What does Crafted in California mean at T3 Greenhouse Supply?

It means every greenhouse we build is designed and fabricated in our Shasta Lake, California shop. Each project is made in-house to ensure strength and quality.

Are T3 greenhouses really made in the USA?

Yes. We use U.S.-sourced steel and materials, and every frame is built by our own team in California.

Why choose a greenhouse crafted in California?

California’s climate demands durability. Our designs are tested to handle heat, wind, and heavy use, giving you a structure built to last.

Does T3 Greenhouse Supply offer custom designs?

Yes. We design each greenhouse to match your crop type, local weather, and growing goals using CAD precision and CNC fabrication.

What systems can be included in my greenhouse?

We offer light-deprivation systems, climate control, irrigation, and automation packages — all built to make growing easier and more productive.

Do you ship your greenhouses outside California?

Yes. Although our greenhouses are made in California, we ship nationwide and support growers across the U.S.

Crafted in California

Crafted in California : Welding a Greenhouse Frame

T3 Greenhouse Supply

Custom Greenhouses & Light Deprivation Systems Built for Serious Growers

To begin with, t3 Greenhouse Supply is a leading American builder of custom greenhouses and light deprivation systems. We also build agricultural steel structures. In fact, we proudly serve both commercial growers and residential growers across the United States. Moreover, with 20 years of industry experience, we specialize in custom-built light dep greenhouses, automated blackout systems, rolling benches, processing rooms, carports, and off-grid solar greenhouse kits. Notably, we build all our projects in-house at our modern metal shop in Shasta Lake, California.

In addition, our advanced CNC-controlled machinery and experienced buiding team work side by side. In turn, they produce carefully-crafted greenhouse frames and accessories, customized to your crop type, regional climate, and budget. As a result, from urban backyard growers to large-scale hemp farms, we deliver performance, durability, and efficiency every time.

Furthermore, with attention to every detail, we turn your vision into reality with:
✅ Engineered greenhouse design & CAD services.
✅ Custom light deprivation automation packages.
✅ Fast production & nationwide delivery.
✅ Personalized support from real growers.

Ultimately, whether you’re growing vegetables, flowers, or hemp—indoors or out—our proven knowledge and streamlined production process make T3 Greenhouse Supply the trusted choice for growers who demand the best.

Crafted in California : Greenhouse ribs on truck, Mt Shasta in the background

Crafted in California : Welding a greenhouse frame in the T3 Greenhouse Supply Manufacturing Shop

crafted in california : Images from the T3 Greenhouse Supply Manufacturing Shop

Custom Greenhouse fabrication & Design

Above all, T3 Greenhouse Supply builds carefully-built greenhouses for commercial farms, urban growers, and backyard gardens. To this end, our modern fabrication shop features advanced computer-controlled machinery. Likewise, our expert team works closely with you to design a greenhouse that fits your exact needs—whether that’s year-round vegetable production, flower cultivation, or light deprivation hemp farming.

After approval, once you approve the plans, we begin building. As a result, each structure is built for strength, energy saving, and decades of reliable performance. Additionally, we design every project to optimize plant growth, with options for automated light deprivation systems, climate control, and irrigation automation.

Why Choose T3 Greenhouse Supply?

For instance, from indoor grow operations to outdoor high-tunnel farming, our deep industry knowledge, proven engineering, and fast production times stand out. Therefore, these strengths put us at the forefront of greenhouse building. Instead, we don’t just build structures. Rather, we create growing spaces that help you maximize yields, extend your growing season, and protect your investment.

Crafted in California — T3’s Fabrication Shop

Specifically, here you can see some of our equipment and team members at work, crafting greenhouses in California. For example, click the first image to open a larger version. Afterward, you can scroll through the images.