River Oat Grass

Chasmanthium latifolium

$16.00

1 Gallon | Hardiness Zones 5-9

Chasmanthium (Uiola) latifolium is a luxuriant and shade tolerant perennial grass with relatively wide leaf blades and taller spikes of drooping seed heads much like "Sea Oats". Attrative in the garden and seed stalks a great component for dried arrangements. Re-seeds and may become somewhat invasive in favorable garden situations but not hard to control. Native to eastern U.S.

Photos courtesy of Joseph A. Marcus
Plant Specs
  • Zones: 5 - 9
  • Sun: Full Sun and Part Shade
  • Soil: Well-drained
  • Height at Maturity: 2 - 3 Feet
  • Spread at Maturity: 15 - 18 Inches
  • Growth Rate: Fast

Deciduous
Flower/Foliage

Flower Structure: Produces flat, drooping, oat-like seed heads.

Blooming Season: Blooms from mid-summer to early fall.

Color: The seed heads start green and mature to a golden tan, providing visual interest throughout the growing season.

Dark green, turning to bronze
Care Info

Read full care instruction manual here.

Light Requirements: Prefers partial shade to full shade. It can tolerate full sun, especially in cooler climates, but partial shade is ideal for maintaining vibrant foliage color.

Soil Requirements: Thrives in moist, well-draining soil. It is adaptable to various soil types, including loamy, sandy, 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 first growing season to establish a deep root system. 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 5-9. Prefers moderate temperatures and can tolerate a range of humidity levels. It is adaptable to both dry and moist conditions once established.

Fertilization: Generally does not require heavy fertilization. If growth appears slow or foliage color fades, apply a balanced, slow-release fertilizer in early spring. An annual application of compost can enhance soil fertility.

Pruning: Cut back the old foliage to the ground in late winter or early spring before new growth begins. This helps to tidy the plant and promote vigorous new growth. Remove any dead or damaged stems throughout the growing season to maintain its appearance.

Pests and Problems: Generally pest-free and disease-resistant. Ensure good air circulation to prevent fungal diseases. If pests like aphids are detected, treat with insecticidal soap or neem oil.

Suitable Environment: Ideal for shaded garden areas, woodland gardens, and along borders. Its attractive, arching seed heads and bamboo-like foliage add texture and interest to the landscape. It can also be used in container gardening for patios and terraces.

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.