Larkspur Delphinium 'Constance Rivett'
ABOUT
Delphinium 'Constance Rivett' is a strikingly beautiful garden flower known for its majestic spires of blooms that come in captivating shades of blue. This particular cultivar showcases a rich and vibrant blue hue that is highly sought after by garden enthusiasts. The individual flowers are densely packed along the tall flower spikes, each bloom shaped like a tiny cup or bell with a slightly ruffled edge, adding texture and depth to the overall appearance of the plant. The center of each flower, often called the "bee," stands out with a contrasting white or lighter blue tone, creating an eye-catching effect that can be seen from a distance. This central feature gives the flowers a unique look, almost as if they each have a tiny eye looking back at the observer. The foliage of the plant is lush and deeply cut, with a medium green color that serves as a perfect backdrop, highlighting the vibrant blues of the flowers. Delphinium 'Constance Rivett' flowers are typically set against a backdrop of tall, sturdy stems that support the heavy blooms. The stems may have a slight fuzz to them, and are strong enough to hold the spikes upright against the elements. Amid the flowering spikes, the leaves are arranged in a manner that provides visual interest even when the plant is not in bloom, with their intricate cuts and pointed lobes. Overall, the Delphinium 'Constance Rivett' presents a classic and romantic garden aesthetic, with its impressive flower spikes and lovely blue tones that can easily become the focal point of any garden display. The contrast of the delicate-looking flowers with the robustness of the plant itself makes it a favorite among those who appreciate traditional garden beauty.
About this plant
NamesFamily
Ranunculaceae.
Synonyms
Larkspur, Candle Larkspur, Elatum Larkspur.
Common names
Delphinium 'Constance Rivett'.
ToxicityTo humans
Larkspur, including the 'Constance Rivett' variety, is highly toxic to humans. All parts of the plant contain toxic alkaloids, such as methyllycaconitine, which can pose serious risks when ingested. Symptoms of larkspur poisoning may include nausea, vomiting, abdominal pain, muscle weakness, and paralysis. Severe cases can lead to respiratory failure and death. It is critical to seek immediate medical attention if ingestion is suspected.
To pets
Larkspur is also highly toxic to pets, including dogs, cats, and horses. The plant contains dangerous alkaloids that can affect the nervous system, leading to symptoms such as drooling, muscle tremors, weakness, and potentially fatal respiratory paralysis if ingested. The toxicity is serious and can rapidly affect a pet’s health, so urgent veterinary care is necessary in the event of larkspur ingestion.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Blue
Height
6 feet (1.83 meters)
Spread
2 feet (0.61 meters)
Plant type
Herb
Hardiness zones
3
Native area
Europe
Benefits
General Benefits- Aesthetic Appeal: The Delphinium 'Constance Rivett' is known for its striking blue flowers that add color and beauty to any garden setting.
- Height Interest: With its tall spikes, it brings vertical interest to the landscape, which can be used to create depth and structure in garden design.
- Pollinator Attraction: It attracts a variety of pollinators such as bees and butterflies, supporting biodiversity and aiding in the pollination of other plants.
- Cottage Garden Style: It's a classic choice for a cottage garden, fitting in with a relaxed and naturalistic planting scheme.
- Cut Flowers: The blooms make excellent cut flowers, with their long stems and vibrant colors adding beauty to floral arrangements.
- Seasonal Interest: Provides seasonal blooms in the late spring to early summer, creating a dynamic change in the garden throughout the year.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Dye Production: The tall larkspur can be used to create natural dyes for fabrics, with different plant parts yielding varying shades of color.
- Educational Tool: Biology and horticulture teachers may use tall larkspur to illustrate plant growth, pollination, and lifecycle to students.
- Garden Design: Tall larkspur, with its height and vibrant colors, is excellent for adding vertical interest and color gradients to ornamental gardens.
- Companion Planting: Larkspurs can be planted alongside vegetables in gardens to attract pollinators and potentially deter certain pests.
- Photography Subject: Due to their striking appearance, tall larkspurs are a popular subject for photographers and artists, especially in macro photography.
- Eco-Printing: Leaves and flowers of the tall larkspur can be utilized in eco-printing, a method of creating patterns on fabric using natural plant materials.
- Floral Arrangements: Fresh or dried, the tall larkspur adds height and drama to bouquets and floral displays for events and home decor.
- Folk Art Material: Dried stems and flowers can be used in folk art and crafts, such as wreath making and potpourri mixes.
- Seed Harvesting: Enthusiasts of the tall larkspur may harvest its seeds to share or trade with other gardeners, to cultivate plant diversity.
- Theatrical Props: The dramatic stalks of tall larkspur can be used in theatrical productions and set designs to create naturalistic environments.
Interesting Facts
Feng ShuiThe Delphinium is not used in Feng Shui practice.
Zodiac Sign CompitabilityThe Delphinium is not used in astrology practice.
Plant Symbolism- Openness to New Experiences: Delphiniums, commonly known as Larkspur, often signify an openness to new experiences and opportunities, representing a positive attitude towards the future.
- Protection: In some traditions, Larkspur is thought to ward off negative spirits and energies, offering a protective charm.
- Lightness and Levity: The airy and delicate appearance of Larkspur blooms are often associated with a sense of lightness and an uplifting of spirits.
- Big-Heartedness: Larkspur is symbolic of a generous spirit and a feeling of goodwill to others.
- Ardent Attachment: This flower is often given as a symbol of strong bonds of love, indicating an ardent attachment.
- July Birth Flower: As the birth flower for the month of July, Larkspur signifies the joy and light-heartedness that the heart of summer brings.
WaterLarkspur requires regular watering, especially during dry spells. It’s essential to keep the soil consistently moist but not waterlogged. Typically, watering about 1 inch per week is sufficient, but this could vary depending on climate conditions and soil type. During particularly hot and dry periods, increase watering to twice per week. Be sure to water at the base of the plant to avoid wetting the foliage, as this can increase the risk of fungal diseases. Adjust the watering schedule according to rainfall, ensuring that the plant receives enough moisture but also has time to dry out slightly between watering sessions.
LightLarkspurs thrive in locations with full sun to partial shade. They perform best with at least 6 to 8 hours of sunlight daily. Choose a spot in the garden that receives plenty of morning sunlight, which is less intense, and some afternoon shade to protect the plants from the harsh midday sun, especially in hotter climates.
TemperatureLarkspur prefers moderate temperatures and can generally tolerate a temperature range from about 40 to 75 degrees Fahrenheit. They can survive briefly in temperatures down to 20 degrees Fahrenheit but should be protected from hard freezes. The ideal growing temperature for larkspur is within the 55 to 65 degrees Fahrenheit range, where they can grow robustly and produce vibrant blooms.
PruningPruning larkspurs promotes a tidier appearance and can encourage a second bloom. Deadhead spent flowers regularly to maintain vigor and possibly stimulate another flush of blooms later in the season. Cut back the stalks to ground level once the plant finishes blooming and starts to die back, typically in late summer or fall. This also helps to prevent self-seeding if not desired.
CleaningAs needed
SoilLarkspurs thrive best in a mix with good drainage, such as equal parts loam, compost, and coarse sand. They prefer a soil pH between 6.0 and 7.5.
RepottingLarkspurs typically don't need frequent repotting and do best if left undisturbed; they may be repotted every 2-3 years or as needed.
Humidity & MistingLarkspurs prefer moderate humidity levels but are quite adaptable to the humidity conditions common in temperate regions.
Suitable locationsIndoor
Ensure full sun, cool temps, and well-draining soil.
Outdoor
Plant in full sun, in well-draining soil; protect from strong winds.
Hardiness zone
3-7 USDA
Life cycleThe Delphinium 'Constance Rivett', also known as Larkspur, begins its life cycle as seeds that germinate in early spring when the temperatures are cool. Upon germination, the seedlings develop a set of true leaves and gradually form a rosette at the base, which will support future growth. As the plant matures, it develops a tall flowering stalk, which may need staking due to its height. The Larkspur blooms in early to mid-summer, displaying its characteristic spikes of blue or violet flowers, and attracts a variety of pollinators. After flowering and pollination, the plant produces fruit containing small seeds, which can be dispersed by wind or water. As a perennial, it may die back to the ground after flowering, but the root system remains alive to regenerate new growth the following spring.
PropogationPropogation time
Spring to Summer
The Delphinium 'Constance Rivett', commonly known as a cultivar of delphinium or larkspur, is often propagated via seed sowing. For this plant, the best time to sow seeds is in late winter to early spring. Seeds should be gently pressed into the soil surface of a seed starting mix and kept uniformly moist. Ensure that the seeds receive ample light, as this aids in germination. Once seedlings have developed their first set of true leaves and are sturdy enough, they can be transplanted into individual pots or directly into the garden after the last frost. The delicate nature of delphinium roots makes careful handling imperative during transplanting to prevent damage.
