Width range
14–34 ft
Length sized to your site
CT Greenhouse high tunnels are NRCS-eligible, built to CPS 325 · see how EQIP funding works
The right start
Grower Series High Tunnels, sized for the market garden.
Every Grower starts with the same commercial-grade frame we build into the Plus and Pro. The difference is simplicity: everything you need to get a high tunnel up and growing, with doors, ventilation upgrades, and other accessories added on your own timeline.
A starting point, not a box: width, length, height, end walls, and hardware all configure to your operation.
NRCS-eligible
Fully customizable
Farmer-owned
Main bow tubing
1.9" 13-ga
Galvanized steel, bolted connections
Top covering
Single-layer 6-mil
Inflated double layer available
Make it yours
Every build starts from your farm.
Grower, Grower Plus, and Grower Pro are options, not fixed models: each kit is configured around your crops, your weather, and your plans.
Dimensions
Width, length, and peak height sized to your field layout and equipment.
End walls & doors
Hinged or sliding, sized for tractors, carts, or foot traffic.
Ventilation & sides
Roll-up sides with a 5:1 locking gear crank; powered ventilation where the crop calls for it.
The numbers
Specs, with the lineup for context.
Your structure highlighted against its siblings. Every number here is a starting point; all four configure to your site.
| Specification | Grower | Grower Plus | Grower Pro | Powerhouse |
|---|---|---|---|---|
| Main bow tubing | 1.9" 13-ga galvanized | 1.9" 13-ga galvanized | 1.9" 13-ga galvanized | 1.9" 13-ga galvanized |
| Purlins | 1.315" 16-ga | 1.315" 16-ga | 1.315" 16-ga | 1.315" 16-ga |
| Hardware | Grade 5 bolts, wirelock hip boards | Grade 5 bolts, wirelock hip boards | Grade 5 bolts, wirelock hip boards | Grade 5 bolts, wirelock hip boards |
| Width range | 14–34 ft | 14–34 ft | 14–34 ft | 14–34 ft |
| Top covering | Single-layer 6-mil | Double-inflated 6-mil | Double-inflated 6-mil | Double-inflated 6-mil |
| End walls | Steel-framed, 6-mil poly | Steel-framed, 8mm twin-wall polycarbonate | Steel-framed, 8mm twin-wall polycarbonate | Configured with you |
| Doors | Not included | 8'×7' double hinged | 8'×7' double sliding | Configured with you |
| Roll-up sides | Manual, 5:1 gear crank | Manual, 5:1 crank, bug netting | Manual, 5:1 crank, bug netting and woven roll-up material | Configured with you |
| Peak vents | Add-on | Automatic, no power needed | Automatic, no power needed | Configured with you |
| Baseboards | Hardware for local lumber | Hardware for local lumber | Steel + polycarbonate system | Configured with you |
| Trellis | Add-on | Add-on | Cable support system included | Configured with you |
In the kit
What shows up on your truck.
- Frame: 1.9" 13-gauge galvanized main bows with a 16-gauge truss on every bow, 1.315" 16-gauge purlins and ridge, 1.75" 14-gauge square end wall framing, and ground posts.
- Hardware: Grade 5 bolts at every major connection, stainless steel wiggle wire and self-tapping screws, and aluminum double wirelock hip boards.
- Covering: a single layer of 6-mil, 4-year UV-rated greenhouse plastic, with steel-framed end walls covered in the same film.
- Roll-up sides: 5:1 locking gear-crank operators and aluminum fabric clips, plus corner wind braces.
- Baseboard hardware: everything needed to attach locally sourced lumber (we recommend 2x10s). Doors are an add-on on the Grower.
- Build guidance: written assembly instructions, and an owner on the phone when you need one.
Planning to apply for EQIP cost-share?
This structure is designed to meet NRCS Conservation Practice Standard 325, and we supply the documentation your application needs. Eligibility and cost-share rates vary by state, and we'll point you to yours.
Common questions
Asked about this structure.
Let's configure your build.
Tell us about your operation and an owner will come back with real numbers for your site, including how EQIP cost-share might factor in.
(860) 341-8707 · info@ctgreenhouse.com
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