Sonne's arnica (Arnica parryi)

Also known as: Parry's arnica, Parry's leopardbane

Arnica parryi is a perennial herb with rhizomes, typically featuring a single, unbranched stem that grows to heights ranging from 10 to 60 centimeters. The plant has oval leaves at the base and longer, narrower leaves with petioles higher up. On larger plants, these leaves can reach up to 20 centimeters in length.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Sonne's arnica

Lifespan

Perennial

Plant Type

Herb

Plant Height

30 cm to 51 cm

Spread

Approximately 20-30 cm

Leaf Color

Green

Flower Size

5-7 cm

Flower Color

Bright yellow

Images of Sonne's arnica

Quickly Identify Sonne's arnica

To identify Arnica parryi, look for its bright yellow daisy-like flowers with a central disk and radiating petals. The leaves are typically lance-shaped and borne on a single, erect stem.

Scientific Classification of Sonne's arnica

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Mountain tobaccos

Species

Sonne's arnica

Planting and Growing of Sonne's arnica

Care Difficulty

Hard

Watering Schedule

Every 2 days

Sunlight Requirements

Partial sun

Sunshine Duration

6-12 hours

Ideal Temperature

65-75℉

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

Terracotta, Plastic

How to Water Sonne's arnica?

For Arnica parryi, a good rule of thumb is to water with approximately 150 milliliters per session. This plant prefers a moist but not waterlogged soil. Ensure the water penetrates the soil deeply without leaving standing water, which aids in maintaining proper root health.

What are the symptoms of an underwatered Sonne's arnica? ›

What should I do if my Sonne's arnica is not getting enough water? ›

What are the symptoms of an overwatered Sonne's arnica? ›

How to save an overwatered Sonne's arnica? ›

What Are the Sunlight Requirements for Sonne's arnica?

Sunlight Requirements: Partial sun

Duration of light: 3-6 hours daily

Arnica parryi prefers partial sun conditions, benefiting from three to six hours of sunlight daily. Ideal light exposure ensures its photosynthesis process is supported, promoting healthy growth and vibrant blooms.

How much direct sun does Arnica parryi prefer? ›

What environments provide ideal lighting for Arnica parryi? ›

How does ideal lighting affect the growth of Arnica parryi? ›

What Is the Ideal Temperature Range for Sonne's arnica?

Ideal Temperature: 65 ~ 75℉

Arnica parryi thrives best in a temperature range of 65°F to 75°F. This range provides optimal growing conditions by balancing the metabolic activities and photosynthesis processes, ensuring healthy growth and vibrant blooms.

What Soil is Best for Sonne's arnica?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Arnica parryi thrives in well-drained soil that mimics its natural mountainous habitat, preventing root rot. Ensuring good drainage helps maintain ideal plant health and growth. Rich in organic matter, the soil provides essential nutrients to Arnica parryi, promoting vigorous growth and vibrant flowers. Nutrient-rich conditions are crucial for optimal development. Avoiding excessively fertile soil prevents overgrowth, ensuring balanced plant development. Moderately fertile conditions maintain the plant's natural growth habit and resilience.

How to Fertilize Sonne's arnica?

Fertilizer type: Balanced

Arnica parryi prefers a balanced approach to fertilization. Use a diluted liquid fertilizer at 1/4 strength to avoid over-application. For solid fertilizer, ensure it's evenly distributed in the soil to promote even nutrient absorption.

How to Prune Sonne's arnica?

Pruning Time: Spring, Summer

Start by inspecting the Arnica parryi plant for dead or damaged stems. Using clean, sharp pruning shears, cut these back to the base. Trim any overgrown areas to encourage a denser bush. Always make clean cuts at a 45-degree angle to prevent water damage. To shape the Arnica parryi, focus on maintaining its natural form while removing any errant branches that disrupt symmetry. Consider a slight reduction of lateral branches to maintain an appealing and balanced plant shape.

How to Propagate Sonne's arnica plant?

Propagate Time: Early spring, Spring

Collect seeds from mature Arnica parryi flowers. Clean them and let them dry. Prepare seed trays with a well-draining soil mix, ensuring it's moist before sowing.

Sow the seeds evenly over the prepared soil surface and gently cover them with a thin layer of soil. Keep the trays in a warm location with indirect sunlight to encourage germination.

For division, lift a mature plant from the soil and use a sharp knife to divide the root mass into sections, each with leaves and a portion of root. Replant immediately.

More About Propagating Techniques→

How to Repot Sonne's arnica plant?

Repotting frequency: Every 1-2 years

Arnica parryi gives a few clear signals when it's time for repotting. Look for roots growing out of the drainage holes or circling the pot's interior, as both indicate the plant is becoming root-bound. Additionally, if you notice a decline in growth or general health, it may be time for a new pot and fresh soil. Plan to repot during the growing season in spring or early summer for best results.

When selecting a new pot for Arnica parryi, ensure it’s only one size larger than the current pot. A pot that's too large can lead to overwatering and root rot. Opt for a pot with multiple drainage holes to ensure excess water can escape, preventing waterlogged soil and promoting healthy root growth.

For Arnica parryi, a well-draining sandy loam is ideal. This type of soil provides excellent drainage, mimicking the plant’s natural habitat while preventing root rot. It also retains enough moisture and nutrients to support healthy growth, ensuring the plant remains vigorous and resilient.

Toxicity

Ingestion, Skin Contact

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.