How To Build A Grape Trellis

You're reading How To Build A Grape Trellis, posted on Monday, June 21st, 2010 at 4:44 am in Uncategorized, on BrainBloggers at the Gardening blog. More after the jump.

If you have ever thought about growing grapes then you should possibly already realize how vital a grape trellis will be to the entire process. Using a well constructed trellis ensures that all your growing grapes will be exposed to sufficient amounts of sunlight. It is not difficult to build a grape trellis, and should only require a couple hours to finish. You do not have to be a carpenter to carry out this task especially if you are utilizing a 2-wire system. This approach is best used with cordon trained grapes that are grown at an angle to help support the growing stem. This system is assembled with some wires that are five feet in height and a second set of wires which measure approximately a foot individually. This will then allow the growing vines to entwine the uppermost wires for full support. When using your grape trellis you will have to occasionally tie the shoots to secure them effectively.

How To Build A Grape Trellis

Required Materials

10-12 gauge wire the best option being high tensile stainless steel. You should be able to locate this at most hardware stores, it will be sold in rolls and its price will be determined by the weight of the roll you purchase. Using the tensile stainless steel wire will cut down on the time you will spend rewiring or adjusting the wires on your trellis as time progresses.

Lumber or metal to construct posts of varying sizes. The heavier posts will be utilized for base support while the lighter posts will be designated for housing the bulk of the vines. The larger posts need to be wooden and the lighter ones can be composed of either metal or wood. An adequate size to use for your heavier posts is approximately 3 inches in diameter. This will allow you to run the rows of the trellis for an estimated 280 feet if you plan to go over this amount then the post will have to be thicker with a 6 inch diameter.

Cement can be used to allow the posts to be erected more firmly in the ground.

Required Tools




Power Saw

Set Square




1.First you should install your posts. If the area where you will be erecting the post is windy then you will need to dig the spaces for your posts at a distance of no greater than 15 to 20 feet apart. The closer the larger posts the smaller the possibility for lagging to manifest in the wires as a result of shifts caused by the wind. The holes should be about 2 feet deep if the soil is resilient, however, for soil that is softer or if the holes will be dug in areas that are sandy, dig a deeper hole with your shovel or spade to ensure the posts will be left firmly in place. Use cement if you want to re-enforce your posts. Mix the cement with water and pour it into the individual holes and fill to about half the depth of each

2.You will need to create your smaller posts from the lighter pieces of wood that you have. Cut them with a saw or power saw. For greater accuracy you may wish to measure them carefully with a set square. Once these pieces are cut you may now attach them to the bigger posts using a hammer and a few nails to place them in the most suitable spaces. You caninstall them based on your own design or any other you would like to use.

3.Lastly you will have to put up wires for the grape vines to grow on. Drill holes into the individual posts, both the larger and smaller posts when this is finished you can install your wire. You may need to anchor your wires so that they can hold up the vines. When you are installing the wires ensure that they are taut but not too tight so that they are elongated to the point of nearly breaking. If you are installing an anchor or two be certain to put it in a hole of about 2-3 feet in depth and then make a loop at the top of it where the wire may be drawn through. You may also consider installing your wire by hammering a couple nails at key points and then wrapping the wire around them at all points.

4.Your trellis can now be used for your grapes.

Tips and Warnings

Different variety of grapes will need different methods of care and maintenance. Therefore it is important that you do the proper research before choosing which type of grape you will grow.

Ensure that any treatments you use on your posts will not seep into the soil and lower the quality of your grapes. Opt for protective coatings that are not very toxic in the last stages of finishing your grape trellis, if your lumber is not treated or you would like to enhance the resistance the wood has against the elements.

Once the grape vines begin to grow you may need to intervene in the process and prompt them to grow a bit differently to increase the intake of sunlight.