Showy Senna

Cassia bicapsularis

$23.00

1 Gallon | Hardiness Zones 8-10

This subtropical shrub has abundant bright yellow flowers in late fall. It is evergreen in zone 10 and stem hardy in zone 9. The seeds are said to be poisonous but not deadly. In zone 8 it may freeze back but after cold kills the tops it can be cut back and mounded with coarse sand and mulched with pine straw. As weather warms, remove this covering to allow new shoots to emerge. Given rich soil and ample water, these plants will thrive during hot summers and bloom around Thanksgiving time. Riffle, in The Tropical Look says this plant is widespread in the American tropics but the exact native range is uncertain.
Plant Specs
  • Zones: 8 - 10
  • Sun: Full Sun
  • Soil: Well-drained
  • Height at Maturity: 12 - 15 Feet
  • Spread at Maturity: 8 - 10 Feet
  • Growth Rate: Fast

Deciduous
Flower/Foliage

Flower Structure: Produces large, showy, bright yellow or pink flowers in clusters.

Blooming Season: Blooms from late summer to fall, often continuing until the first frost.

Color: The flowers are typically a vibrant yellow or pink, creating a striking visual display against the green foliage.

Showy yellow or pink, fall
Care Info

Read full care instruction manual here.

Light Requirements: Prefers full sun for optimal growth and blooming. It can tolerate partial shade but may produce fewer flowers.

Soil Requirements: Thrives in well-draining soil and is adaptable to various soil types, including sandy, loamy, and clay soils. It prefers slightly acidic to neutral pH (6.0-7.0). Adding organic matter like compost can improve soil fertility and drainage.

Watering: Requires regular watering, especially during dry periods and the growing season. Keep the soil consistently moist but not waterlogged. Once established, it can tolerate some drought but performs best with consistent moisture.

Temperature and Humidity: Hardy in USDA zones 9-11. Prefers warm temperatures and high humidity. It is frost-sensitive, so in cooler climates, consider growing it as an annual or providing winter protection.

Fertilization: Apply a balanced, slow-release fertilizer in early spring to support healthy growth and flowering. An additional application of compost or well-rotted manure can enhance soil fertility.

Pruning: Prune after flowering to maintain shape and encourage bushier growth. Light pruning helps promote new growth and a tidier appearance. Remove dead or damaged branches as needed.

Pests and Problems: Generally pest-resistant but can occasionally attract aphids and whiteflies. Ensure good air circulation and avoid overhead watering to prevent fungal diseases. If pests are detected, treat with insecticidal soap or neem oil.

Suitable Environment: Ideal for garden beds, borders, and as a specimen plant. Its bright yellow flowers and attractive foliage add a tropical feel to any landscape. It is also a magnet for butterflies, making it a great addition to butterfly gardens.

Pickup available at Aiken Nursery

Usually ready in 2-4 days

Grown in Aiken, South Carolina

At Woodlanders, we are committed to quality.

All our plant material is carefully propagated, grown, and nurtured at our humble nursery in Aiken, South Carolina.

Learn more about Woodlanders here.

Here’s a closer look at how we produce our plants:
from rooting to shipping, our top priority is ensuring you receive healthy, thriving plants for your garden’s success.

The majority of our plants are carefully cultivated from rooted cuttings, while we also utilize propagation methods such as seed, air layering, and grafting, thoughtfully chosen to suit each plant’s unique needs.

Our plants are cultivated using sustainable practices, including organic soil blends and eco-friendly pest management, ensuring they thrive while minimizing environmental impact.

We are proud to contribute to local biodiversity through ongoing donations to the Aiken Arboretum and support for local wildlife conservation efforts, helping to preserve and enhance our community’s natural ecosystems.

Plant Success Tip #1

Unpack Promptly

Carefully unpack your plant as soon as it arrives. Check the roots and soil to ensure they are still moist. If the roots feel dry, lightly mist or water them before proceeding with planting or temporary storage.

Plant Success Tip #2

Acclimate Your Plant

Allow your plant to adjust to its new environment by placing it in a sheltered spot for a day or two before planting, especially if it has traveled a long distance. Avoid exposing it to extreme temperatures right away.

Plant Success Tip #3

Follow Planting and Care Instructions

Plant your new arrival as soon as possible, following the specific care guidelines provided. If planting outdoors isn’t immediately possible, temporarily pot it in well-draining soil to maintain health until conditions are suitable.

Read Care Instructions

Frequently Asked Questions

What to expect upon delivery

All our plants are sold in 1-gallon sizes, though the height of each plant can vary depending on its growth rate and seasonality, typically ranging from 1/2 to 2.5 feet.

Each plant is carefully packaged with its roots enclosed in a secure plastic bag containing moist soil, forming a compact root ball. To ensure safe transport, the box is padded with recycled newspaper, providing both stability and eco-friendly protection from weather during shipping.
What is your return policy?

Review our full return policy information on our SHIPPING AND RETURNS POLICY page.
What payment methods can I use?

We offer 35 different payment methods including major providers like Mastercard, Visa, PayPal, American Express and Diners as well as many different local payment methods including Klarna, iDEAL, AliPay, Sofort, giropay, and many more.
Can I make changes to my order after it’s been placed?

At Woodlanders, we strive to fulfill orders as quickly as possible. Therefore, we can only accommodate changes to your order within the first 24 hours after it has been placed. These changes include adding or removing products and modifying the delivery address. If you need to make any changes or if there has been a mistake with your order information, please reach out to us promptly via our CONTACT page with your order number for the quickest resolution.

Your satisfaction is our priority, and we appreciate your understanding and cooperation.