Greenhouses & High Tunnels

Vegetable Crops Hotline A newsletter for commercial vegetable growers prepared by the Purdue University Cooperative Extension Service

Greenhouses & High Tunnels

Start Your Season off Right with Pest-free Transplants

March 14, 2023 - From Issue: 715

By: Laura Ingwell

In your propagation/seeding house, you are setting the stage for the remainder of your growing season, and there are a few key things I would like to remind you about [Read More…]

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Grafted Tomatoes for High Tunnel Production

February 22, 2023 - From Issue: 714

By: Wenjing Guan

A grafted tomato plant grown in a high tunnel

Grafted tomatoes show advantages, particularly for high tunnel production. A Purdue extension publication, Techniques for Tomato Grafting, and the video provide a step-by-step guideline for small growers to explore this technique. I am often [Read More…]

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Solanaceous Crops
- Tomato

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Low Temperatures in December Hurt January and February Markets

February 22, 2023 - From Issue: 714

By: Wenjing Guan

A common approach in winter production is to allow crops to reach maturity or harvestable size by the end of November. High tunnels are then used as a ‘living refrigerator’[Read More…]

Article Categories:

Greens and Salad Crops
- Spinach

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Scheduling Fall and Winter Vegetable Production in High Tunnels, Revisited

October 20, 2022 - From Issue: 713

By: Liz Maynard

In April we announced a new bulletin “Scheduling Fall and Winter Vegetable Production in High Tunnels”, available from the Purdue Education store at https://edustore.purdue.edu/item.asp?Item_Number=HO-330-W . With the fall/winter high tunnel [Read More…]

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Root-knot Nematode may be a Hidden Problem in High Tunnels

September 15, 2022 - From Issue: 712

By: Wenjing Guan and Dan Egel

Figure 1. Root-knot nematode damage on a carrot.

We announced in a previous newsletter article that we are doing a survey to understand the extent of root-knot nematode (RKN) damage on vegetable crops in Indiana. Among the 18 [Read More…]

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Vegetable Crops – General

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Scheduling Fall and Winter Vegetable Production in High Tunnels

April 21, 2022 - From Issue: 702

By: Liz Maynard

Cover and chart excerpt from bulletin HO 330-W

A new bulletin “Scheduling Fall and Winter Vegetable Production in High Tunnels” is available from the Purdue Education store at https://edustore.purdue.edu/item.asp?Item_Number=HO-330-W . The publication brings together information collected on farms [Read More…]

Article Categories:

Greens and Salad Crops
- Kale
- Lettuce
- Mustard
- Spinach
- Swiss Chard
Root, Tuber, and Bulb Crops
- Beets
- Carrots
- Leeks
- Radishes

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National Weather Service Maps Can Aid Decision-Making to Reduce Wind Damage

April 21, 2022 - From Issue: 702

By: Liz Maynard

High winds can cause serious damage to high tunnels and greenhouses. Design and construction with this in mind is important to reduce risk. In this article the topic is day [Read More…]

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Vegetable Crops – General

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Leaf and Stem Curling on Young Tomato Plants

April 20, 2022 - From Issue: 702

By: Wenjing Guan

Figure 1. Leaf curling symptom on tomato seedling.

Tomatoes grown in a controlled environment are exposed to different conditions from their original habitats. As a result, some plants may respond to the controlled environment with abnormal symptoms. Leaf [Read More…]

Article Categories:

Solanaceous Crops
- Tomato

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Reducing Blossom End Rot and Yellow Shoulder/Internal White Tissue in Tomato

May 5, 2021 - From Issue: 688

By: Liz Maynard

As tomatoes bloom and set fruit it is a good time to review practices for avoiding some common fruit problems. Water management is key to avoiding blossom end rot. Adequate [Read More…]

Article Categories:

Solanaceous Crops
- Tomato

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Bolting and Blooming in High Tunnels

April 7, 2021 - From Issue: 686

By: Liz Maynard

Bolting of crops overwintered in high tunnels is common in the spring. ‘Bolting’ refers to lengthening and blooming of the flowering stalk. Bolting is often a problem because the quality [Read More…]

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Greenhouses & High Tunnels

Start Your Season off Right with Pest-free Transplants

Grafted Tomatoes for High Tunnel Production

Low Temperatures in December Hurt January and February Markets

Scheduling Fall and Winter Vegetable Production in High Tunnels, Revisited

Root-knot Nematode may be a Hidden Problem in High Tunnels

Scheduling Fall and Winter Vegetable Production in High Tunnels

National Weather Service Maps Can Aid Decision-Making to Reduce Wind Damage

Leaf and Stem Curling on Young Tomato Plants

Reducing Blossom End Rot and Yellow Shoulder/Internal White Tissue in Tomato

Bolting and Blooming in High Tunnels

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