Can it grow food year-round?

With proper thermal mass and optional heating, the Agrosphere extends growing seasons significantly — even in cold climates.

What glazing options are available?

Polycarbonate twin-wall panels (standard), single-pane glass, or double-pane glass for maximum insulation.

How much growing space does it provide?

The standard configuration provides approximately 120 square feet of growing area with vertical growing options.

Agrosphere™ — Modular Greenhouse Kit

Why Build a Greenhouse?

Commercial greenhouses cost $25–$35 per sq ft installed. Hoop houses blow apart in wind. Traditional builds are permanent — you cannot move them when you move. The Agrosphere is a modular year-round greenhouse you build from standard lumber. 80 sq ft, trailer-mountable, grows food at -20°F.

What You Get

Everything you need to go from idea to finished structure

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Construction Plans

Complete cut lists, assembly sequences, and connection details for every module in your chosen product.

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Bill of Materials

Exact quantities and dimensions for every piece of lumber, fastener, and material you need to buy.

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3D Configurator Access

Design your layout in our free 3D configurator. Experiment with module combinations before you cut a single board.

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Builder Network

Connect with local lumber yards and builders. Share your design, get real quotes, find people who can help.

How It Works

Design

Configure your layout in the free 3D tool. Choose modules, materials, and placement.

Plan

Get your bill of materials, cut list, and assembly sequence. Order materials locally.

Build

Follow the step-by-step handbook. Standard tools, standard lumber, no special skills.

Why Agrosphere?

Four-Season Growing

Twin-wall polycarbonate glazing and passive solar design. Grow food year-round, even at -20°F.

Passive Ventilation

Configurable vent panels regulate temperature and humidity. No powered ventilation required.

Trailer-Mountable

Take your greenhouse with you. Standard flatbed compatible, fully relocatable.

Technical Specifications

Growing Area	~80 sq ft usable (with walkways)
Growing Season	Year-round (maintains 65-75°F at -20°F outside)
Annual Yield	50 - 100 kg of greens (110 - 220 lbs)
Water Efficiency	80 - 90% recirculation (hydroponic + drip)
Panels	Transparent polycarbonate for natural light
Growing Systems	Vertical hydroponic towers + soil beds
Foundation	Trailer-mounted or permanent fixed
Materials Budget	$5,000 - $9,000 (including glazing, HVAC, and grow systems)

Engineering Views

👤 Designed by Peter Bartsch 20 years in product design

🏢 John Deere · FourKites · Nokia HERE

📜 CERN Open Hardware License v2 Modify, share, and improve freely

🪵 Standard Dimensional Lumber From any hardware store

Get the Complete Build System

Step-by-step handbook, cut lists, material specs, and assembly guides — plus lifetime updates and community access. From $29.

See Pricing & Editions

30-day money-back guarantee · Open-source license included

Get Quotes from Local Builders

Design your configuration in our free online tool, then get material quotes from suppliers near you.

Design & Get Quotes

Builder Tools

Everything you need to build with precision — from templates to jigs.

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Available

MDF & Paper Templates

Precision CNC-cut MDF routing guides and full-scale paper patterns for accurate fabrication.

View Templates →

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Coming Soon

3D-Printable Jigs

Download STL files for assembly jigs, alignment tools, and drilling guides. Print at home.

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Coming Soon

Drop-Ship Jig Kits

Professional-grade steel and aluminum jigs shipped directly to your door.

Frequently Asked Questions

Leafy greens (lettuce, spinach, kale, herbs) thrive year-round with hydroponics. Fruiting crops like tomatoes, peppers, and cucumbers do best in spring through fall but can extend into winter with supplemental LED lighting.

The transparent polycarbonate panels maximize natural light. In northern latitudes, supplemental LED grow lights (full-spectrum, 200-400W total) keep plants productive through short winter days. The handbook includes lighting layout recommendations.

A small HVAC unit or exhaust fan system maintains temperature. Humidity is managed through ventilation and dehumidification. The enclosed geodesic structure retains heat efficiently, reducing heating costs compared to traditional greenhouses.

Absolutely. The Agrosphere is designed for vertical hydroponic towers in the center and soil beds along the perimeter. The curved walls create ideal space for tiered growing. Water recirculation achieves 80-90% efficiency.

No. The trailer-mounted option lets you position the greenhouse seasonally or move it to follow sunlight. For year-round growing with plumbing, a permanent foundation works better. The handbook covers both options.

OPEN SOURCE HARDWARE

The Thiosphere™ SDK, the foundation to all our products, is open source hardware. In fact, all Thios products are. Specifically the CERN Open Hardware Licence Version 2 - Strongly Reciprocal.

That's a fancy way of saying that if you want to use our design, even for commercial purposes, you have to share your changes with everyone else.

Learn More

Why Build a Greenhouse?