Blue Oat Grass
Helictotrichon sempervirens
- Stay Protected with Plant Sentry ™
Blue Oat Grass - #1 Container is backordered and will ship as soon as it is back in stock.
Plant Sentry™
Plant Sentry™

Plant Sentry™ Protected
Your order is protected by our compliance system that:
- Prevents restricted plants from shipping to your state
- Ensures plants meet your state's agricultural requirements
- Protects gardens from invasive pests and diseases
Delivery and Shipping
Delivery and Shipping
Delivery and Shipping
Fast, Safe Plant Delivery
Ships in 3-4 business days • Tracking provided • Weather protected
Under $50 | $9.99 |
$50 - $99.99 | $14.99 |
$100 - $149.99 | $16.99 |
$150+ | $24.99 |
✓ Zone-specific timing • ✓ Professional packaging • ✓ Health guarantee
Understanding Plant Options
Nature Hills offers plants in two main formats:
- Container Plants: Grown in pots with soil, sized by container volume and plant age
- Bare Root Plants: Dormant plants without soil, sized by height measurements
Container Plant Sizes
Container sizes indicate plant age and growing capacity rather than liquid volume equivalents. Our containers follow industry-standard nursery "trade gallon" specifications, which differ from standard liquid gallon measurements.
Young Plants (6 months to 18 months old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
2" x 2" x 3" | 0.18 - 0.21 dry quarts | 0.20 - 0.23 dry liters |
4" Container | 0.31 - 0.87 dry quarts | 0.35 - 0.96 dry liters |
4.5" Container | 0.65 dry quarts | 0.72 dry liters |
6" Container | 1.4 dry quarts | 1.59 dry liters |
1 Quart | 1 dry quart | 1.1 dry liters |
5.5" Container | 1.89 dry quarts | 2.08 dry liters |
Established Plants (18 months to 2.5 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
2 Quart | 2 dry quarts | 2.2 dry liters |
#1 Container | 2.26 - 3.73 dry quarts | 2.49 - 4.11 dry liters |
5" x 5" x 12" | 3.5 - 4.3 dry quarts | 3.85 - 4.74 dry liters |
Mature Plants (2-4 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
#2 Container | 1.19 - 1.76 dry gallons | 5.24 - 7.75 dry liters |
#3 Container | 2.15 - 2.76 dry gallons | 8.14 - 12.16 dry liters |
Large Plants (3-5 years old)
Container Size | Actual Volume | Metric Equivalent |
---|---|---|
#5 Container | 2.92 - 4.62 dry gallons | 12.86 - 20.35 dry liters |
#6 Container | 5.25 - 6.01 dry gallons | 23.12 - 26.42 dry liters |
#7 Container | 5.98 - 6.53 dry gallons | 26.34 - 28.76 dry liters |
Bare Root Plants
Bare root plants are sold by height from the root system to the top of the plant. Plants may exceed minimum height requirements.
Common Sizes:
- Trees: 1 foot, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet
- Shrubs & Perennials: 1 foot, 18 inches, 2 feet
Important Notes
Container Volume Specifications
- Trade Gallon Standard: Our containers follow industry-standard "trade gallon" specifications established by the American National Standards Institute (ANSI Z60.1) for nursery stock
- Volume Variations: Actual soil volume may vary due to plant root systems and growing medium settlement
- Age Indicators: Container size primarily indicates plant age and maturity rather than liquid volume equivalents
Growing Conditions
- Plant size can vary based on variety and growing conditions
- Container size helps indicate plant maturity and establishment level
- Larger containers generally mean more established root systems and faster landscape establishment
Seasonal Availability
- Bare root plants are available seasonally when dormant
- Container plants are available throughout the growing season
- Specific varieties may have limited availability in certain sizes
Questions?
For questions about specific plant sizes or availability, please contact our plant experts who can help you choose the right size for your landscape needs.
Plant Highlights
Blue Oat Grass highlights at a glance!
Specifications
Specifications
-
Brand
-
Botanical Name
-
Growing Zones
-
Mature Height
-
Mature Spread
-
Sun ExposureFull Sun
-
Moisture
-
Soil
-
Growth RateFast
-
Flower Color
-
Pollinator Friendly
-
Pollinator Required
-
Pruning Time
-
Bloom PeriodSummer

Growing Zones 4-11
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.