Tips To Keep High Tunnel Crops Frost-Free This Spring

Help with High Tunnels

Chris Wien, a professor in the Department of Horticulture at Cornell University, offers a few pointers to growers to help them protect their high tunnel crops from frost this spring. Specifically, he points out two procedures that can be implemented immediately and a third technique that is more for long-term production.

1. Construct a low tunnel over the crop in the high tunnel. Spun-bonded fabric works best, with the heavier materials (1 to 2 ounces per square yard) providing better frost protection, he says.

“The fabric should not touch the plants, but be held up by wire hoops or pipes,” explains Wien. “The fabric itself will freeze, so if the plants are touching the fabric, they also will freeze.”

2. A gas-fired heater can be used in the high tunnel for those cold nights when crops are inside. This also will help to slide snow off the high tunnel plastic on days when wet, heavy snow threatens to collapse the tunnel, he adds.

Long-term Technique

Make sure that the tunnel plastic covering the high tunnel is an IR (infrared)-blocking kind, says Wien. “On those clear, cold nights in spring when the temperature dips below freezing, reducing the heat loss from the tunnel with IR-blocking plastic will keep temperatures inside 2 to 4 F warmer.”

Leave a Reply

2 comments on “Tips To Keep High Tunnel Crops Frost-Free This Spring

  1. Additionally, growers are using the inexpensive BioWash to increase sugar content and decrease freezing temperatures down to 26F.

Featured Stories

All Vegetables Stories >All Fruits Stories >All Nuts Stories >All Citrus Stories >

The Latest

Crop ProtectionManaging Lepidoptera In Tomatoes
August 22, 2014
This video provides information on how to best identify and control Lepidoptera in tomatoes. Read More
GrapesMichigan Conference Focuses On Impact Of Climate Change…
August 22, 2014
Experts from Michigan State University, Ohio State University, and Northwestern Michigan College to discuss Polar Vortex, technology, and unmanned systems at one-day conference. Read More
GrapesNew York Grape Grower Survey Reveals Huge Losses
August 22, 2014
Cornell Cooperative Extension publishes results of a grower poll of winter injury damage. Read More
GrapesOregon Anticipates Large Grape Harvest
August 22, 2014
Growers keep fingers crossed that late-season rainfall doesn’t ruin crop. Read More
GrapesFarmers Fresh Fruit Company Integrates QR Code Into Cla…
August 22, 2014
Design allows consumers to access online information about variety, nutritional information, etc. Read More
Crop ProtectionGetting To The Root Of Good Soil Health Requires Some D…
August 21, 2014
Dave Gilliam of Horticultural Alliance says more citrus growers are paying attention to what's happening below the ground in their groves. Read More
Citrus‘Super Cold’ Winter, Sizzling Summer On Tap In 2015…
August 21, 2014
The 223rd edition of the folksy regional forecast manual predicting extremes. Read More
Insect & Disease UpdateMountains Of Data Being Used To Combat Citrus Greening
August 20, 2014
As HLB research evolves, new methods need to be developed to effectively utilize information. Read More
VegetablesAnnual Santa Maria Vegetable Meeting To Cover Progressi…
August 20, 2014
University of California Cooperative Extension will host annual vegetable meeting focusing on nutrient management, plant growth, weed management, and more. Read More
Leafy VegetablesTanimura & Antle Introduces New Lettuce Variety 
August 20, 2014
The California grower now offers George T’s Colossal Romaine Heart, in honor of the company's founder, George Tanimura. Read More
CitrusBorder Crisis Not Helping Farmers
August 19, 2014
As thousands cross into the U.S. seeking refuge, calls for ag labor reform are lost in the uproar. Read More
Cucurbits24 Sweet Watermelon Varieties [Slideshow]
August 19, 2014
Browse the slideshow below for information on 24 watermelon varieties from the nation’s leading seed breeders and distributors. Read More
FruitsHandheld Produce Quality Meter Debuts At 2014 Internati…
August 19, 2014
Researchers to present data measuring dry matter, color, and sugar content of cherries and other product pre- and postharvest. Read More
GrapesNew York State Assists Grape Growers Hit By Harsh Winte…
August 19, 2014
State to open winegrape market to grapes grown outside the state. Read More
FruitsEuropean Fruit And Vegetable Growers Hit By Russian Ban…
August 19, 2014
Angry at European Union/United States sanctions over Ukraine, Russia has banned many food imports. Read More
Apple Grower of the YearGet The Latest News On The Nation’s Apple Crop
August 19, 2014
American and Western Fruit Grower editors will be tweeting in real time this week from the Apple Crop Outlook & Marketing Conference. Read More
OrangesSour Forecast For 2014-2015 Florida Orange Crop
August 18, 2014
Paltry prediction signals lowest output in 50 years. Read More
Crop ProtectionBioConsortia Inc. Bolsters Executive Team
August 18, 2014
Industry veterans Christina Huben and Dr. Susan Turner bring experience to plant biotechnology firm. Read More