Plants
Growing a First Knight fountain grass 🌿 is your easiest route to a privacy screen that stays lush all year with almost no effort.
Struggling to create a lush, evergreen privacy screen that thrives year-round without constant upkeep? First Knight Fountain Grass could be your game-changing solution—growing up to 3 feet per year while requiring minimal maintenance.
This drought-tolerant grass thrives in USDA Zone 6a and beyond, making it perfect for spring planting in April or May.
What makes it stand out? Unlike high-maintenance hedges, this ornamental grass needs full sun and well-draining soil but handles dry spells like a pro. With the right care, you’ll have a dense, textured screen in just a few seasons—no trimming, no fuss.
In this guide, I’ll walk you through planting tips, watering schedules, and year-round maintenance so you can enjoy a low-effort, high-impact privacy solution faster than you’d expect.
First Knight fountain grass: key growing conditions for a thick privacy screen
If you're dreaming of a low-maintenance, evergreen privacy screen that grows fast and stays lush year-round, First Knight Fountain Grass is your perfect match. This ornamental grass thrives in USDA Zones 5-9 and can create a 3-6 foot tall barrier within just 2-3 years with the right conditions.
The key to achieving that dense, impenetrable screen lies in understanding its sunlight, soil, water, and spacing needs—let's dive into what your First Knight needs to flourish.
Unlike traditional hedges that require constant pruning, First Knight Fountain Grass maintains its natural fountain shape while growing 3 feet per year with minimal effort. Its silvery-blue foliage and arching plumes add texture and movement to your landscape, but only when given the proper growing conditions.
Let's break down exactly what your grass needs to create that thick privacy screen you've been searching for.
Growing Condition
Ideal Specification
Why It Matters
Sunlight
6+ hours of full sun daily
Maximizes growth rate and maintains vibrant silvery-blue foliage
Soil Type
Well-draining, slightly alkaline (pH 6.5-7.5)
Prevents root rot and encourages dense growth
Water Needs
1-1.5 inches weekly (deep watering)
Establishes deep roots while being drought-tolerant once established
Spacing
3-4 feet apart for privacy screen
Allows plants to fill in completely within 2-3 years
Fertilizer
Balanced 10-10-10 every 6 weeks spring/summer
Promotes vigorous growth and maintains color
Winter Care
Cut back to 6 inches in late winter
Prevents damage from heavy snow and encourages new growth
Let's start with the most critical factor: sunlight. First Knight Fountain Grass absolutely thrives in full sun conditions—think 6+ hours of direct sunlight daily. This isn't just about growth speed; the more sunlight your plants receive, the more vibrant that signature silvery-blue color will be.
I've seen dramatic differences in color intensity between plants in full sun versus partial shade—full sun wins every time for that show-stopping look.
For soil preparation, focus on creating well-draining conditions. This grass hates soggy roots, so amend heavy clay soils with compost or sand to improve drainage. A slightly alkaline pH (6.5-7.5) is ideal, which you can test with a simple soil kit.
If your soil is acidic, add lime according to package instructions before planting—this small step makes a huge difference in establishing healthy roots.
When it comes to watering, First Knight Fountain Grass is surprisingly forgiving once established. During the first year, aim for 1-1.5 inches of water weekly, focusing on deep watering rather than frequent light watering.
This encourages deep root development, making your plants more drought-tolerant over time. After the first year, you can reduce to every 10-14 days unless you're experiencing extreme heat.
The spacing strategy is what will determine how quickly you get that impenetrable privacy screen. For maximum density, plant your First Knight clumps 3-4 feet apart in rows. This might seem generous, but it gives each plant room to fill out completely within 2-3 years.
I've seen screens created in just one growing season when using this spacing, with plants touching by midsummer. For taller privacy barriers, consider staggered rows to create a more natural, layered look.
Don't overlook the power of mulching—apply a 2-3 inch layer of mulch around your plants to retain moisture and regulate soil temperature. I recommend
How to plant First Knight fountain grass for maximum density and privacy
Planting First Knight fountain grass 🌱 is your fastest route to a privacy screen that grows thick and lush without the fuss of traditional hedges. The key to achieving that impenetrable barrier lies in proper planting techniques, spacing strategies, and choosing the right companion plants to accelerate growth.
Unlike slow-growing shrubs, this ornamental grass can shoot up 3 feet per year when given the right conditions. But to maximize density, you’ll need to time your planting, prepare the soil, and arrange your plants strategically.
I’ve planted First Knight in multiple zones and found that following these steps cuts the time to a full privacy screen by nearly 50%.
Planting First Knight Fountain Grass in 5 Steps
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Step 1: Choose the Right Season
Plant in early spring (April) or early fall (September) when soil temps are 60°F+. Avoid extreme heat or frost, which stress young roots. -
Step 2: Prepare the Soil
Amend clay-heavy soil with compost or sand for drainage. Test pH—ideal range is 6.0-7.0. Avoid waterlogged spots. -
Step 3: Dig and Space Properly
Dig holes twice as wide as the root ball. Space plants 18-24 inches apart for tight clusters or 3 feet apart for a looser look. Deeper holes = faster root establishment. -
Step 4: Plant and Water Deeply
Place plants so the crown sits 1 inch above soil. Backfill with native soil, tamp gently, then water deeply (1 gallon per plant). Mulch with 2 inches of wood chips to retain moisture. -
Step 5: Add Growth Boosters
Plant companion grasses like Miscanthus or Carex nearby to fill gaps faster. Apply a slow-release fertilizer (10-10-10) at planting for a 2-month nutrient boost.
One mistake I see often is overcrowding plants to speed up growth—this actually stunts density by competing for nutrients. Instead, use the 18-24 inch spacing and focus on soil prep. I’ve seen First Knight reach 50% of its mature height in just one growing season when planted this way.
For extra speed, mix in composted manure at planting. The nitrogen boost encourages faster root spread, and the organic matter improves soil structure long-term. Just avoid fresh manure—it can burn roots and set your grass back.
After planting, monitor moisture closely for the first 30 days. Let the soil dry slightly between waterings to prevent root rot, but keep it consistently moist. In USDA Zone 6a, I’ve found that drip irrigation set to run for 20 minutes twice daily gives the best results.
With these steps, your First Knight fountain grass will grow into a privacy powerhouse in just 2-3 seasons—no trimming, no fuss, just lush, wind-resistant beauty. 🌿
