A compact redwood greenhouse kit with big growing potential.

The Trillium is our most compact freestanding greenhouse for limited space—ideal for productive gardening in tight backyards, patios, or urban settings.

Handcrafted in Oregon from premium redwood, this small wooden greenhouse delivers big growing potential in a beautifully space-efficient design.

Included With Your Trillium Greenhouse Kit

Durable, High-Quality Construction

• 18″ redwood basewall with Brazilian cedar trim and built-in screened vents — combines strength, beauty, and natural airflow

• 6mm twin-wall polycarbonate roof — superior insulation and energy efficiency for year-round growing

• 1/8″ annealed glass walls — exceptional clarity and maximum light transmission

• Engineered for 35 PSF snow load and 75 MPH wind speeds — optional All-Weather Kits available for harsher climates

Ventilation & Climate Control

• Solar-powered roof vent(s) with integrated screens — hands-free, automated ventilation

• Screened jalousie window and basewall vents — adjustable airflow and pest protection

• Fully screened ventilation — roof and sides — promotes healthy air circulation while keeping pests out

• Interior gutters with drainage tubing — manages condensation and protects the structure

Convenient, Customizable Entry

• Full-Lite hinged door (24″ wide × 6′-6″ tall) with tempered glass — blends durability with maximum light entry

Easy, Efficient Installation

• Preassembled gable ends, roof, and side walls — faster, easier assembly

• Printed and digital installation manuals — clear, step-by-step guidance

Customize Your Trillium Greenhouse

Basewall Options
Choose our matching 18″ redwood basewall kit or build your own custom masonry base for added style and insulation. [Learn more →]

Thermal Option™
Upgrade to our exclusive double-glazing system for improved warmth, diffused light, and energy savings in cooler climates. It's the perfect way to enhance a compact redwood greenhouse kit for year-round comfort—even in colder climates. [Learn more →]

Plant Benches
Handcrafted redwood benches designed to maximize growing space and enhance greenhouse organization. [Learn more →]

Garden Kit
A complete set of tools to control airflow, temperature, and humidity for healthier plant growth. [Learn more →]

All-Weather Kit
Added reinforcement for snow and wind-prone regions—engineered for higher loads without altering the Trillium’s clean design. [Learn more →]

Purchase

Ready to purchase The Trillium? The prices shown online include credit card and processing fees, but when you order directly through us, you’ll pay less.

Give us a call at (503) 244-4100 and one of our friendly sales experts will prepare an emailed estimate. We’ll help you customize the perfect size and features to match your gardening needs—and ensure you receive the lowest cost available on your new greenhouse.

Every Trillium is a handcrafted greenhouse made in Oregon, backed by decades of craftsmanship and direct-to-customer service. Learn about designing the perfect small greenhouse for home gardens.

Shipping & Delivery Information

Each Trillium greenhouse is handcrafted in Oregon and carefully packaged for delivery across the contiguous U.S. and Canada, with detailed instructions for safe, straightforward installation.