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Graceful Grasses® Fiber Optic Grass

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Pre-Order for Spring of 2022 - Learn More

  • Height 10-14 Inches
  • Width 10-14 Inches
  • Use as a filler when using in containers
  • Award winning plant perfect for water features!

Although not a true grass, Isolepis cernua aka Scirpus cernuus, is a grass like annual in many parts of the United States and perennial in others. Where it is perennial, it is evergreen. In colder climates it should be treated as an annual and will not return the following spring on the same roots. Tiny white fluffy flowers bloom at the very tip of the stem giving credence to the name Fiber Optic Grass. Graceful Grasses Fiber Optic Grass is an award winner in northern and southern gardens.

Native to North America in Zones 8a through 10b, all other zones can plant this annual out after all danger of frost has passed. It thrives in part to full sun, and makes a great border, edging or mass planting in your spring garden. It also makes a great container plant and can be brought indoors before the first frost to give you the benefit of its evergreen capabilities. It is also a marginal wetland plant that would look great in your water feature.

Graceful Grasses Fiber Optic Grass Care

Care is easy as long as you meet its growing requirements. Full sun, moist peaty, sandy soil, or even a shallow spot in your water garden edge will give it the water it craves. Soil pH should be slightly acidic at 5.8 to 6.2 as most annuals prefer. Give it regular fertilizing if kept in containers and a water soluble fertilizer if in a water garden (be sure to check for fish safe fertilizers if you have a fish population).

Deadheading is not required as the plant creates its own appeal by changing its white silvery flowers to a brown/tan seed pod that is not unattractive on its own. You can prune it back by about ⅓ by shearing it straight across and it will put out new growth. Dividing the root ball can be done in early spring/late winter, but be aware this creates a cold sensitive plant at that point and in colder climates it may not survive the winter.

Graceful Grasses Fiber Optic Grass Spacing

Spacing is not really crucial for this grass-like plant as they only grow up to 14 inches tall and 14 inches wide. Plantings should be spaced 10 to 12 inches apart for a low mounding/cascading effect in large containers. Pair this annual with other full sun annuals like papyrus, hypoestes, sedum, argyranthemum, coleus, calibrachoa, euphorbia and salvia just to name a few. The medium green hair-like stems contrast well with warm and cool palette color schemes.

Graceful Grasses® Fiber Optic Grass Information

USDA Hardiness Zones: 8-10
Flower Color(s): White
Bloom Period: Early Summer, Mid Summer, Late Summer
Foliage Color(s) Green
Light Exposure: Partial Sun to Full Sun
Height Class: Short
Height: 10-14 Inches
Spread: 10-14 Inches
Spacing: 10-12 Inches
Habit: Mounded
Watering: Average
Drought Tolerant: No
Container Role: Filler
Use Types: Container, Houseplant, Landscape
Features: Native to North America, Deadheading Not Necessary
Maintenance: Easy
Scientific Name: Isolepis (Scirpus) cernuus
Common Name: Graceful Grasses® Fiber Optic Grass
Other Name(s):
Plant Type: Annual
Brand: Proven Winners


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Plant Addict Guarantee (Included On All Plant Orders)

Plant Addicts guarantees your plant(s) will arrive happy and healthy, but the plant(s) are being shipped through the mail and accidents happen. If the plant is dead, has dried out roots or the incorrect item was shipped just notify Plant Addicts within 3 days upon delivery. We may ask for pictures but will try to make it as easy as possible for you. Please note plant(s) with damaged branches or wilted leaves will not qualify for this guarantee. Plants are very resilient and will rebound quickly when cared for correctly.

For information on how to care for you new plant please check out our guide. Guide: How to Care for Your New Plant(s)

Plant Addicts Warranty - 1 Year (Extra Purchase Required)

We encourage all plant lovers to purchase the Plant Addicts Warranty whether you’re new or an expert. There are many variables outside our control and yours that can cause the demise of your plant(s). Examples would be hungry animals, drought, poor soil conditions, over watering, disease, insects & many other factors. The Plant Addicts Warranty is a 1 year warranty protecting you from all the unknowns and will replace your plant if it moves on to the plant afterlife.

The warranty is purchased on a per plant basis and must be purchased at the same time as the plant purchase. We will cover 100% of the price of the plant but the warranty does not cover shipping cost. Simply let us know if your plant has died within one year of receiving it and we’ll get you a new one shipped out. We may ask for photos for documentation purposes but again we’ll try to make it as easy as possible.

For more information, please go to our Shipping & Returns page at the bottom of the website.

Guide: How to Care for Your New Plant(s)

Planter Shipping

Standard Colors: 2-3 business days

Special Order Colors: 8 weeks - this is due to the planter being custom made with the color(s) of your choice

Please Note: On special orders there can not be any cancellations

Plant Shipping

Time of Order:

Summer Shipping

  • If there is extreme heat we’ll delay shipping.  
    • We’ll have to review what areas the plants are traveling through along with your location

Once your plant is shipped you’ll receive an email with tracking information. Depending on the above criteria we’ll ship your plant(s) towards beginning of the following week from your order. We put together this helpful guide of what to do when you receive your plants in the mail.

It is important to know that all of our plants are clearly labeled for which growing zones the plant can survive in. The plants are thoroughly trialed and tested in every growing zone before we state the plant can grow in a zone. Again, our #1 priority is to ship the plants to you healthy and ready to thrive in your location. So we will do everything in our power to do so.

1 Review - Graceful Grasses® Fiber Optic Grass Show Reviews

  • 1

    Posted by Tracy Heberling on Jun 17th 2021

    When my fiber optic grass showed up at my home, the poor grass was already half yellow and sickly looking, and I believe it was due to extreme temperatures and traveling through the mail during that time.