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Old Cobblers Farm™ Wicked Tuff Turf Hillside Stabilizer
Mix

Multi-species blend

Erosion control seed blend for slopes, banks, and disturbed soil. 16% nitrogen-fixing legumes + deep-rooting grasses. Zero-fertilizer once established. USDA Zones 3-7.

An erosion-control blend engineered for slopes, banks, and disturbed soil where establishment is difficult and permanent stabilization is critical. Unlike ornamental lawn mixes, this formula prioritizes root development, soil binding, and survival in challenging conditions over appearance. The 16% legume content (Alsike Clover + Empire Birdsfoot Trefoil) provides nitrogen fixation that sustains the stand on poor soils without fertilizer access. Empire Birdsfoot Trefoil drives a 3-4 foot taproot that anchors soil on slopes no lawn grass can match.

Erosion Control Mix

Old Cobblers Farm™ Wicked Tuff Turf Hillside Stabilizer

5

Minimum Germination

Max: 35 Days

Root Depth : Birdsfoot Trefoil: 3-4 feet taproot. Creeping Red Fescue: 2-4 inches. Perennial Ryegrass: 3-4 inches fibrous.

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Maintenance Level : Very Low (once established)

6-8 lbs per 1,000 sq ft (steep slopes >30%: 8-10 lbs; hydroseeding: 100-150 lbs per acre)

Seed Rate

Growing Specifications

Know Your Seed

Detailed specifications to help you grow successfully

Soil Type

Adaptable; specifically selected for challenging conditions including clay, compacted soil, and disturbed ground

Preferred soil composition

Nitrogen Needs

0-1 lb N per 1,000 sq ft (16% legume content fixes atmospheric nitrogen; established stands typically require no fertilizer)

Annual nitrogen requirements

Root Depth

Birdsfoot Trefoil: 3-4 feet taproot. Creeping Red Fescue: 2-4 inches. Perennial Ryegrass: 3-4 inches fibrous.

Maximum root penetration

Growth Habit

Not specified

Plant growth pattern

Soil pH

5.5-7.0

Optimal pH range

Germination Temp

50°F

Ideal germination temperature

Establishment

Not specified

Time to full establishment

Maintenance

Very Low (once established)

Required maintenance level

Complete Overview

The Complete Guide to Erosion Control Mix

Best planted late August through October (zones 4-6). Spring planting (April-May) also effective. Fall planting preferred for slopes—natural fall rains reduce need for manual watering on inaccessible grades. Dormant seeding (November-December) acceptable for spring establishment.

Germination Timeline

5–35 days to germination

Days 5-10: Perennial Ryegrass emerges. Days 7-14: Redtop appears. Days 14-21: Creeping Red Fescue and Alsike Clover visible. Days 21-35: Birdsfoot Trefoil establishes (slow to germinate but persistent once established).

Establishment Timeline

Initial erosion protection: 2-4 weeks. Root system development: 3-6 months. Full stabilization: 12-24 months (Birdsfoot Trefoil taproot development).

Application Guide

Is It Right for You?

Best For

Lawns and turf areas seeking natural nitrogen fixation

Pasture renovation and livestock grazing

Wildlife food plots and habitat restoration

Erosion control on slopes and disturbed soil

Cover cropping and green manure programs

Not Ideal For

Heavy foot traffic areas like sports fields

Extremely acidic soils below pH 5.5

Deep shade locations with less than 4 hours sunlight

Waterlogged or poorly drained clay soils

Planting Guide

How to Plant

Application Rates

Seeding & Mowing

New Seeding Rate

Per acre

8-10 lbs per acre for pure stands, or 2-4 lbs per acre when mixed with grasses

Overseeding Rate

Per acre

4-6 lbs per acre into existing pasture or lawn

Recommended height
4-6"

Optimal height for healthy growth

Minimum height
3"

Never mow below this height

First mow height
6-8"

Initial establishment mowing

Got Questions?

Frequently Asked

    [{"question":"What is the Hillside Stabilizer seed mix and what is it designed for?","answer":"The Wicked Tuff Turf Hillside Stabilizer (New Hampshire Slope 44) is an erosion-control seed blend engineered for slopes, banks, and disturbed soil where establishment is difficult and permanent stabilization is critical. It contains 43% creeping red fescue, 33% perennial ryegrass, 8% redtop, 8% alsike clover, and 8% Empire birdsfoot trefoil. Unlike ornamental lawn mixes, this formula prioritizes root development, soil binding, and survival in challenging conditions over appearance."},{"question":"What slope grades can the Hillside Stabilizer handle?","answer":"The Hillside Stabilizer works on slopes from 15% to 50%+ grade. Establishment method varies by steepness: 15-30% grade can be seeded, raked, and rolled with optional erosion blanket. 30-50% grade should use erosion control blanket stapled at 1-foot intervals or hydroseeding. Slopes exceeding 50% require hydroseeding with tackifier—broadcast seed alone will wash away before germination. Seed at 6-8 lbs per 1,000 sq ft for standard slopes, increasing to 8-10 lbs for steep slopes."},{"question":"Why does the Hillside Stabilizer contain redtop grass?","answer":"Redtop (Agrostis gigantea) is included for its ability to establish on wet, acidic, compacted, and disturbed soils where finer turfgrasses fail. Redtop spreads aggressively via stolons and rhizomes—a weakness in ornamental lawns but a critical strength for erosion control. It colonizes bare, difficult ground faster than most grasses, providing immediate soil stabilization while slower species (fescue, trefoil) develop. Redtop is rarely used in lawn mixes but is invaluable for stabilization applications."},{"question":"Does the Hillside Stabilizer need fertilizer after establishment?","answer":"Minimal to none. The 16% legume content (8% alsike clover + 8% Empire birdsfoot trefoil) fixes atmospheric nitrogen at 80-150 lbs per acre annually, sustaining the grass components without synthetic fertilizer. A low-nitrogen starter fertilizer (high phosphorus) at planting aids initial establishment, but established stands on slopes typically require zero ongoing fertilization. This self-sustaining characteristic is essential for slopes where fertilizer application is impractical or impossible."},{"question":"How long does the Hillside Stabilizer take to fully stabilize a slope?","answer":"Initial erosion protection begins within 2-4 weeks as perennial ryegrass and redtop provide surface coverage. Root system development reaches functional stability within 3-6 months. Full stabilization—including birdsfoot trefoil's deep taproot anchoring (3-4 feet deep)—takes 12-24 months. The establishment period is the most vulnerable window; erosion control blankets protect the slope during this critical phase. Once fully established, the stand is self-sustaining with minimal maintenance."},{"question":"Does the Hillside Stabilizer need to be mowed?","answer":"No. The Hillside Stabilizer is designed to perform without mowing. Many slope applications are physically impossible to mow safely. Unmowed, the stand stabilizes at 8-18 inches depending on which species dominate—birdsfoot trefoil produces yellow flowers (May-September) and redtop produces loose, reddish seed heads. The appearance is naturalized rather than manicured. If mowing is desired, cut to 3.5-4.5 inches infrequently (2-4 times per season)."},{"question":"What are the best applications for the Hillside Stabilizer mix?","answer":"Primary applications include residential slopes and banks over 15% grade, highway and road cuts and fills, retention pond banks and swales, stream banks above normal water level, construction sites requiring permanent erosion control, ditches and drainage channels, dam faces, and any disturbed soil requiring stabilization with minimal ongoing maintenance. It is not suitable for flat ornamental lawns (it will look weedy with redtop and legume flowers), high-visibility areas expecting manicured turf, or high-traffic paths."}]

Ready to Grow Erosion Control Mix?

Multi-species blend

Old Cobblers Farm™ Wicked Tuff Turf Hillside Stabilizer