes of blue, purple, pink, or white flowers that bloom in late spring or early summer. The leaves are fern-like, feathery and deeply lobed. The plant is toxic if ingested, and it can cause skin irritation. The plant has been cultivated for centuries and was used as a source of blue dye and as a medicinal plant. Nowadays it is mostly used as an ornamental plant in gardens and flower arrangements.


Larkspur, also known as Consolida ajacis, is a beautiful flowering plant that belongs to the family Ranunculaceae. This annual plant is native to Europe, North Africa, and Asia and is known for its attractive, spiky flower spikes that come in a range of colors, including blue, pink, purple, and white.

Larkspur is a popular ornamental plant that is commonly grown in gardens and used in floral arrangements due to its long-lasting blooms and striking appearance. In addition, it is easy to grow and care for, making it an ideal choice for beginner gardeners.

Growing Larkspur

Larkspur grows best in full sun and well-drained soil. It prefers cool temperatures and can be sown directly in the ground in early spring or late fall. Larkspur seeds should be planted about 1/4 inch deep and spaced 6-8 inches apart. They should be watered regularly until they germinate, which usually takes around 7-14 days.

Once the plants have emerged, they should be thinned to about 12 inches apart to ensure that they have enough space to grow. Larkspur should be watered regularly but should not be overwatered, as this can lead to root rot. In addition, the plants should be fertilized every 4-6 weeks with a balanced fertilizer to promote healthy growth and blooming.

Harvesting Larkspur

Larkspur blooms in early summer and can continue blooming until fall if deadheaded regularly. The flowers should be harvested when they are fully open and the petals are just starting to fall. They should be cut at an angle with a sharp pair of scissors and placed immediately in a vase of water.

Larkspur flowers can last up to 10 days in a vase if they are kept in a cool, shady location and the water is changed daily.

Uses for Larkspur

Larkspur is primarily used for ornamental purposes, but it also has some medicinal properties. The plant contains alkaloids that have been used in traditional medicine to treat a range of ailments, including digestive issues, fever, and respiratory problems.

However, it is important to note that larkspur is toxic if ingested and should not be consumed under any circumstances. In addition, the sap from the plant can cause skin irritation in some people, so it is important to handle it with care.

Larkspur is a beautiful and easy-to-grow plant that is a great addition to any garden or floral arrangement. With its striking appearance and long-lasting blooms, it is sure to brighten up any space.

More Information

Larkspur is a versatile plant that can be used in a variety of ways. Here are some additional uses and interesting facts about Larkspur:
  1. Larkspur is often used in traditional wedding bouquets and floral arrangements, as its long-lasting blooms symbolize an enduring love and devotion.

  2. Larkspur is also commonly used in cottage gardens and wildflower meadows, as it attracts a variety of beneficial insects, such as butterflies and bees.

  3. In addition to its ornamental uses, Larkspur has been used in traditional medicine for centuries. The plant contains alkaloids that have been used to treat a range of ailments, including heart palpitations, rheumatism, and insomnia.

  4. Despite its medicinal properties, Larkspur is toxic if ingested and can cause severe poisoning in humans and animals. Ingesting even a small amount of the plant can cause symptoms such as nausea, vomiting, and diarrhea, and in severe cases, it can lead to respiratory failure and death.

  5. Larkspur is an important plant in the language of flowers, where it symbolizes an open heart, lightness, and levity. It is also associated with the month of July and the zodiac sign of Cancer.

  6. Larkspur is a popular cut flower that is often used in floral arrangements and wedding bouquets. Its long-lasting blooms and wide range of colors make it a versatile and attractive choice for many occasions.

  7. Larkspur is a relatively low-maintenance plant that requires minimal care and attention. It is resistant to most pests and diseases and can thrive in a variety of soil types and growing conditions.

In conclusion, Larkspur is a beautiful and versatile plant that can be used in a variety of ways. From its ornamental uses in gardens and floral arrangements to its traditional medicinal properties, Larkspur has a long and fascinating history that continues to captivate and inspire people today.

Facts about Larkspur

Here are some additional interesting facts about Larkspur:

  1. Larkspur gets its name from the shape of its flowers, which resemble the claw of a bird. The Latin name Consolida ajacis is derived from the Greek word 'akastos', which means 'unmarried'.

  2. Larkspur is a self-seeding plant, which means that it will drop its own seeds and grow new plants in the following season without any human intervention.

  3. The flowers of Larkspur are often used in aromatherapy and perfumery, as they have a sweet, floral scent that is reminiscent of lilies and hyacinths.

  4. In some cultures, Larkspur is considered a sacred plant and is used in religious ceremonies and rituals. In Hinduism, for example, Larkspur is associated with the goddess Lakshmi and is used in offerings and prayers.

  5. Larkspur is sometimes confused with delphiniums, which are also members of the Ranunculaceae family and have similar flowers. However, Larkspur is an annual plant, while delphiniums are perennials.

  6. In ancient times, Larkspur was used as a natural dye for textiles, and its flowers were used to create blue and purple pigments.

  7. Larkspur is a popular plant for pollinator gardens, as its nectar-rich flowers attract a variety of bees, butterflies, and hummingbirds.

In conclusion, Larkspur is a fascinating and versatile plant that has a long and rich history. Whether you are looking to add some color to your garden or create a beautiful floral arrangement, Larkspur is sure to delight and inspire you with its stunning beauty and intriguing characteristics.

Blog continued...

Larkspur is a native of Europe and western Asia, but it has been widely naturalized throughout the world, including in North America, where it is considered an invasive species in some areas. It grows best in well-draining soil and full to partial sun, and it can tolerate a range of temperatures and climates. Larkspur is a popular garden plant for its bright and colorful blooms, which can range in color from blue and purple to pink, white, and red.

Larkspur is also known for its tall and graceful growth habit, which can reach heights of up to six feet or more. The plant produces long, slender stems that are covered in delicate foliage and topped with tall spikes of flowers. These spikes can contain dozens of individual blooms and can create a striking visual display in the garden or in a vase.

One of the unique features of Larkspur is its ability to self-seed and spread throughout a garden or meadow. The plant drops its seeds as the flowers fade, and these seeds can germinate and grow into new plants in the following season. This self-seeding habit can make Larkspur a low-maintenance and cost-effective plant for gardeners who want to create a naturalistic and wildflower-inspired landscape.

Despite its beauty and ornamental value, Larkspur is a highly toxic plant that should be handled with care. All parts of the plant contain alkaloids that can cause severe poisoning if ingested, and even small amounts of the plant can be lethal to humans and animals. Gardeners should wear gloves and long sleeves when handling Larkspur, and they should take care to keep children and pets away from the plant.

In conclusion, Larkspur is a stunning and versatile plant that has a long and fascinating history. Whether you are looking to add color to your garden or create a striking floral arrangement, Larkspur is sure to impress with its beauty and unique characteristics. However, it is important to remember that Larkspur is a toxic plant and should be handled with care to avoid any health risks.

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