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Commercial-Grade Crop Protection

Frost Blankets & Row Covers

Our frost blankets and row covers are professional-grade crop protection fabrics trusted by commercial growers, nurseries, and large-scale agricultural operations. Unlike the lightweight options sold at box stores, our spunbound polypropylene blankets are available in commercial roll sizes — from narrow 6’ wide strips to 50’ wide field covers — with seams that are sewn, not glued, for long-term durability.

Shop all 6 weights Find my weight →
0.5–6 ozSix weights in stock SewnSeams, not glued 3–5Seasons of use FreeShipping on all orders
Six Weights In Stock

Choose your level of protection

Every blanket allows water and air to pass through, so plants breathe and stay hydrated even when covered for weeks at a time. Free shipping on all orders.

Frost Blanket - Row Cover - .5 oz
Lightest
0.5 ozRow Cover

Frost Blanket - Row Cover - .5 oz

Our Frost Blanket - Row cover .5 oz is a crop protection and over-winterized fabric that keeps temperatures under fabric warmer than outside condit…

from $289.88
Protectionup to 2°F
Light~90%
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Frost Blanket - Row Cover - 1 oz
Most Popular
1 ozRow Cover

Frost Blanket - Row Cover - 1 oz

Our Frost Blanket - Row cover 1 oz is a crop protection and over-winterized fabric that keeps temperatures under fabric warmer than outside conditi…

from $242.40
Protectionup to 4°F
Light~75%
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Frost Blanket - Row Cover - 1.5 oz
Heavy
1.5 ozRow Cover

Frost Blanket - Row Cover - 1.5 oz

Our Frost Blanket - Row cover 1.5 oz is a crop protection and over-winterized fabric that is ideal for protecting flowering annuals, bedding plants…

from $572.29
Protectionup to 6°F
Light~50%
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Frost Blanket - Row Cover - 2.5 oz
Overwintering
2.5 ozRow Cover

Frost Blanket - Row Cover - 2.5 oz

Our Frost Blanket - Row cover 2.5 oz is a crop protection and over-winterized fabric that provides freeze protection or greater plant protection du…

from $392.98
Protectionup to 8°F
Light~30%
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Frost Blanket - Row Cover - 4 oz
Heavy Duty
4 ozRow Cover

Frost Blanket - Row Cover - 4 oz

Our 4 oz frost blanket delivers freeze protection and extended cold-weather coverage, holding in heat while staying permeable to air and water for f…

from $1,273.66
Protectionup to 10°F
Light—
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Frost Blanket - Row Cover - 6 oz
Maximum
6 ozRow Cover

Frost Blanket - Row Cover - 6 oz

Our 6 oz frost blanket is built for severe cold and all-winter coverage of perennials, shrubs, and ornamentals, letting air, rain, and irrigation p…

from $1,457.34
Protectionup to 12°F
Light—
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Spec Comparison

Frost Blankets & Row Covers for Professional Plant Protection

We carry six weights to match your level of frost protection needed: 0.5 oz (extended-season and germination), 1 oz (all-purpose row cover), 1.5 oz (heavy frost and shrub protection), 2.5 oz (full-winter overwintering), 4 oz (hard freezes and extended cold-weather coverage), and 6 oz (severe cold and all-winter coverage). Every blanket allows water and air to pass through, so plants breathe and stay hydrated even when covered for weeks at a time. Free shipping on all orders.

WeightFrost ProtectionLight TransmissionBest UseSeason
0.5 ozLightest
 up to 2°F
~90%
 Seed germination, seedling establishment, extended season Spring / Fall — leave on continuously
1 ozPopular
 up to 4°F
~75%
 Vegetables, row crops, flowering annuals, bedding plants Spring / Fall — extended use
1.5 ozHeavy
 up to 6°F
~50%
 Hard freezes, established shrubs, perennials, ornamentals Fall / Early winter
2.5 ozOverwintering
 up to 8°F
~30%
 Full winter overwintering, trees, dormant perennials, extreme cold All winter — leave in place
4 ozHeavy Duty
 up to 10°F
—
 Hard freezes, flowers, shrubs and ornamentals; nursery and commercial use Fall / Winter — extended cold-weather coverage
6 ozMaximum
 up to 12°F
—
 Severe cold; perennials, shrubs, ornamentals; commercial, landscape and nursery All winter — leave in place
By Application

What Are You Protecting?

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Seed Germination & Seedlings

Spunbound fabric creates a warm microclimate that boosts germination rates up to 90–95% versus 60–65% with straw. Allows full light and irrigation through.

Recommended: 0.5 oz Row Cover
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Vegetables & Row Crops

Extend your harvest season weeks into fall and start earlier in spring. Protects tomatoes, peppers, lettuce, brassicas, and other crops from moderate frost.

Recommended: 1 oz Row Cover
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Shrubs & Ornamentals

Protect established shrubs, perennials, and flowering ornamentals from hard freeze events. Heavier weight holds in more ground heat during extended cold snaps.

Recommended: 1.5 oz Row Cover
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Trees & Full-Winter Overwintering

Keep citrus, fig, and other cold-sensitive trees alive through hard freezes. The 2.5 oz weight is designed to be left in place all winter on dormant plants.

Recommended: 2.5 oz Row Cover
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Nursery & Commercial Cold Snaps

The 4 oz weight holds in heat through hard freezes while staying permeable to air and water — built for residential, commercial, and nursery operations that need extended cold-weather coverage.

Recommended: 4 oz Row Cover
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Severe Cold & All-Winter Coverage

The 6 oz is the heaviest weight we stock — for perennials, shrubs, and ornamentals that have to sit through a severe winter without being smothered. Rain and irrigation still pass through.

Recommended: 6 oz Row Cover
Not Sure Which Weight You Need?

Frost Blanket Selector

Use our interactive selector below — answer 3 quick questions and we'll match you to the right frost blanket weight for your application.

Step 1 of 3

What is your primary use?

How severe are your frost conditions?

How long will the blanket be in place?

Your Recommendation
1 oz
All-purpose row cover
Shop this weight
Good to Know

Frost Blanket & Row Cover FAQ

What is the difference between a frost blanket and a row cover? ⌄
Frost blankets and row covers are the same product — just different names for spunbound polypropylene fabric used to protect plants from cold. "Row cover" typically refers to the same fabric used over planting rows in a growing season context, while "frost blanket" implies protection during freeze events. Both work the same way: trapping ground heat and blocking cold air while allowing light, water, and airflow through the fabric.
How much frost protection does each weight provide? ⌄
The heavier the fabric, the more frost protection it provides: the 0.5 oz cover provides up to 2°F of protection, the 1 oz up to 4°F, the 1.5 oz up to 6°F, the 2.5 oz up to 8°F, the 4 oz up to 10°F, and the 6 oz up to 12°F. These figures assume the fabric is laid directly over or around the plant with edges secured to trap ground heat. Elevating the fabric on hoops increases airspace but can slightly reduce heat retention.
What is the difference between the 4 oz and 6 oz blankets? ⌄
Both are heavy plant protection fabrics. The 4 oz is built for freeze protection and extended cold-weather coverage of flowers, shrubs, and ornamentals through hard freezes. The 6 oz steps up to severe cold and all-winter coverage of perennials, shrubs, and ornamentals. Both hold in heat while staying permeable to air, rain, and irrigation, and both are reusable and UV-resistant for commercial, landscape, and nursery use. They stock in 12’ × 250’ and 15’ × 250’ rolls.
Can I leave frost blankets on during the day? ⌄
It depends on the weight. Our 0.5 oz and 1 oz row covers are designed to be left on continuously — they transmit 75–90% of available light so plants grow normally underneath. The heavier 1.5 oz and 2.5 oz covers reduce light significantly (50% and 30% transmission respectively), so for actively growing plants these should generally be removed on sunny days or whenever temperatures are above freezing. The 4 oz and 6 oz weights block the most light of anything we carry and are intended for dormant plants or short-duration freeze events rather than continuous cover over actively growing crops.
Does water pass through frost blankets? ⌄
Yes — all of our frost blankets allow irrigation and rain to pass through the fabric, so plants don't need to be uncovered for watering. This is one of the main advantages of spunbound polypropylene over plastic sheeting, which would trap heat, burn plants on sunny days, and require removal for irrigation.
How many seasons will a frost blanket last? ⌄
With proper care, our frost blankets typically last 3–5 seasons. The fabric includes UV inhibitors to resist breakdown from sun exposure. To maximize lifespan, store rolled or loosely folded in a cool, dry place during the off-season and avoid dragging across rough surfaces. The 2.5 oz, 4 oz, and 6 oz covers are the most durable and designed for repeated multi-season use.
What sizes are available? ⌄
We stock frost blankets in widths from 3’ to 50’ and lengths from 100’ to 2,000’. Commercial growers can order large rolls like 36’ × 1,000’ or 50’ × 1,000’ for field-scale applications. Homeowners and smaller operations will find sizes like 7’ × 100’ or 12’ × 300’ more practical. The 4 oz and 6 oz weights come in 12’ × 250’ and 15’ × 250’ rolls — the 12’ ships folded to 6’ and the 15’ ships folded to 7.5’. All seams are sewn (not glued) for added strength at the fold lines.
The Pro Fabric Difference

Why Buy from Pro Fabric Supply?

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Commercial-Grade Quality

Professional spunbound fabric with sewn seams — not the glued, lightweight versions sold at garden centers.

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Free Shipping

Free shipping on all orders, including large commercial rolls that other suppliers charge freight on.

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All 6 Weights In Stock

0.5 oz through 6 oz available in multiple widths and lengths for any application size.

☀️
UV-Stabilized Fabric

Built-in UV inhibitors protect the blanket from breaking down in sunlight — lasting multiple seasons.

Need a field-scale roll or a custom size?

Talk to a fabric specialist about commercial widths up to 50’ and lengths to 2,000’.