HIGHTUNNELS

1.What is a HighTunnel?
A Hightunnel is a solar heated greenhouse 'Usually' with no electrical or automated ventilation that is used to extend the crop production season for many horticulture crops. Crops that are produced within high tunnels are grown in the ground or in raised beds with drip irrigation. Greenhouses are heated systems that have foundations and are energy dependent whereas a Hightunnel utilizes Passive Solar. 2. Do I need to have a building permit for my HighTunnel?
High tunnels are considered to be impermanent structures and protected under the "Right to Farm Act." Nevada County has determined that no permit is needed for farmers installing a Hightunnel.
2. How does a low tunnel differ from a HighTunnel?
In a nutshell, you can stand upright in even an inexpensive high tunnel, but low tunnels are too short. Basically, low tunnels can be constructed by placing wire hoops, spaced 3 to 4’ apart and about 1.5’ high at the apex, over a row of crop to provide additional protection from the cold. A new practice that has shown success is to place a low-tunnel inside of a Hightunnel.
3. Where should I place a Hightunnel on my farm?
A Hightunnel should be placed on a level, well-drained, accessible site. BUT, many choose to build their Hightunnels on a slope or grade.
4. Should I grow vegetables in a Greenhouse or a Hightunnel?
Input costs for Greenhouse vegetable production are significantly higher relative to Hightunnel vegetable production. Greenhouses cost approximately $6-$12 sq ft or almost five times the cost of a Hightunnel.
10. What is the optimal orientation for a high tunnel?
Unlike greenhouses, orienting a High-tunnel for sunlight is not as crucial as long as the the Hightunnel gets ample sun. Although having the long side facing south is best if you are going to"force Flowering". In a windy location a Hightunnel should be oriented in a direction that faces the Endwall toward the prevailing winds

BE SURE TO NEVER LEAVE THE DOORS OPEN ON WINDY DAYS!

Remember, all ventilation is manual, or passive solar- so you depend on the wind to ventilate your house. In the Foothills, our winds are predominantly from the North -Northwest. Thus, for spring tomato production, we find an North-South orientation to be optimal.

Grizzly Hill Greenhouses offers a site consulation- because your sites' needs may be unique.

8. Can a hightunnel be movable?
Yes. One of the primary objectives of a high tunnel is to expand the harvest
period. our Cold Frames are the best solutions for building a movable system. However, movable Hightunnels are moved on to existing plots of land to accelerate growth or extend the growing season for that crop. However, relative to stationary Hightunnels, they are less airtight. Consult Eliot Coleman’s Winter Harvest Manual for additional information on design of movable high tunnels.

MORE ON HIGHTUNNELS

 

 

California Greenhouse Builds both

AGRICULTURAL and

COMMERCIAL GREENHOUSES

We provide Complete High Quality Kits for building both Cold Frames, Hightunnels and Commercial Greenhouses. These Kits are complete and include the Precision Bent Frames, State-of-the-Art Hardware and a selection Greenhouse Coverings. They are easy to construct and offer an affordable Solution to Extending your Crop Production.

COMMERCIAL GREENHOUSES

When you need a "Coded" or "Permitted" Greenhouse- We can supply you with Complete, Stamped, Engineering that you should be able to take to your Planning Department and get Approval for your Structure. Our Structures comply with OSHA requirements which is required if you plan on applying for a California CANNABIS License.

OUR AGRICULTURAL GREENHOUSES & HIGHTUNNELS

are built to increase your production and reduce your costs our

AGRICULTURAL GREENHOUSES

1. Our Agricultural GOTHIC ARCH Greenhouses - This system is 30 ft wide, by any 30 ft greenhouselength - and is built for farms and ranches- it is considered an "Impermanent Structure" and -in most cases- can be built without permits and without concrete footings- etc. These houses are usually Fee Exempt in a Agricultural setting- These full-fledge Greenhouses are considered "Hightunnel Cold Frames" and can be built with tough and durable - 12-20 mil, Woven Poly Sidewalls and EndWalls. These systems come complete with all parts and many options. The V-Truss System insure strength take snow & wind loads easily. The Machine Crank (or automatic) Roll-Up Sides ensure natural ventilation and you have the option of passive solar or hybrid electrical vents and fans. Other options include a tractor sized door, metal end walls sheeted with Twin-Wall® Polycaronate panels. You can build this as a Ground-to-Ground or Pony Wall sidewall system. The 30ft Wide STARSTRUCKTURE ensure maximum space for plants and that means the the will grow large and healthy. As are all of our kits- this unit is complete. from the Ground Posts to the Cover Film, including all hardware and even the drill bits and nut drivers. All you need to put this together is someone to help you stand it up, drill motor, screw gun, ladders and a basic mechanical tool kit. Complete Instructions & Technical help is a phone call away

ALL OF THESE STRUCKTURE can be built with or retrofitted with either an Over-the-Top OR a Interior Depo System

Click Here for an example!

Below- White 35 year Ground Cloth

2. Simple Hoop House Frames or Low Tunnel Greenhouses - These frames are utilized to build 6 ft to 20 ft wide structures that are 6 ft to 8 ft tall at center. The are made from 1.315" dia. galvanized steel. These are simple Cold Frames that are basically a simple series of hoops with hardware to connect the purlins and hold down the Agribon, shade cloth or greenhouse film. They can be easily set-up, taken down & moved again to any location. They can also be used to cover Rasied Beds- Although these frames can be used to build a basic tunnel-type Hoop House- the nest step up is to a Hightunnel design that is far superior for growing with maximum productivity.

20 footer under construction --- Polycarbonate in Snow

2. The PRODUCER Hightunnel Greenhouses - These systems are similar to a hoop house but they are made from thicker 1.66 "diameter galvanized steel tube. They are 20 ft wide by up to 154 ft long. These are 12 foot tall (or taller) at center. Most popular is the 20 ft x 48 ft model. These units have 'straight sides' offering more floor space & growing area as well as a Roll-up Natural Ventilation System on the two side walls- These units are built in place and are usually not movehightunneld from location to location. Many growers use both in-ground, raised beds and/or benches in these units. These Hightunnel Kits are Complete-from the Newest woven poly Solaroof® cover option- to the one-piece frames - to the complete Hardware Package- even the drill bits and nut drivers are included. This system canbe put together by one person with minimal help- Just the basic carpentry tools and common sense- and, of course, as much technical help as you request from us...Although these are naturally heated and cooled utilizing passive roll-up sides (pictured at right), you can add whatever else you wish- including tractor door; optional heating; cooling; benches; shading; High Wind Kits and/or light deprivationsystems.

3. The STARSTRUCKTURE GOTHIC ARCH Greenhouses - This system is 30 ft wide, by any length, Most popular is the 20 ft x 48 ft. These systems are made for more commercial operations and/or snowy conditions. The are made of 1 7/8" 30 ft greenhousegal. steel tubing. This system is a professional unit that provides max- mum growing area for both in-ground and bench systems. These systems come complete with all parts and many options. The V-Truss System insure strength take snow & wind loads easily. The Machine Crank Roll-Up Sides ensure natural ventilation and you have the option of passive solar or hybrid electrical vents and fans. Other options include a tractor sized door, metal end walls sheeted with Twin-Wall® Polycarbonate panels. You can build this as a Ground-to-Ground or Pony Wall sidewall system. The 30 ft STARSTRUCKTURE ensure maximum space for plants and that means the the will grow large and healthy. As are all of our kits- this unit is complete. from the Ground Posts to the Cover Film, including all hardware and even the drill bits and nut drivers. All you need to put this together is someone to help you stand it up, drill motor, screw gun, ladders and a basic mechanical tool kit. Complete Instructions and Technical help is just a phone call away. Right-STARSTRUCKTURE under construction in Nevada City

4. GREENHOUSE COVERINGS-

A. TUFFLITE® 6 mil, UV, AC Poly is the trade standard and the default covering for our kits- This material works well and should last at least three years. This product costs $ .12 (cents) per square foot.

B. SOLAROO Greenhouse Coverings- is a new woven poly greenhouse covering material that we prefer to regular poly. This material, developed in Israel, is a state-of-the-art material that traps heat in winter, utilizing Infrared, Ultraviolet blocking agents and also an Anti-condensate. This material diffuses light so it is much better for the plants within it. Since it blocks infrared light, insects inside of the greenhouse / hightunnel are blind! It is guaranteed for at least 5 years and has held-up longer than that in our uses. This option costs $ .30 (cents) square ft.

Left- Greenhouse Installers walking on top of a SOLAROOF greenhouse cover.

 

 

STARSTRUCKTURE 30 FT X 48 FT FRAME LOADED ON TRAILER FOR DELIVERY...

 


 

 

 

OUR KITS

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PRICE LIST Starstruckture® Hightunnel 30ft Greenhouse Kits

 

 

PRICE LIST Producer® Hightunnel 20ft Greenhouse Kits

 

COMPONENTS

BLACK-OUT / LIGHT DEPO SYSTEMS ROLL-UP SIDEWALL HARDWARE ROLL-SIDE WALL MACHINES ROLL-UP ROOF MACHINES COMPONENTS BLACK-OUT / LIGHT DEPO SYSTEMS ROLL-UP SIDEWALL HARDWARE ROLL-SIDE WALL MACHINES ROLL-UP ROOF MACHINES

 

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