Larkspur Delphinium 'Kestrel'
ABOUT
Delphinium 'Kestrel' is admired for its striking appearance, characterized by a captivating display of flowers. The blooms of this plant are organized in tall, dense spikes known as racemes, showcasing a resplendent shade of blue with a hint of purple. Each individual flower within these clusters has a prominent central bee, or eye, in a contrasting shade of white or black, which adds to the visual appeal. The flowers are shaped like little dolphins, which is a characteristic feature of plants in the Delphinium group, and they cover the spikes thoroughly. The foliage of the Delphinium 'Kestrel' is composed of deeply lobed leaves. These leaves have a rich, green color and a somewhat glossy texture, providing a lush backdrop for the luminous floral spires. The leaves form a bushy clump at the base of the plant and along the flowering stems. Overall, the Delphinium 'Kestrel' presents as a regal and elegant plant, with its majestic flower spikes that make it a favorite in gardens for its dramatic and colorful presence.
About this plant
NamesSynonyms
Larkspur, Candle Delphinium
Common names
Delphinium 'Kestrel'.
ToxicityTo humans
Larkspur, including the cultivar 'Kestrel', is highly toxic to humans if ingested. All parts of the plant contain dangerous alkaloids such as delphinine, which can cause severe gastrointestinal distress, muscle weakness, respiratory paralysis, and cardiac complications. Symptoms of larkspur poisoning may include nausea, vomiting, abdominal pain, and diarrhea. Severe cases can lead to muscle paralysis, respiratory failure, and death if not treated promptly. It is crucial to avoid ingesting any part of the larkspur plant and to seek immediate medical attention if ingestion is suspected.
To pets
Larkspur is also toxic to pets, with all parts of the plant containing potent alkaloids that can cause serious harm if ingested. Signs of larkspur poisoning in pets can include drooling, abdominal pain, vomiting, diarrhea, muscle tremors, stiffness, weakness, and potentially seizures. In severe cases, ingestion can lead to respiratory paralysis, cardiac failure, and death. Immediate veterinary care is vital if a pet is suspected of ingesting any part of a larkspur plant.
CharacteristicsLife cycle
Perennials
Foliage type
Deciduous
Color of leaves
Green
Flower color
Blue
Height
3-4 feet (91-122 cm)
Spread
2 feet (60 cm)
Plant type
Herb
Hardiness zones
3-7
Native area
Europe
Benefits
General Benefits- Attracts Pollinators: The Delphinium 'Kestrel' flowers are great at attracting bees and butterflies, which help pollinate other plants in the garden.
- Visual Appeal: With its tall spikes of flowers in vibrant shades of blue, purple, or white, it adds vertical interest and a splash of color to any garden space.
- Garden Design: Due to their height, they work well as background plants in border designs or as a focal point in a cottage garden.
- Seasonal Interest: Blooms in early summer and can be encouraged to flower a second time in the same season if deadheaded properly.
- Companion Planting: Pairs well with other perennials like roses, peonies, and iris, enhancing overall garden aesthetics.
Medical PropertiesThis plant is not used for medical purposes.
Air-purifying QualitiesThis plant is not specifically known for air purifying qualities.
Other Uses- Photography Prop: Delphiniums, with their striking blue flowers, are commonly used as a backdrop or feature in garden photography, enhancing the aesthetic with their height and color.
- Dye Production: The brilliant colors of Delphinium flowers can be used to create natural dyes for fabrics or art projects.
- Garden Architecture: Due to its tall, spiky form, Delphinium 'Kestrel' can be used to provide vertical interest and structure in garden designs.
- Companion Planting: These plants can be used to attract pollinators like bees, butterflies, and hummingbirds to the garden, benefiting other plants nearby.
- Culinary Decoration: While the plant is toxic if ingested, flowers from Delphinium 'Kestrel' can be used as non-edible decorations to embellish cakes and desserts for special occasions.
- Frost Indicator: Delphinium 'Kestrel' can serve as a natural indicator of an early frost, as they are sensitive to cold and may show signs of damage when temperatures drop unexpectedly.
- Floral Arrangements: The stems and flowers can be cut and used in fresh floral arrangements, providing height and a pop of color.
- Theater and Film: Delphinium 'Kestrel' can be used on set for plays and films to create a realistic outdoor garden scene or to signify a specific season or setting.
- Educational Tool: These plants can be used in educational gardens to teach about plant growth habits, pollination, and the importance of biodiversity.
- Symbolic Representation: In certain cultures, Delphiniums represent big-heartedness, fun, lightness, and levity, and they may be used in events to convey these sentiments.
Interesting Facts
Feng ShuiLarkspur is not used in Feng Shui practice.
Zodiac Sign CompitabilityLarkspur is not used in astrology practice.
Plant Symbolism- Openness to new experiences: The Delphinium 'Kestrel', known commonly as Larkspur, traditionally symbolizes a willingness to embrace new opportunities and challenges.
- Protection: Larkspur is thought to ward off negative energies and is often associated with protection from dangers.
- Lightness and levity: The airy structure and height of the Larkspur evoke a sense of lightness, reminding us not to take life too seriously.
- Affection: In flower language, Larkspur can represent an open heart and attachment to someone.
- Ardent attachment: The intensity of the Larkspur's colors often represents deep feelings and a strong sense of connection.
WaterLarkspur requires regular watering, especially during dry spells. It's best to water deeply once a week, providing the equivalent of 1 gallon of water per plant. This encourages deep root growth. Avoid overhead watering to prevent diseases; instead, use a soaker hose or water at the base of the plant. During hot or windy weather, you might need to water twice a week, always checking the soil moisture before doing so.
LightLarkspur thrives in full sun, meaning it needs a minimum of 6 hours of direct sunlight per day. The best spot for it would be in an area that receives unobstructed sunlight throughout the morning and into the afternoon. Adequate sunlight is essential for robust growth and the best flower production.
TemperatureLarkspur prefer cooler climates and can typically handle temperatures down to 40 degrees Fahrenheit without damage. The ideal growing temperature for Larkspur is between 50 and 75 degrees Fahrenheit. They can survive up to about 90 degrees Fahrenheit, but prolonged heat can be detrimental, especially if night temperatures remain high.
PruningLarkspur benefit from pruning to encourage branching and a second flush of flowers. After the initial flowering, cut back the flower stalks by one-third to one-half. This may prompt a second round of blooms. The best time to prune is immediately after the first blooms begin to fade and the plant starts to look leggy.
CleaningAs needed
SoilLarkspur 'Kestrel' flourishes in well-draining, fertile loam with a neutral to slightly alkaline pH between 6.5 and 7.5. A mix of garden soil, compost, and a handful of lime to raise pH can serve as an ideal soil composition for healthy growth.
RepottingLarkspur plants generally do not require frequent repotting; repotting should be done only when necessary, roughly every 2-3 years, or when the plant outgrows its current container.
Humidity & MistingLarkspurs, including the 'Kestrel' variety, prefer moderate humidity levels; avoid excessive humidity to prevent fungal diseases.
Suitable locationsIndoor
Provide bright light, well-draining soil, and good air flow indoors.
Outdoor
Plant in full sun, in well-drained soil, after frost danger.
Hardiness zone
3-7 USDA
Life cycleThe Delphinium 'Kestrel', commonly known as Larkspur, begins its life cycle with seed germination, usually in early spring when soil temperatures reach a consistent 55-65°F (13-18°C) and the threat of frost has passed. Seedlings emerge with a pair of initial leaves before developing true leaves and establishing a small rosette. As the plant matures, it develops a sturdy stem and multiple side shoots, which lead to the formation of distinctive tall spires with clusters of colorful, showy flowers, typically in late spring to early summer. Following pollination by bees and other insects attracted by the nectar-rich blooms, the flowers develop into small seed capsules that release seeds once mature, completing the reproductive phase. In the right conditions, Larkspur can act as a perennial, dying back to the crown in late fall after the first frost and re-emerging from the same root system the following spring. However, in colder climates or less ideal conditions, it may be grown as an annual, completing its life cycle within one growing season from seed to seed production.
PropogationPropogation time
Spring-Early Summer
The most popular method of propagating Delphinium 'Kestrel', which is a type of larkspur, is by seed. This is typically done in late winter to early spring. Seeds should be sown in well-draining soil at a shallow depth, as they require light for germination. A thin layer of soil covering the seeds is sufficient. Maintain a soil temperature between 65-75°F (18-24°C) for optimal germination, which usually occurs within 2 to 3 weeks. Seedlings can be transplanted to individual pots once they have a set of true leaves and can be moved outdoors after the risk of frost has passed.
