Showy goldenrod (Solidago speciosa)

Also known as: Showy Goldenrod

Goldenrod (Solidago spp.) is a perennial wildflower native to many parts of the United States. It is characterized by its tall, golden flower spikes and can adapt to both moist and dry environments. This plant is an important late-season food source for various wildlife, including bees, birds, and deer.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Showy goldenrod

Lifespan

Perennial

Plant Type

Herb

Plant Height

61 cm to 2 m

Spread

60 cm to 90 cm

Leaf Color

Green Blue

Flower Size

2.5 cm

Flower Color

Yellow

Images of Showy goldenrod

Quickly Identify Showy goldenrod

Upright stems up to 4 feet (1.2 meters) tall

Elongated clusters of vibrant golden yellow flowers

Dense pyramidal cluster of small yellow flower heads

Elliptical leaves 4 to 10 inches (10 to 25 cm) long

Reddish stems with green, lightly toothed leaves

Scientific Classification of Showy goldenrod

Phylum

Vascular plants

Class

Dicotyledons

Order

Asterales

Family

Daisy

Genus

Goldenrods

Species

Showy goldenrod

Planting and Growing of Showy goldenrod

Care Difficulty

Easy

Watering Schedule

Every 2 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 Showy goldenrod?

When watering Solidago speciosa, aim to moisten the soil thoroughly. Pour 500 ml of water to ensure the soil is moist but not waterlogged. This plant prefers its roots to be well-hydrated but not sitting in water, so ensure good drainage.

What are the symptoms of an underwatered Showy goldenrod? ›

What should I do if my Showy goldenrod is not getting enough water? ›

What are the symptoms of an overwatered Showy goldenrod? ›

How to save an overwatered Showy goldenrod? ›

What Are the Sunlight Requirements for Showy goldenrod?

Sunlight Requirements: Full sun

Duration of light: 6 to 8 hours

Solidago speciosa thrives best in full sun environments. Ensuring 6 to 8 hours of sunlight will promote vigorous growth, more robust stem development, and vibrant flowering attributes, crucial for ornamental uses.

How much light does Solidago speciosa need? ›

How to ensure ideal lighting for Solidago speciosa? ›

What are the benefits of providing ideal light for Solidago speciosa? ›

More About Sunlight Requirements Techniques→

What Is the Ideal Temperature Range for Showy goldenrod?

Ideal Temperature: 65 ~ 75℉

The ideal temperature range for Solidago speciosa is between 65°F to 75°F. This range provides the best conditions for growth and photosynthesis, allowing the plant to effectively absorb nutrients and water. Ensuring that the plant remains in this temperature range maximizes its potential for flowering and health.

What Soil is Best for Showy goldenrod?

Soil type: Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Solidago speciosa thrives best in well-drained soils, which allow excess water to escape, preventing root rot and fungal diseases. This drainage improves aeration, promotes root health, and enhances nutrient uptake, essential for the vibrant growth of this perennial beauty. Rich organic matter in the soil grants Solidago speciosa essential nutrients for its lush green foliage and vibrant flowers. The presence of compost or decomposed organic materials ensures a steady supply of vital minerals, making the plant more resilient and robust. Consistent moisture without waterlogging is crucial for the good health of Solidago speciosa. Moisture-retentive soil that doesn't become soggy provides the perfect balance, supporting healthy photosynthesis and continuous blooming from late summer into fall.

How to Fertilize Showy goldenrod?

Fertilizer type: Balanced

For Solidago speciosa, the fertilizer amount should be moderate. During the growing season, use around 2 teaspoons of liquid fertilizer per gallon of water once every two weeks. For slow-release fertilizers, use approximately 1/4 cup per plant as directed.

How to Prune Showy goldenrod?

Pruning Time: Spring, Summer

Start by removing any dead or diseased stems. Cut back last year's growth to ground level to encourage healthy, new growth. In early summer, trim the plant's top growth to encourage lateral branching and prevent legginess. This promotes fuller foliage and more blooms. Trim back up to one-third of the plant's height to shape and size it according to your garden's needs. This step ensures the plant maintains a neat posture. More About Pruning Techniques→

How to Propagate Showy goldenrod plant?

Propagate Time: Early spring, Late spring

Start by sowing the seeds indoors in a seed tray filled with a well-draining soil mix. Cover the seeds lightly with soil and water gently to keep the soil moist but not waterlogged.

Once seedlings have developed at least two sets of true leaves, they can be transplanted to individual pots or directly into the garden. Ensure they are hardened off if moving outdoors.

To propagate through division, carefully dig up a mature plant in early spring. Divide the root clumps into smaller sections making sure each has a healthy root system, and replant them.

More About Propagating Techniques→

How to Repot Showy goldenrod plant?

Repotting frequency: Every 2 to 3 years

Solidago speciosa, or Showy Goldenrod, signals its need for repotting when you notice roots circling the bottom of the pot or emerging from drainage holes. Another sign is if water pools on the surface for a prolonged period, indicating poor drainage. Ideally, repot during the growing season in spring when the plant is actively growing.

Select a pot that is one to two inches larger in diameter than the current one. It’s essential to have sufficient drainage holes to prevent waterlogging. A slightly larger pot ensures adequate space for root growth, reducing stress on the plant while providing stability and nutrient uptake. Using breathable materials like terracotta can enhance airflow.

The ideal soil for Solidago speciosa should be a well-draining potting mix. This type of soil prevents root rot and ensures aeration, promoting healthier root development. Mix a standard potting mix with some perlite or coarse sand to improve drainage and mimic the plant's natural habitat.