Quick Answer: The best greenhouse shade cloth for most growers in 2026 is a 40% knitted HDPE cloth with grommets, such as the Agfabric 40% Greenhouse Shade Cloth — it cools the structure, protects seedlings and vegetables, and installs in minutes. For hot, high-sun climates, upgrade to reflective Aluminet 50%, which runs a greenhouse 4–8°C cooler than black cloth at the same shade rating. Match the percentage to your crop: 30–50% for most plants, 60–70% for heat-sensitive orchids and ferns.
Shade cloth is the cheapest, fastest fix for a greenhouse that cooks your plants every summer afternoon. The trick is picking the right type and percentage — too little and seedlings scorch, too much and fruiting plants stall. Below are the shade cloths we’d actually buy, plus a plain-English guide to choosing your shade percentage.
Last updated: August 21, 2026 — re-checked Home Depot’s current Agfabric listings (individual sizes still spanning roughly $10–$40+ depending on panel size) and confirmed no active CPSC recalls on Agfabric, Aluminet, or Shatex shade cloth; picks and pricing unchanged.
Shade cloth by the numbers:
- 4–8°C cooler — how much further reflective Aluminet drops greenhouse temperature compared with black knitted cloth at the same shade rating, per Aluminet/Ginegar manufacturer data. In a hot-summer climate that gap is the difference between shading and actually cooling.
- 30–70% is the working range — industry shade guides put nearly every greenhouse crop inside this band: about 30% for sun-loving fruiting plants, 40–50% as the all-purpose default, and 60–70% for heat-sensitive orchids and ferns. Above 70% you’re costing yourself yield, not protecting it.
- 4–10 seasons of service life — knitted HDPE typically lasts 4–6 seasons, reflective Aluminet 6–8 years, and heavy woven HDPE 8–10 years, per industry guides. Taking the cloth down over winter pushes each of those toward the top of its range.
- $12–$51 — the current Home Depot listed-price spread across Agfabric’s shade-cloth sizes (6x12 ft up to 10x20 ft), confirming the 40% panel our top pick uses still falls in the ~$20–45 range this guide has quoted since launch.
Shading is only half of summer cooling — moving air is the other half. Pair the cloth with our greenhouse fan picks, and use tiered greenhouse shelving to keep trays off a hot floor.
Best greenhouse shade cloth at a glance
| Shade Cloth | Best for | Type | Shade % | Price |
|---|---|---|---|---|
| Agfabric 40% Greenhouse Shade Cloth | Best overall | Knitted HDPE | 40% | ~$20–45 |
| Aluminet 50% Reflective Cloth | Best for hot climates | Knitted reflective | 50% | ~$35–70 |
| Shatex 70% Sunblock Shade Cloth | Best heavy shade | Knitted HDPE | 70% | ~$25–55 |
| Coarbor Custom-Cut Roll | Best for big / custom builds | Knitted HDPE roll | 40–90% | ~$40–120 |
| E.share 40% with Grommets | Best budget | Knitted HDPE | 40% | ~$15–30 |
1. Agfabric 40% Greenhouse Shade Cloth — Best Overall
Agfabric 40% Greenhouse Shade Cloth
- Knitted HDPE breathes well and won't fray when cut to size.
- 40% shade — the all-around sweet spot for seedlings and vegetables.
- Reinforced edges with rust-resistant grommets every ~1.5 ft for easy tie-down.
- UV-stabilized; sold in sizes from 6x8 up to 10x20 ft.
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The Agfabric 40% is the shade cloth we recommend first. Knitted HDPE is the right construction for a greenhouse — it lets hot air escape instead of trapping it under the fabric, and the cut edges won’t unravel. Forty percent is the Goldilocks number: enough to knock down peak-afternoon heat and protect tender growth, but not so much that your tomatoes and peppers sulk. The pre-installed grommets make it a 10-minute job to lash over a hard-panel kit like our best greenhouse kit picks.
2. Aluminet 50% Reflective Cloth — Best for Hot Climates
Aluminet 50% Reflective Shade Cloth
- Woven from reflective aluminized threads that bounce radiant heat upward.
- Runs a greenhouse roughly 4–8°C (7–14°F) cooler than black cloth at the same %.
- Works reasonably well mounted inside or outside the structure.
- Longer service life than plain HDPE — typically 6–8 years.
If you garden in the Southwest, the Deep South, or anywhere summers are brutal, Aluminet earns its premium. Ordinary black cloth absorbs sunlight and re-radiates some of that heat downward; Aluminet’s metallic weave reflects it away before it becomes a problem. Shade-cloth manufacturers put the difference at 4–8°C cooler than equivalent black cloth — a meaningful gap when your greenhouse is already 15°F hotter than outside. It’s also one of the few cloths that still helps when you can only mount it on the inside.
3. Shatex 70% Sunblock Shade Cloth — Best Heavy Shade
Shatex 70% Sunblock Shade Cloth
- 70% shade for orchids, ferns, and other heat- and light-sensitive plants.
- Knitted HDPE with taped edges and grommets for a secure install.
- Also great as summer patio or kennel shade in the off-season.
- Multiple sizes with a ball-bungee tie-down option.
When 40% isn’t enough — you’re growing shade-lovers, or you’re in a desert climate where full sun is punishing — step up to 70%. Shatex’s knitted cloth blocks the majority of incoming light while still breathing, which keeps a greenhouse full of orchids or leafy shade crops from frying. Just don’t use this density over sun-hungry fruiting plants; you’ll stunt them.
4. Coarbor Custom-Cut Roll — Best for Big or Custom Builds
Coarbor Custom-Cut Shade Cloth Roll
- Sold by the foot in long rolls — cut to any greenhouse footprint.
- Available in 40%, 50%, 70%, and 90% densities.
- Heavy-duty knitted HDPE that resists fraying at cut edges.
- Best value per square foot for large or oddly shaped structures.
Pre-hemmed panels are convenient, but if you’ve got a big walk-in or a non-standard shape, buy a roll and cut your own. Coarbor’s bulk rolls give you the lowest cost per square foot and let you dial in the exact coverage — full roof only, or the whole structure. Because it’s knitted, the cut edges hold up without hemming, though a run of grommet tape makes tie-down cleaner.
5. E.share 40% with Grommets — Best Budget
E.share 40% Shade Cloth with Grommets
- Same 40% knitted-HDPE spec as our top pick at a lower price.
- Grommets pre-installed for immediate tie-down.
- Small-to-medium sizes ideal for mini and compact greenhouses.
- Lightweight and easy to remove for winter storage.
For a mini or small greenhouse, you don’t need much cloth — and E.share covers it cheaply. You give up a little edge reinforcement versus the Agfabric, but the core spec is the same knitted 40% HDPE, and for a compact structure it’s plenty. It’s the low-risk way to see whether shade cloth solves your overheating before you invest in Aluminet.
What shade percentage do you need?
The single most important choice is the shade percentage — and it depends on your crops, not your greenhouse:
- 30% — sun-loving fruiting plants (tomatoes, peppers, melons) in mild climates that just need the edge taken off.
- 40–50% — the all-around default for mixed vegetables, seedlings, and most home greenhouses. Start here if unsure.
- 60–70% — heat-sensitive plants (orchids, ferns, lettuce in summer) or very hot, high-sun regions.
- 80–90% — deep shade for shade-house crops or people/pet areas; too much for most greenhouse growing.
Industry guides agree that 30–70% is the useful range for greenhouse growers, with 40–50% the safest default. When in doubt, under-shade — you can always add a second layer, but you can’t give plants back light you’ve blocked. Growing orchids specifically? Our greenhouse for orchids guide covers the full temperature and humidity picture alongside the shade numbers here.
How to choose greenhouse shade cloth
- Type: go knitted, not woven. Knitted HDPE breathes and won’t unravel when cut — the right call for an enclosed structure. Save woven cloth for permanent outdoor shade sails.
- Mount it outside. Blocking sun before it hits the glazing is what actually cools the greenhouse. Reflective Aluminet is the only cloth that works well inside.
- Match the climate. Black knitted cloth for mild summers; reflective Aluminet where heat is severe.
- Size for tie-down. Buy a panel with grommets, or add grommet tape to a roll, and use ball bungees so wind can’t tear it loose.
- Pair it with airflow. Shade cloth and ventilation work together — a roof vent or a greenhouse fan plus shade beats either one alone. Our greenhouse ventilation guide covers how to size vents, openers, and fans for your structure.
The bottom line
The Agfabric 40% knitted shade cloth is the best greenhouse shade cloth for most growers — the right construction, the right percentage, and easy grommet install. Upgrade to reflective Aluminet 50% in hot climates for that 4–8°C cooling edge, go to Shatex 70% for shade-lovers, buy a Coarbor roll for big custom builds, or save with E.share on a compact greenhouse. Get the percentage right for your crops and mount it outside, and a $30 sheet of cloth can save an entire summer’s harvest. Ordering more season-extension gear? See whether Amazon Prime is worth it for the free two-day shipping. And if you’re still choosing the structure itself, a diffusing twin-wall roof does some of this work for you — see our best Palram greenhouse comparison. Shade cloth blocks the sun; a greenhouse misting system adds active evaporative cooling on top of it for the hottest afternoons. Growing a herb bench under that cloth? Our greenhouse for herbs guide covers why Mediterranean herbs and tender herbs like basil need very different light and water routines. Protecting cut flowers instead? Our greenhouse for flowers guide covers the lighter 30–50% density that preserves bloom color better than the heavier percentages this guide recommends for shade-loving crops. Growing something that wants no direct sun at all? Our greenhouse for mushrooms guide covers a crop where a scrap of this cloth over a shaded corner matters more than any percentage chart here.