Old man's beard (Clematis drummondii)

Also known as: Drummond's clematis

Clematis drummondii, known as Old man's beard, is a deciduous perennial vine that flourishes in full sun to partial shade. It prefers well-drained soil and is notably drought, heat, and cold-tolerant. Blooming from late spring to early summer, it features small, creamy-white flowers. By summer through fall, female plants develop distinctive, fluffy seed heads that can reach up to 8 cm in length. This hardy vine is difficult to remove once established and can grow vigorously, making it suitable for ornamental use or erosion control.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting Toxicity

Attributes of Old man's beard

Lifespan

Perennial

Plant Type

Herb

Plant Height

91 cm to 2.5 m

Spread

90 cm to 2.5 m

Leaf Color

Green Blue

Flower Size

5 cm

Flower Color

White Green

Images of Old man's beard

Quickly Identify Old man's beard

Identify Clematis drummondii by its climbing habit, leathery leaves with a silvery underside, and clusters of small, white to cream-colored flowers that produce feathery seed heads.

Scientific Classification of Old man's beard

Phylum

Vascular plants

Class

Dicotyledons

Order

Ranunculales

Family

Buttercup

Genus

Clematis

Species

Old man's beard

Planting and Growing of Old man's beard

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 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

Plastic, Ceramic

How to Water Old man's beard?

Clematis drummondii requires a moderate amount of water to thrive. When watering, aim for about 500 ml per application to ensure the soil is evenly moist but not waterlogged. This plant prefers well-draining soil, so be careful to avoid excessive water retention.

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What Are the Sunlight Requirements for Old man's beard?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6-8 hours daily

Clematis drummondii flourishes best in full sun with partial sun opportunities. Ensuring access to 6-8 hours of sunlight daily boosts its growth and flowering potential, making it a resilient and decorative plant in the landscape.

How much sunlight does Clematis drummondii need? ›

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What Is the Ideal Temperature Range for Old man's beard?

Ideal Temperature: 65 ~ 75℉

The ideal temperature range for Clematis drummondii is between 65 and 75°F. This range supports optimal growth and flowering by providing a stable environment. Adequate ventilation and consistent temperatures within this range promote healthy development and reduce stress.

What Soil is Best for Old man's beard?

Soil type: Sandy loam, Calcareous soil

Soil PH: 6.5 ~ 7.5

Clematis drummondii thrives in well-drained soil that prevents waterlogging around its roots. This type of soil supports healthy root growth, helping the plant absorb nutrients efficiently and reducing the risk of root rot. The plant requires soil enriched with organic matter to maintain nutrient availability. This ensures robust vegetative growth and enhances the plant's overall resilience, leading to a healthier flowering season. Clematis drummondii prefers a pH range between 6.5 and 7.5. Soil within this range prevents nutrient lockout, allowing the plant to absorb essential elements crucial for photosynthesis and metabolic processes.

How to Fertilize Old man's beard?

Fertilizer type: Balanced

For Clematis drummondii, it is important to use a balanced fertilizer with equal parts of nitrogen, phosphorus, and potassium. A liquid fertilizer with an NPK ratio of 10-10-10 is ideal. Apply approximately 1/2 cup per plant during the growing season to ensure optimal growth and flowering.

How to Prune Old man's beard?

Pruning Time: Spring, Summer

Begin by inspecting your Clematis drummondii for older or damaged stems. Look for branches that are either visibly weak or have few blooms. Use clean, sharp pruning shears to make cuts at a slight angle to prevent water accumulation and subsequent rot. Cut back stems to strong, healthy buds just above where the stem branches out. This practice not only removes aging stems but also helps promote vigorous new growth that will lead to a more robust flowering season the following spring. Trim the plant to maintain your desired shape or form. Clematis drummondii can become unruly if left unchecked so a regular trim keeps it tidy and encourages the plant to put energy into producing more blooms, rather than simply growing in size. More About Pruning Techniques→

How to Propagate Old man's beard plant?

Propagate Time: Late spring,Early summer,Autumn

Collect seeds from mature Clematis drummondii plants. Clean and dry them thoroughly before planting. Pre-soak them in water for 24 hours to help speed up germination.

Choose a healthy, non-flowering stem for cutting. Cut 4-6 inch long sections with several leaves attached. Remove any lower leaves to prevent rot during rooting.

To propagate by layering, select a flexible stem from the parent plant. Bury a portion of it in soil while keeping the free end above ground. Secure it with a pin or wire until roots develop.

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How to Repot Old man's beard plant?

Repotting frequency: Every 2-3 years

Repot Clematis drummondii when the plant shows signs of being root-bound, such as roots growing out of the drainage holes or water not soaking through the soil. Spring and autumn are ideal seasons as the plant is less stressed by heat or cold.

Select a pot that is one size larger than the current one, with good drainage holes to prevent water logging. A slightly deeper pot allows ample room for root growth, which supports vigorous vine development and abundant flowering.

Opt for a well-draining potting mix enriched with organic matter like compost. This type of soil provides essential nutrients and prevents water retention, ensuring that the roots remain healthy and avoid rotting.

Toxicity of Old man's beard

Is Old man's beard toxic to humans?

The old man's beard plant poses a toxicity risk both through ingestion and skin contact. The symptoms may vary from mild to severe depending on exposure. Its leaves and flowers carry poisonous properties; ingestion may lead to excessive salivation, nausea, vomiting, or diarrhea. Touching the plant can result in skin irritations. Children are particularly vulnerable due to their inquisitive nature. Additionally, gardeners who handle the plant without wearing protective gear are also at risk of adverse effects.

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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