Spanish needles (Bidens bipinnata)

Also known as: Bipinnate Beggar-Ticks, Spanish Needles Beggar-Ticks, Spanish blackjack, Cuckolds

The dandelion (Taraxacum officinale) is a widely recognized flowering plant closely related to daisies. Native to Europe and Asia, dandelions have spread globally and thrive in various environmental conditions. Known for their resilience, dandelions can easily adapt to different habitats and are commonly found in lawns, gardens, and along roadsides.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Spanish needles

Lifespan

Annual, Perennial

Plant Type

Herb

Plant Height

1.5 m

Spread

60 cm

Leaf Color

Green

Flower Size

6 mm to 1 cm

Flower Color

Yellow White

Images of Spanish needles

Quickly Identify Spanish needles

Recognizable by its bipinnate leaves and small yellow flowers that turn into barbed seed heads capable of clinging to clothing and fur.

Scientific Classification of Spanish needles

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Beggarticks

Species

Spanish needles

Planting and Growing of Spanish needles

Care Difficulty

Easy

Watering Schedule

Every 4 days

Sunlight Requirements

Full sun

Sunshine Duration

4-8 hours

Ideal Temperature

70-85℉

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 Spanish needles?

When watering Bidens bipinnata, ensure the soil is moistened but not waterlogged. Aim to give the plant approximately 250 ml of water per session. This amount should suffice to reach the deeper roots without causing root rot. It's crucial to check that the top inch of the soil is dry before the next watering session.

What are the symptoms of an underwatered Spanish needles? ›

What should I do if my Spanish needles is not getting enough water? ›

What are the symptoms of an overwatered Spanish needles? ›

How to save an overwatered Spanish needles? ›

What Are the Sunlight Requirements for Spanish needles?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6 to 8 hours

Bidens bipinnata thrives in environments offering 'Partial sun, Full sun'. This range ensures optimal photosynthesis, maximizing growth and flowering without the risks associated with heat stress.

How does Bidens bipinnata thrive best? ›

What solutions help achieve the ideal light conditions? ›

What are the benefits of optimal light for Bidens bipinnata? ›

What Is the Ideal Temperature Range for Spanish needles?

Ideal Temperature: 70 ~ 85℉

The ideal temperature range for Bidens bipinnata cultivation is between 70°F and 85°F. This range ensures optimal growth and allows the plant to thrive without experiencing temperature stress.

What Soil is Best for Spanish needles?

Soil type: Sandy loam, Loam, Sandy soil

Soil PH: 6.5 ~ 7.5

Bidens bipinnata thrives in well-draining soil to prevent root rot. This characteristic ensures that water doesn't stagnate around the roots, promoting healthy growth. This plant prefers moderately fertile soil, which provides the necessary nutrients without being too rich, thereby supporting its modest nutrient needs effectively. Consistent moisture in the soil is beneficial for Bidens bipinnata, helping it absorb nutrients efficiently and maintain lush growth throughout its lifecycle.

How to Fertilize Spanish needles?

Fertilizer type: Balanced

For Bidens bipinnata, it is ideal to apply a balanced liquid fertilizer at a dilution of 1:4 (fertilizer:water) when watering twice a month. This ensures the plant receives nutrients without overwhelming its delicate tissue structure. For solid fertilizers, distribute a light layer of granular, slow-release fertilizer twice a year, integrating it well with the topsoil to support sustained growth.

How to Prune Spanish needles?

Pruning Time: Spring, Summer

Frequent inspections for dead or damaged stems can help maintain the plant’s health. Regular checks enable timely intervention, preventing potential spread of disease and ensuring the plant remains robust. Make clean cuts at a 45-degree angle about 1/4 inch above a node facing outward. This technique encourages outward growth and prevents water from settling on the cut, reducing the chance of rot or disease. After pruning, gather all debris and dispose of it away from the garden area. This practice prevents any potential spread of diseases from removed plant material back to healthy plants.

How to Propagate Spanish needles plant?

Propagate Time: Spring, Early spring, Summer

Fill your seed tray with potting soil. Ensure it is well-aerated and moist but not overly wet. Tamp down lightly to create a level surface for sowing.

Evenly distribute the Bidens bipinnata seeds on the soil surface. Lightly cover them with a thin layer of soil or vermiculite, as they require light to germinate.

Gently water the seeds using a fine mister to avoid disturbing them. Maintain consistent moisture without making the soil soggy, as this is critical for germination success.

How to Repot Spanish needles plant?

Repotting frequency: Annually

Repotting Bidens bipinnata is best when you observe stunted growth, roots protruding from the drainage holes, or depleted soil quality. These are clear signals that the plant needs more space and nutrients. Opt for repotting during early spring or summer to allow the plant ample time to adjust and thrive.

Selecting the right pot for Bidens bipinnata is crucial. Choose a pot that is about 2 inches larger in diameter than the current one. This ensures ample space for root growth and prevents root-bound conditions. Ensure the pot has sufficient drainage holes to prevent overwatering and root rot, promoting healthy root development.

Choose a well-draining and nutrient-rich soil mix for Bidens bipinnata. This type of soil prevents waterlogging, which can lead to root rot. The nutrient content supports healthy growth and vibrant foliage. Adding perlite or sand can enhance drainage capabilities, allowing roots to breathe and grow soundly.