How to build a tomato trellis (step-by-step guide) (2024)

by Alan Harris

A tomato trellis is a carefully constructed support system designed to guide and stabilize tomato plants as they grow. It consists of sturdy wooden stakes or metal posts, firmly anchored into the ground, and horizontal lines of twine or wire that create a framework for the plants to climb. This trellis is vital for the successful cultivation of tomatoes, providing numerous benefits to both the plants and the garden.

But how do you build one at home? We’ve got you covered. By following the steps below, you’ll be able to construct a sturdy tomato trellis that provides excellent support for your plants, encourages upward growth, and allows for better air circulation and sunlight exposure, ultimately resulting in healthier and more abundant tomato harvests.

Why use a tomato trellis?

How to build a tomato trellis (step-by-step guide) (1)
By utilizing a tomato trellis, you can ensure that your tomato plants grow in an upright manner, avoiding sprawl on the ground. This not only saves valuable garden space but also helps prevent diseases, pests, and fruit rot that can occur when the foliage comes into contact with the soil. Furthermore, the trellis enables better air circulation and sunlight exposure, fostering healthier growth and optimizing the production of flavorful tomatoes. With its sturdy construction, the tomato trellis supports the weight of mature plants and withstands environmental pressures, creating an organized and visually appealing garden feature while maximizing the potential yield of your tomato harvest.

Here’s a step-by-step guide to help you construct a tomato trellis:

Step 1: Gather the materials

  • Wooden stakes or metal posts (6 to 8 feet long)
  • Twine or wire
  • Hammer or mallet
  • Gardening gloves
  • Scissors or wire cutters (if using wire)

Step 2: Choose the location

Select a sunny spot in your garden or raised bed where the tomato plants will receive at least 6 to 8 hours of direct sunlight each day. Make sure the area has enough space to accommodate the desired number of tomato plants.

Step 3: Prepare the soil

Before constructing the trellis, prepare the soil by removing any weeds, rocks, or debris. Loosen the soil and amend it with organic matter such as compost or well-rotted manure to ensure good drainage and fertility.

Step 4: Install the main posts

Place the wooden stakes or metal posts at either end of the row where you’ll be planting your tomato plants. Insert them into the ground at least 1 to 2 feet deep, leaving around 4 to 6 feet above the ground to provide adequate support for the tomato plants.

Step 5: Secure the main posts

Using a hammer or mallet, firmly tap the ground around the base of each post to secure them in place. Make sure they are stable and won’t easily topple over when the plants grow and become heavy.

Step 6: Attach horizontal support lines

Starting from one end of the row, tie a piece of twine or wire to the top of one post and stretch it tightly to the other post. Repeat this process, spacing the lines approximately 12 to 18 inches apart, depending on the variety and growth habit of your tomato plants. Secure the twine or wire to each post by wrapping it around or using appropriate fasteners.

Step 7: Plant the tomato seedlings

Dig planting holes along the row, spacing them according to the recommended distance for the specific tomato variety you’re growing. Place each seedling into the hole, making sure to bury them deep enough to cover the lower portion of the stem, as tomatoes have the ability to root from their stems.

Step 8: Tie the tomato plants to the trellis

As your tomato plants grow, gently guide the main stem along the trellis and secure it to the twine or wire using soft plant ties, strips of cloth, or twist ties. Regularly check and adjust the ties as necessary to prevent damage to the plants.

Step 9: Prune and train the tomato plants

Throughout the growing season, regularly prune the side shoots (suckers) that develop in the leaf axils of the tomato plants. This will help maintain a single-stemmed plant, focusing energy on fruit production. As the plants grow taller, continue to secure the main stem to the trellis and gently train any additional lateral branches.

Step 10: Monitor and maintain

Regularly monitor your tomato plants for pests, diseases, and nutrient deficiencies. Water the plants consistently, aiming for the soil to remain evenly moist but not waterlogged. Fertilize as needed following the recommendations for your specific tomato variety.

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How to build a tomato trellis (step-by-step guide) (2024)

FAQs

How to build a tomato trellis (step-by-step guide)? ›

Using scrap lumber, you build a frame over your tomato-growing area. Once your plants are in the ground, tie a piece of twine to the plant, and tie it to the framework loosely. As the plant grows upward, you can shorten the twine, thus securing the plant to the frame and helping it stay upright.

How do you make a simple tomato trellis? ›

Using scrap lumber, you build a frame over your tomato-growing area. Once your plants are in the ground, tie a piece of twine to the plant, and tie it to the framework loosely. As the plant grows upward, you can shorten the twine, thus securing the plant to the frame and helping it stay upright.

What is the best trellis method for tomatoes? ›

Using cages to trellis tomatoes is a great technique for several different situations. If you grow 10 or less tomato plants, cages are probably the most feasible option for you. High-quality, square tomato cages provide support around the entire plant.

How tall should my tomato trellis be? ›

Wire Trellis

The tops of the posts should be 5 or 6 feet high. Staple or tie concrete reinforcement wire or wire fencing with 6-inch openings to the posts. You can leave a space of about a foot from the bottom of the wire to the ground; it should be high enough that your tiller can clear underneath.

What kind of string do you use for tomato trellis? ›

The Classic String Trellis

Simply put, you run weatherproof garden twine between two stakes, weaving it around and back so there's twine on either side of each tomato plant. As the plant grows, you add more twine higher up the stakes.

What is the simplest tomato trellis? ›

Try PVC Pipes for Support

Another sturdy method combines metal stakes with simple PVC pipes. Place stakes at the ends and middle of your patch and top them with PVC pipe. This creates an overhead support beam which you can run your twine from. Then, clip tomatoes to the twine as they grow for continued support.

How do you vertically trellis tomatoes? ›

We tie lengths of soft garden twine from the bar and train the tomato plants to climb them. When a plant is 18 inches tall, we tie the bottom of a string to its stem and then twist the main stem around the string as it grows. If necessary, we use small plastic tomato clips to hold the stem and the string together.

How wide should a tomato trellis be? ›

Cages should be 14-18 inches in diameter with a height of 4 feet for determinate plants and at least 6 feet for indeterminate.

Can I use wire to trellis tomatoes? ›

What kind of wire cable should I use to build my tomato trellis? For trellising vining crops like tomatoes, we recommend using 7/19 304 galvanized stainless steel cable. This is often referred to as aircraft cable. It is made up of seven strands of wire each composed of 19 individual strands.

Should I stake or trellis tomatoes? ›

Using a Trellis or Fence for Tomatoes

If you are going to raise a lot of tomatoes, you may want to consider staking them to a fence or trellis rather than individual stakes. You want the type of fence that is very open to allow the plant to weave in and out of the fencing.

What is the best material to tie tomato plants? ›

Use string or twine.

Choose between nylon string or garden twine. Both options are weatherproof, but only certain types of twine are biodegradable. Sisal, hemp and cotton twine are compostable as long as they're untreated. You'll need to collect nylon at the end of the season.

How far to space tomatoes on trellis? ›

Providing support for indeterminate tomatoes makes a big difference in plant spacing. Indeterminate tomatoes can be supported through trellising, the stake-and-weave method, or cages. Supported plants can be spaced much closer together than unsupported plants, at just 1½ to 2 feet apart.

Can you plant tomatoes on both sides of trellis? ›

Even so, if intensive planting makes you nervous, you can always put just one tomato plant in the center of each side of your trellis, so two plants total per trellis.

How do you trellis tomatoes without clips? ›

Use whatever stakes you have on hand – wooden stakes, bamboo, metal – just be sure that they're at least 4 feet high. This isn't the easiest method because you need to keep tieing the plant up over the course of the season, but it works and is cheap.

What are the disadvantages of trellising tomatoes? ›

Disadvantages of Trellising:

You'll spend more time pruning and training the plants - at least some time each week. You'll harvest fewer tomatoes per plant because some pruning will be necessary. Trellised tomatoes are more susceptible to sun-scald because they get less shade from leafy growth.

What materials are used for tomato trellis? ›

Welded wire “cattle panels” make great tomato trellises. They stand up well; clean easily; and the openings are big enough that tomatoes don't get stuck growing into them. Tomash photos.

What is the cheapest way to support tomato plants? ›

1) Stake them

Use whatever stakes you have on hand – wooden stakes, bamboo, metal – just be sure that they're at least 4 feet high. This isn't the easiest method because you need to keep tieing the plant up over the course of the season, but it works and is cheap.

How do you support tomato plants creatively? ›

Build a traditional trellis shape, lash a ladder together, or get creative with a teepee form. Just be sure to dig the ends well into the ground or secure to an existing structure – a wall of tomato plants turns into a sail in windy weather.

Is it better to stake or cage tomatoes? ›

Indeterminate varieties do better with cages because they can reach such heights, but your cage needs to be up to the challenge and offer support at least six feet tall. Of course, you can also use a stake for an indeterminate variety if it's tall enough, but that brings us to our next topic…

How do you make support for tomato plants? ›

To build your own tomato support, all you need are some sturdy bamboo or wooden sticks (about 2.5 metres long) and tear-proof twine. Bamboo, hazelnut, or willow sticks are all suitable for building trellises. To do this, insert the long sticks deep into the ground in parallel rows about 50 to 70 cm apart.

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