Hoophouses I visited this month

In early November, during the Carolina Farm Stewardship conference I went on the afternoon bus tour to see 10 high tunnels and how they’re used for season extension,  irrigation, disease control, pest protection, and trellising. Red Hawk Farm grows salads and greens year-round in six high tunnels (more under construction!), and sells primarily to local grocery stores and restaurants.  Funny Girl Farm grows produce year-round for its popular farmstand and CSA, with four high tunnels and a greenhouse.They were focusing on the sweet potato harvest outdoors when we visited.

Red Hawk Farm hoophouse densely planted with multileaf lettuces.
Photo Pam Dawling

At Red Hawk Farm I was astounded to see this whole hoophouse planted wall-to-wall with multileaf lettuces. No aisles! The farmer Brett Evans plans to harvest with a walk-behind motorized salad harvester machine that makes a 4 ft wide cut. Then he’ll leave the lettuces to regrow. He uses the paperpot transplanter  which I mentioned last week. Here are the starts growing in their propagation house.

Lettuce starts in paperpots at Red Hawk Farm.
Photo Pam Dawling

They still had peppers bearing well in one high tunnel

Early November pepper harvest at Red Hawk Farm.
Photo Pam Dawling

Another interesting feature was the opening roof vent, which I had not seen in operation on a hoophouse before.

Opening roof vent on a hoophouse at Red Hawk Farm.
Photo Pam Dawling

And this past week, I went to Potomac Vegetable Farms in northern Virginia for a talk with Future Harvest CASA members, and a tour of the hoophouses used there led by farmer Zach Lester.  I was interested in seeing the success he is having with caterpillar tunnels. These are smaller tunnels with a single layer of plastic, held in place by ropes, as you see in the photo below. They can be temporary or short-term, and Zach showed us one which is a “swing house” with two sites side by side, sharing one row of ground posts, and having just one row to move each time. Another way to deal with crop rotations and reduce the chances of pests and diseases!

Caterpillar tunnel at Potomac Vegetable Farms.
Photo Pam Dawling

At the ends, the plastic is gathered up and tied to well-anchored stakes, as you can see here.

How the ends of caterpillar tunnels are gathered and fastened to stakes.
Photo Pam Dawling

Zach got these frames custom made by Nolts. They have taller sidewalls than many models. He is also a firm believer in having a ridgepole in caterpillar tunnels, to reduce the likelihood of collapse with snow or high winds. As you can see here, they had some snow already.

Potomac Vegetable Farms caterpillar tunnel showing rolled up side.
Photo Pam Dawling

At both these farms, I learned the technique of laying landscape fabric along the side walls to reduce weed growth. You can burn holes in the landscape fabric where the ground posts go through, and it will keep the weeds away for a long time. I wish I’d known that technique when we put up our hoophouse. We have to hand weed, and in some places we have wiregrass (Bermuda grass) which has grown under the baseboards and even between the boards where there are joins.


Lastly, I have of course visited our own hoophouse at Twin Oaks, and have written a post for Mother Earth News Organic Gardening on Dealing with Snow on Your Hoophouse. So if it’s snowing where you are, you can click on the link to read about that.

Hoophouse Many Crops slideshow, Hoophouse Squash article in Growing for Market, Modern Farmer

Here’s my Many Crops, Many Plantings slideshow from my shared Friday morning pre-conference intensive workshop at the Carolina Farm Stewardship Conference.

Scaling Up: Maximizing High Tunnel Production
Gena Moore, Carolina Farm Stewardship Association, and Pam Dawling, Twin Oaks Community

High tunnels provide high-value space for growing various crops throughout the year, but maximizing production comes with challenges. In this workshop, Gena and Pam will discuss how to effectively use high tunnels to maximize potential. Topics include monocropping for wholesale production, diversified high tunnel production, and effective management throughout the year.


The November/December issue of Growing for Market is out, including my article on Hoophouse Squash and Cucumbers for Crop Rotation.

We transplant one bed each of summer squash and bush cucumbers in our hoophouse on April 1st. This gives us harvests a month earlier than the outdoor crops. It also helps us have a crop rotation (compared to tomatoes and peppers in all the beds every year.) We find that people really enjoy early squash and cucumbers, as a welcome change from winter crops, and a harbinger of what is to come. We end the squash and cucumber sin July, once the outdoor plantings are bearing well, and use the hoophouse space for cowpeas or edamame, usually. Summer cover crops would be another fine option.

Hoophouse squash between beds of tomatoes in July.
Photo Alexis Yamashita


A great resource I discovered quite recently is Modern Farmer. 

Lots of interesting article, including the good news for certified Organic growers that the paperpot system is now accepted under Organic regulations. See

Machine Makes Planting a Breeze https://youtu.be/J_ia4KpVLKs via @YouTube

Paperpot transplanter.
Photo Johnny’s Seeds

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While at teh CFSA Conference I participated in the High Tunnels Bus Tour, and saw a whole hoophouse planted wall-to-wall with lettuces at 6″ spacing using one of these. For next week, I’ll sort out my photos from that event and also my visit to Potomac Vegetable Farms where Zach Lester is focusing on protected crops using hoophouses and caterpillar tunnels.


Lastly (how can I forget), my publisher, New Society, is doing a Book Giveaway on Facebook this week (starting Nov 15) with my new book The Year-Round Hoophouse. It’s on their Facebook page and Instagram. Enter a question, I answer it, and someone wins a copy of the book at the end of the week (very soon!)