Blue Oat Grass

Availability: Out of stock

Rugged Blue Oat Grass Excellent Color, Form

  • Wonderful Metallic-Blue Color
  • Colorful Semi-Evergreen Foliage
  • Showy Seed Heads in Fall and Winter
  • Not Invasive
  • Clump-Forming
  • Easy Care
  • Urban Tolerant
  • Deer Don't Prefer the Taste
  • Waterwise Choice for Xeriscape Design
  • Controls Erosion

At once airy and sturdy, Blue Oat Grass (Helictotrichon sempervirens) grows in neat, densely rounded clumps of metallic, silvery-blue foliage. This reliable mid-sized ornamental grass is often used in garden design and landscaping to polish the edge or as a mass planting.

Vibrant coloration combines with handsome form and delivers a big impact. Rely on this eye-catching ornamental grass to create an elegant accent day in and day out.

As summer long panicles are tipped with blue-green blooms. Over time, these develop into showy, golden oat-like seed heads that arch up and away from the mounded foliage.

In warmer climates, the fountain of iced blue blades stays evergreen over the winter. Famously low-maintenance Blue Oat Grass requires very little care.

Like other Grasses, Blue Oat brings a wonderful sense of motion to your space. The slender blue blades loft and sway in the breeze for a relaxing effect.

Install this dramatic Ornamental Grass in your space...then kick back and relax. Order our high quality commercial-grade Blue Oat Grass today!

How to Use Blue Oat Grass in the Landscape

Blue Oat Grass delivers style, movement and reliable structure. This is a wonderful accent in rock gardens and low-maintenance plantings.

It combines well with other, larger grasses for an easy-care visual impact. Place Blue Oat Grass in front of other, larger grasses; or use behind some of our smaller Blue Fescue cultivars.

Because these cool weather grasses need good air circulation, we recommend setting your plants three feet apart. Measure from the center of one to the center of the next.

Blue Oat Grasses are an excellent choice for color and form. Use in outdoor containers on rented balconies for a high impact, urban tolerant look.

Place these versatile grasses in the ground to solve a variety of landscape challenges. Use a mass planting on a slope to stabilize the soil; it will be far safer than trying to mow turf.

Tuck them in front of boulders to soften their appeal. It only takes a season of growth for Blue Oat Grass to ground the look of your newly installed hardscape.

Place them on hard to reach terraces to create a Xeriscape Garden. Blue Oat Grass requires minimal care, and it is both a forgiving and hardy grass.

Plant them in a geometric pattern to create a thoroughly modern foundation planting. Then, style your planting bed with mulch that coordinates with your home's exterior.

#ProPlantTips for Care

Blue Oat Grass prefers fertile soils, but will tolerate less fertile conditions, as well as sandy or heavy-clay soil as long as it drains well. The more sun you can give it, the better the performance will be for you.

Once their roots are established in the ground, Blue Oat becomes blissfully waterwise. Apply a consistent amount of water on a regular basis for the first year to support their root system.

Nature Hills Root Booster is a life-long symbiotic partner for these investment plants. Follow directions during planting to help the tiniest feeder roots access micronutrients from the soil.

Give Blue Oat Grass the right conditions, and they should last for many years with minimal care. In the coldest zones, trim back most of the foliage in the late winter or early spring each year.

If it remained evergreen over the winter in your climate, gently rake out any debris at that time. Enjoy a fresh start to your new growing season.

The only risk is falling in love with the superior beauty of these good-looking plants and wanting more. We sell out of Blue Oat Grass quickly.

Place your order to complete your entire project today.

Buying Options for Plants

Nature Hills sells a large variety of plants with several options available. Plants are offered in both potted containers and as dormant bare root without soil. Here is a helpful resource to understand your options as you create a beautiful landscape with help from Nature Hills.

Ever wonder what a larger plant will mean for your landscape? Container Sizes are really all about the age of the plant!

Seasonally, Nature Hills offers hand selected, high quality bare root trees, shrubs and perennials. Bare root plants are sold by height from the top of the root system to the top of the plant. Plants may be taller than the height minimums.

  • Popular sizes of select trees are 1 foot, 2 feet, 3 feet, etc.
  • Popular sizes of select bare root plants is 1 foot, 18 inches, etc.

Nature Hills Container Size by Volume

Keep in mind, specific varieties and different growing conditions can affect the rate at which plants grow. Variations in size may occur.

Young Plants to 18 Months
Size Volume
2"x2"x3" Ranges from .18 to .21 dry quarts / .198 to .23 dry liters in volume
4.5" Container Equal to .65 dry quart / .72 dry liter in volume
Sprinter Pot Equal to .63 dry quart / .69 dry liter in volume
4" Container Ranges from .31 to .87 / .35 to .96 dry liter in volume
6" Container Equal to 1.4 dry quarts / 1.59 dry liters in volume
1 Quart Equal to 1 dry quart / 1.1 dry liter in volume
5.5" Container Equal to 1.89 of a dry quart / 2.08 dry liters in volume
4"x4"x5" Ranges from .8 to 1.1 dry quarts / .88 to 1.2 dry liters in volume
4"x4"x6" Ranges from 1.0 to 1.3 dry quarts / 1.1 to 1.41 dry liters in volume
4"x4"x9" Ranges from 1.1 to 2.1 dry quarts / 1.2 to 2.3 dry liters in volume
4"x4"x10" Ranges from 1.7 to 2.3 dry quart / 1.87 to 2.53 dry liters in volume
Plants 18 Months - 2.5 Years Old
Size Volume
2 Quart Equal to 2 dry quarts / 2.2 dry liters in volume
#1 Container Ranges from 2.26 to 3.73 dry quarts / 2.49 to 4.11 dry liters in volume
5"x5"x12" Equal to 3.5 to 4.3 dry quarts / 3.85 to 4.74 dry liters in volume
Plants 2 - 4 Years Old
Size Volume
#2 Container Ranges from 1.19 to 1.76 dry gallons / 5.24 to 7.75 dry liters in volume
#3 Container Ranges from 2.32 to 2.76 dry gallons / 10.22 to 12.16 dry liters in volume
Plants 3 - 5 Years Old
Size Volume
#5 Container Ranges from 2.92 to 4.62 dry gallons / 12.86 to 20.35 dry liters in volume
#6 Container Ranges from 5.25 to 6.01 dry gallons / 23.12 to 26.42 dry liters in volume
#7 Container Ranges from 5.98 to 6.08 dry gallons / 26.34 to 26.78 dry liters in volume

About Plant Sentry™

Plant Sentry is designed to protect both consumers and the nursery trade from invasive plant pests and diseases. Sites that display the Plant Sentry protection badge are protected from consumers buying and nurseries shipping material carrying invasive pests and diseases.

This proprietary eCommerce software prevents the shipment of a restricted plant to each state. The Plant Sentry system includes a shipment certification program. The Plant Sentry Compliance Officer works closely with and each nursery or fulfillment center to ensure only compliant plants are sold to customers.

Click Here to learn more

Plant Sentry


To obtain a more accurate shipment time-frame, simply enter your zip code in the “Find Your Growing Zone” box to the right. Our plants are grown all over the country and lead time on items may be different because of this. Once your order is placed, you will also receive the specific shipment time-frame information as part of your order confirmation. Once an item ships, you will receive shipment notification and tracking numbers, so you can follow along while your plant travels to your doorstep. We use FedEx, UPS, or USPS at our discretion.

Due to winter weather we have put a hold on shipping to the areas shown below in grey. You can still order now and we will ship the plant to you during an appropriate time for your zone.

*If you have found your zone already, it will be highlighted in the table below.
Color Zone Times
3 Spring 2019
4 Now
5 Now
6 Now
7 Now
8 Now
9 Now
10 Now
11 Now

Shipping Rates

At Nature Hills we handle, package and ship the products you order with the utmost care to ensure healthy delivery. Shipping and handling charges are calculated based on the tables below. Please note that some items include an additional handling surcharge, these will be noted on the item's product page.

From To S&H
0 - 19.99 24.99
20 - 49.99 29.99
50 - 69.99 34.99
70 - 99.99 39.99
100 - 129.99 44.99
130 - 149.99 48.99
150 - 150+ Approx 28%

Click here to see our full rates


Blue Oat Grass Is Suited to Grow in Zones 4-11
Growing Zones 4-11
More Information
Brand Nature Hills' Choice
Botanical Name Helictotrichon sempervirens
Type Perennial
Mature Height 20 - 24 inches
Mature Spread 20 - 24 inches
Sun Exposure Full Sun
Soil Well Drained
Moisture Low
Growth Rate Fast
Flower Color Metallic Blue
Foliage Metallic Blue
Foliage Color Blue
Pollinator Friendly Yes
Pruning Time Early Spring