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

 

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HOOP HOUSES * CATERPILLAR TUNNELS

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SOLAR CATERPILLAR Tunnel SALE :

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HOOP STYLE COLD FRAMES

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1. CATERPILLAR HOOPHOUSE - 12' x 25' FRAME= $1250

2. CATERPILLAR HOOPHOUSE - 12' x 50' -FRAME= $1850

For LONGER KITS- UP TO 120 FT - CALL US!

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20 FOOT with POLYCARBONATE ENDWALLS

20 FT WIDE PRODUCER HIGHTUNNELS

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3. HIGHTUNNEL ---20' x 36' -Frame-$3500

4. HIGHTUNNEL --20' x 48' -Frame - SALE* $3999

5. HIGHTUNNEL -- 20' x 60' ---- $4450

6. HIGHTUNNEL -----20'x 72' -------$5150

7. HIGHTUNNEL------ 20'x96'--------$6850

> 20' X 72' -Complete GROWERS Package -$CALL-<

STARSTRUCKTURE 30 ft wide

Roll-up sides provide complete Natural Ventilation

All of these Houses can be built with or retro-fitted for

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These Kits Come with Equipment Packages- Additional Equipment is listed at top of this page as OPTIONS

GOTHIC ARCH Pro Growers

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8. GOTHIC HIGHTUNNEL-30'x50' W/Equipment Pkg-$7150

9. GOTHIC HIGHTUNEL -30'X60' W/Equipment Pkg- $7995

10. GOTHIC HIGHTUNNEL-30'X80' W/Equip. Pkg- $9550

11. STARSTRUCKTURE- 30'x100' √W/Equip. Pkg- $10500

GOTHIC ARCH Pro Growers

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STARSTRUCKTURE™ CODED STRUCTURES

These Houses come with complete Engineer-Stamped Plans which you can take to your County and get your Building Permit!

12.-30'x84' -Gothic Arch GROWERS Package -$22,500-<

13.-30'x100' -Gothic Arch GROWERS Package -$25,500-<

30 foot GOTHIC HIGHTUNNEL ready for cover

30 foot GOTHIC HIGHTUNNEL in Winter

 

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These structures are made from Triple-Coated Galvanized US Steel, the latest State-of-the Art Components and high-quality connectors and hardware- Our Growing systems

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Ray Diggins

 

 

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