Twolobe larkspur (Delphinium nuttallianum)

Also known as: Sonne's larkspur, Low larkspur, Delphinium, Plains larkspur

Monkshood (Aconitum) is a perennial flowering plant that is highly toxic to humans and can be fatal if ingested. It features deep blue to blue-violet blooms that attract hummingbirds.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Twolobe larkspur

Lifespan

Perennial

Plant Type

Herb

Plant Height

10 cm to 51 cm

Spread

15 cm to 30 cm

Leaf Color

Green Yellow

Flower Size

1 to 2 inches

Flower Color

Blue White Purple Lavender

Images of Twolobe larkspur

Quickly Identify Twolobe larkspur

Look for tall, slender stems with deeply lobed leaves and striking, spurred flowers that are typically blue or purple. The plants usually grow in open, sunny areas of mountainous regions.

Scientific Classification of Twolobe larkspur

Phylum

Vascular plants

Class

Dicotyledons

Order

Ranunculales

Family

Buttercup

Genus

Larkspurs

Species

Twolobe larkspur

Planting and Growing of Twolobe larkspur

Care Difficulty

Hard

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

4-8 hours

Ideal Temperature

60-70℉

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 Twolobe larkspur?

The amount of water needed for Delphinium nuttallianum should ensure the soil is consistently moist but not waterlogged. Aim to water with approximately 250 ml each time, making sure that the water seeps through the soil and reaches the roots effectively.

What are the symptoms of an underwatered Twolobe larkspur? ›

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

What are the symptoms of an overwatered Twolobe larkspur? ›

How to save an overwatered Twolobe larkspur? ›

What Are the Sunlight Requirements for Twolobe larkspur?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 4 to 6 hours

Delphinium nuttallianum thrives best in full sun to partial sun, making it crucial for your garden planning. Adequate sunlight encourages prolific flowering and sturdy stems, filling your landscape with vibrant, long-lasting blooms.

What are the best light conditions for Delphinium nuttallianum? ›

How can I ensure Delphinium nuttallianum receives ideal light? ›

What benefits does Delphinium nuttallianum gain from ideal light conditions? ›

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What Is the Ideal Temperature Range for Twolobe larkspur?

Ideal Temperature: 60 ~ 70℉

For optimal growth, Delphinium nuttallianum thrives in temperatures ranging from 60°F to 70°F. This temperature range supports photosynthesis and healthy metabolic processes, ensuring vibrant blooms and robust plant health.

What Soil is Best for Twolobe larkspur?

Soil type: Sandy loam, Loam

Soil PH: 6.5 ~ 7.5

Delphinium nuttallianum thrives in well-drained soils that prevent waterlogging, which can lead to root rot. A sandy loam soil ensures adequate drainage while retaining enough moisture for healthy plant growth. Rich organic matter enhances nutrient availability essential for robust growth and vivid blooms. Incorporating compost or well-rotted manure into the soil can significantly boost plant health and flowering. Consistent moisture levels are crucial, but overly wet conditions should be avoided. Maintaining moderate moisture helps sustain the plant during dry spells without compromising root health.

How to Fertilize Twolobe larkspur?

Fertilizer type: Balanced

For Delphinium nuttallianum, a balanced fertilizer is essential. When using liquid fertilizer, mix it at half strength to avoid overwhelming the plant roots. Apply it evenly until the soil is moist but not waterlogged. For solid fertilizers, consider using a 14-14-14 NPK slow-release formula and apply sparingly around the base of the plant, ensuring not to touch the stem directly.

How to Prune Twolobe larkspur?

Pruning Time: Spring, Summer

Begin by removing dead or spent stems down to the base. This not only clears out unsightly foliage but also encourages new growth. Aim for a clean cut close to the crown of the plant. To prolong blooming, regularly pinch off spent blooms. This practice, known as deadheading, redirects the plant's energy towards producing new flowers rather than seed formation. For a well-shaped Delphinium, cut back any overgrown stems that disrupt the plant's natural symmetry. Prune just above a leaf node to encourage a bushier appearance. More About Pruning Techniques→

How to Propagate Twolobe larkspur plant?

Propagate Time: Early spring, Spring, Early summer

After the flowering period, Delphinium seeds can be collected. Allow seed pods to dry on the plant before collecting to ensure full maturity. Be sure to store seeds in a cool, dry place until planting.

Select healthy stems for cuttings. Using pruning shears, cut a non-flowering stem just below a node. Strip the lower leaves, leaving a few on top to sustain the cutting during root development.

Whether planting seeds or cuttings, ensure the soil is well-draining and rich in organic matter. Water gently to keep the soil moist but not soggy, which supports germination and root growth.

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How to Repot Twolobe larkspur plant?

Repotting frequency: Every 2-3 years

The ideal time to repot Delphinium nuttallianum is indicated by overgrown roots emerging from the drainage holes, or if the plant's growth seems stunted. Observing such signs indicates the plant needs more room to flourish.

Select a pot that is 1-2 inches larger in diameter than the current pot, allowing for additional root growth. A slightly larger pot provides stability and better moisture retention, promoting healthy plant development.

Opt for well-draining, loamy soil enriched with organic matter to ensure proper drainage while retaining adequate nutrients. This type of soil prevents root rot and encourages robust plant health.

Toxicity of Twolobe larkspur

Is Twolobe larkspur toxic to humans?

All components of the twolobe larkspur are highly toxic upon consumption due to the presence of perilous alkaloids. Indeed, consuming twolobe larkspur can lead to fatal outcomes. Although this plant possesses its highest toxicity in its younger stages, it is advisable to avoid ingestion at any age or under any circumstances. Nonetheless, twolobe larkspur can be safely handled and cultivated. Symptoms arising from twolobe larkspur poisoning encompass burning sensations in the lips and mouth, throat numbness, vomiting, diarrhea, muscular weakness and spasms, a weak pulse, respiratory decline, and convulsions.

Is Twolobe larkspur toxic to cat?

Twolobe larkspur presents a moderate toxicity risk to cats and is hazardous if consumed. Every part of this plant is detrimental, making it vital for cat owners to rigorously restrict access to it. Cats that come into contact with twolobe larkspur may endure physical discomfort, illness, or pain that signals potential poisoning; the specific symptoms can differ based on the quantity ingested and the individual cat's reactions to the toxin. In cases where poisoning is suspected, it is crucial to act swiftly and take the cat to a veterinary clinic for accurate diagnosis and treatment to alleviate the dangers related to the toxicity of twolobe larkspur.

Is Twolobe larkspur toxic to dog?

Twolobe larkspur presents a moderate toxicity threat to dogs. This plant can poison canines if any portion is consumed, as all its parts are harmful. Following ingestion, dogs may show signs such as gastrointestinal distress, muscular tremors, or heart-related problems. It is essential for dog owners to restrict their pets from areas where twolobe larkspur grows and to keep a vigilant eye on them in settings where this plant exists. If a dog does consume twolobe larkspur, it is vital to obtain immediate veterinary assistance to secure the best possible outcome for the affected 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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