Position your Tragopogon porrifolius in a location where it receives ample sunlight for the most part of the day. Placing it near a south-facing window or in a garden spot with very few obstructions ensures it gets the required amount of light.

Common salsify (Tragopogon porrifolius)

Also known as: Vegetable oyster, Purple Goat's beard, Jack go to bed

Common salsify (Tragopogon porrifolius), often referred to as oyster plant or vegetable oyster, is an edible plant native to Europe and Africa. It thrives in conditions similar to those needed for growing parsnips and carrots.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Common salsify

Lifespan

Biennial

Plant Type

Herb

Plant Height

1.2 m

Spread

30 cm

Leaf Color

Green Blue

Flower Size

5 cm

Flower Color

Purple Pink

Images of Common salsify

Quickly Identify Common salsify

Purple to mauve daisy-like flowers

Edible root with oyster-like flavor

Distinctive fluffy pappus fruit for wind dispersal

Grass-like leaves with waxy undersides

Sticky, milky white sap when stem is cut

Scientific Classification of Common salsify

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Salsifies

Species

Common salsify

Planting and Growing of Common salsify

Care Difficulty

Easy

Watering Schedule

Every 4 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

Plastic, Ceramic

How to Water Common salsify?

For Tragopogon porrifolius, water thoroughly but sparingly, ensuring around 250 ml each session. The soil should be evenly moist, but not waterlogged. Observe the top inch of soil; it should be dry before watering again. Aim to moisten the entire root zone without causing standing water.

What are the symptoms of an underwatered Common salsify? ›

What should I do if my Common salsify is not getting enough water? ›

What are the symptoms of an overwatered Common salsify? ›

How to save an overwatered Common salsify? ›

What Are the Sunlight Requirements for Common salsify?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 6-8 hours daily

Tragopogon porrifolius thrives best in environments offering full to partial sun exposure for about 6-8 hours. This range ensures proper photosynthesis, leading to optimal plant health and improved flowering patterns.

Best Positioning ›

Solutions for Ideal Lighting ›

Benefits of Ideal Lighting ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Common salsify?

Ideal Temperature: 60 ~ 70℉

For optimal growth, Tragopogon porrifolius requires temperatures between 60°F and 70°F. This range supports proper root development and maximizes photosynthesis, leading to a robust plant structure and vibrant foliage.

What Soil is Best for Common salsify?

Soil type: Loam, Sandy loam, Sandy soil

Soil PH: 6.5 ~ 7.5

Tragopogon porrifolius thrives in well-drained soils that prevent waterlogging, reducing the risk of root rot and promoting healthy root development. The plant requires nutrient-rich soil to enhance its growth and produce robust leaves and flowers, as it aids in the uptake of essential nutrients necessary for vigorous health. A soil with moderate moisture retention helps maintain adequate hydration while preventing excess water that might hamper growth, providing a balanced environment for optimal root health.

How to Fertilize Common salsify?

Fertilizer type: Balanced

For Tragopogon porrifolius, use a balanced fertilizer with equal parts nitrogen, phosphorus, and potassium. For liquid fertilizers, dilute them to half strength recommended on the label to avoid root damage, applying approximately 1-2 liters per square meter.

How to Prune Common salsify?

Pruning Time: Spring, Summer, Autumn

Begin by identifying any dead or damaged leaves, which should be removed close to the base to prevent disease spread. Next, use sharp scissors or pruning shears to trim back flowering stems after blooms fade, which helps redirect energy back to the roots. Additionally, thin out overcrowded foliage by removing older leaves to promote airflow and reduce humidity that could encourage fungal growth. More About Pruning Techniques→

How to Propagate Common salsify plant?

Propagate Time: Spring

Choose healthy and mature seeds for planting to ensure a higher germination rate. It's important to use seeds from a reliable source to maintain plant quality.

Sow the seeds in a seed tray filled with potting mix, placing them about a quarter-inch deep. Gently cover them with soil and water lightly to keep the soil moderately moist.

Once seedlings are substantial and the weather is suitable, usually after the risk of frost, transplant them into the garden. Ensure to dig a hole deep enough for the roots and firm the soil gently around the plant.

More About Propagating Techniques→

How to Repot Common salsify plant?

Repotting frequency: Every two years

Tragopogon porrifolius requires repotting when growth slows, roots appear through the drainage holes, or the soil dries out too quickly. Spring and summer are ideal as active growth allows quicker root establishment, reducing transplant shock.

Select a pot slightly larger than the current one with adequate drainage. Pans made of terracotta or ceramic are ideal as they help maintain balanced moisture, crucial for maintaining Tragopogon porrifolius's delicate root system.

Opt for a well-draining, loamy soil mix, possibly with some sand and perlite. This blend ensures adequate aeration and drainage, preventing root rot while providing the essential nutrients for new growth.