Dwarf larkspur (Delphinium tricorne)

Also known as: Spring Larkspur

Dwarf larkspur (Delphinium tricorne) typically grows in its natural habitat within the eastern United States, flourishing in rich woodlands, open woods, and areas near streams. Its striking purple blooms are known to attract butterflies and hummingbirds, making it popular for ornamental gardening. The name "tricorne" is derived from the plant's three-horned seed pods.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Dwarf larkspur

Lifespan

Perennial

Plant Type

Herb

Plant Height

20 cm to 60 cm

Spread

30 cm to 45 cm

Leaf Color

Green Silver

Flower Size

2.5 cm

Flower Color

Purple Blue

Images of Dwarf larkspur

Quickly Identify Dwarf larkspur

Slender stems up to 18 inches (45 cm) tall

Distinctive horn-like pods split in August-October for seed dispersal

Palmately divided leaves with hairy texture and deep lobes

Erect stem with fleshy, succulent texture and minimal branching

Trumpet-shaped flowers with blue to purple sepals and unique spur

Scientific Classification of Dwarf larkspur

Phylum

Vascular plants

Class

Dicotyledons

Order

Ranunculales

Family

Buttercup

Genus

Larkspurs

Species

Dwarf larkspur

Planting and Growing of Dwarf larkspur

Care Difficulty

Easy

Watering Schedule

Every 2 days

Sunlight Requirements

Partial sun

Sunshine Duration

6-10 hours

Ideal Temperature

60-75℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Ceramic, Plastic

How to Water Dwarf larkspur?

For Delphinium tricorne, watering should ensure the soil remains evenly moist but not waterlogged. Aim to water thoroughly, allowing the water to reach the root zone without leaving standing water. Watering should mimic natural rainfall patterns where possible, adjusting with the seasons.

What are the symptoms of an underwatered Dwarf larkspur? ›

What should I do if my Dwarf larkspur is not getting enough water? ›

What are the symptoms of an overwatered Dwarf larkspur? ›

How to save an overwatered Dwarf larkspur? ›

What Are the Sunlight Requirements for Dwarf larkspur?

Sunlight Requirements: Partial sun, Full sun

Duration of light: 4-8 hours a day

Partial sun exposure helps maintain lush growth and vibrant blooms for Delphinium tricorne by balancing energy capture and heat stress reduction.

How much sunlight does Delphinium tricorne need? ›

What is the best location for Delphinium tricorne? ›

How to adjust light for Delphinium tricorne indoors? ›

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What Is the Ideal Temperature Range for Dwarf larkspur?

Ideal Temperature: 60 ~ 75℉

The ideal temperature range for Delphinium tricorne is between 60°F and 75°F. These conditions promote optimal growth and flowering, providing an environment where the plant can absorb nutrients efficiently without undergoing stress. Consistent temperatures within this range allow the plant to maintain its metabolic functions, enhancing its overall health and vibrancy.

What Soil is Best for Dwarf larkspur?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Delphinium tricorne thrives in well-draining soil, as this prevents water from stagnating around the roots, reducing the risk of root rot and other fungal diseases. Proper drainage ensures the plant's roots receive adequate oxygen, promoting healthier growth. Rich, fertile soil packed with organic matter supports the rapid growth of Delphinium tricorne. Incorporating compost or well-rotted manure enhances the soil's fertility, providing essential nutrients, which lead to vibrant blooms and robust foliage. While good drainage is essential, retaining adequate moisture is crucial for Delphinium tricorne's development. Loam and sandy loam soils strike the perfect balance, holding sufficient moisture without becoming waterlogged, thus supporting sustained hydration for the plant.

How to Fertilize Dwarf larkspur?

Fertilizer type: Balanced

For Delphinium tricorne, the recommended amount of fertilizer should be moderate, particularly when using liquid fertilizers. Apply about half the recommended strength of a general-purpose liquid fertilizer every two weeks during the growing season to avoid nutrient overload and encourage healthy growth.

How to Prune Dwarf larkspur?

Pruning Time: Spring, Summer

To encourage continuous blooming, regularly remove spent flowers by cutting them back to the nearest set of healthy leaves. This will redirect the plant's energy into new blooms and maintain its aesthetic appearance throughout the growing season. Inspect the plant for any damaged or broken stems. Use clean, sharp scissors or pruning shears to carefully trim these damaged parts, making cuts just above a healthy bud or leaf node to facilitate new growth. Removing damaged stalks promotes overall plant vitality. After the main blooming period, trim the Delphinium tricorne to maintain a pleasing shape. Follow the natural contour of the plant, trimming back any excessive growth to keep the plant well-proportioned. Regular shaping helps enhance the visual impact in your garden. More About Pruning Techniques→

How to Propagate Dwarf larkspur plant?

Propagate Time: Spring, Late spring

Collect seeds from mature plants in late summer. Allow seed heads to dry on the plants before cutting them off. Ensure seeds are fully ripe for optimal germination rates.

Select a healthy parent plant and take cuttings from non-flowering shoots in spring. This ensures that the plant's energy is directed toward root development rather than flowering.

Dig up the plant carefully in spring, and cut sections of root about 5cm long. Ensure each segment has healthy growth nodes to promote new shoots and roots.

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How to Repot Dwarf larkspur plant?

Repotting frequency: Every 2-3 years

Delphinium tricorne should be repotted when roots start growing out of the drainage holes or the plant’s growth noticeably slows down. These signals indicate that the plant is becoming root-bound and requires fresh soil and more space to thrive.

Select a pot that is 2-3 inches larger in diameter than the current one to allow for root expansion. Ensure the pot has adequate drainage holes to prevent waterlogging, which is crucial for maintaining the health and vigor of your Delphinium tricorne.

Opt for well-drained loamy soil enriched with organic matter. This type of soil retains sufficient moisture while providing the excellent drainage that Delphinium tricorne needs. Good soil structure also enhances root aeration, promoting healthy growth.

Toxicity of Dwarf larkspur

Is Dwarf larkspur toxic to humans?

The dwarf larkspur poses a risk of poisoning in humans when ingested and can also lead to skin irritation upon contact with the plant itself. Every component of the plant is deemed toxic, yet the seeds and tender leaves harbor the highest levels of toxins identified as diterpenoid alkaloids. Older specimens exhibit reduced toxicity, and the overall poisonous nature may vary with seasonal fluctuations and soil conditions. The symptoms of poisoning can range from severe to potentially fatal in the most extreme instances. If consumed, the dwarf larkspur can result in burning sensations in the lips and mouth, numbness in the throat, severe gastrointestinal distress (including vomiting, diarrhea, and colic), muscle weakness and spasms, a slowed heart rate, lethargy, and convulsions. Without appropriate medical attention, this type of poisoning can lead to cardiac and respiratory system failures.

Is Dwarf larkspur toxic to cat?

Dwarf larkspur presents a significant toxicity risk to cats. If a cat comes into contact with or consumes any part of this plant, it could result in severe health issues, as the entire organism harbors toxic compounds. In particular, dwarf larkspur contains diterpene alkaloids, recognized for their hazardous nature. A cat that has ingested this plant may display symptoms such as distress, illness, or pain, which reflect the plant's considerable toxicity. Cat owners need to remain attentive and keep their pets away from dwarf larkspur. Should exposure be suspected, it is essential to seek prompt veterinary assistance to ensure the best possible outcome for the affected cat.

Is Dwarf larkspur toxic to dog?

The plant species known as dwarf larkspur presents a significant toxicity hazard for dogs. Canines can suffer poisoning from this plant via skin contact or unintentional ingestion. Upon exposure to dwarf larkspur, dogs may display symptoms including gastrointestinal distress, muscular weakness, and potentially critical cardiac issues. The entire plant is toxic, as it harbors dangerous compounds that can lead to serious health problems in dogs. If you suspect that your dog has come into contact with or consumed dwarf larkspur, it is crucial to seek prompt veterinary assistance to ensure the best possible health outcome for your pet.

WARNING

The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.

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