Tag agriculture

How To Propagate New Grapevines From Cuttings

wpawinepirate 1 Comment

If you want to propagate new grapevines from cuttings of existing vines, now is the time to start planning. 

The following article is a collaborative effort between myself and Stephen Casscles, a leading authority on the propagation and cultivation of cool climate and heritage grapevines. It is a detailed account of the procedures for propagating new grapevines from the cuttings of an existing vine. Thank you Steve for being so generous with your time and knowledge. All photos in this article are courtesy of Stephen Casscles. If you need more information about how to propagate vines, consult older books written by Philip Wagner, which are still available, or contact your local cooperative extension agent who can direct you to excellent brochures produced by your local agricultural state university.

If you have or can obtain clippings from a grapevine that produces excellent fruit, it is easy to reproduce as many vines/clones of that vine as you want. Starting new vines from the clippings of a mother vine ensures you will grow an exact copy of the vine and it will crop the same quality grapes as the original vine. Be sure that the mother vine that you select for your cuttings is a strong vine, that exhibits no indications of viruses or diseases. Vines that have curled leaves, odd-looking clusters, or off-leaf colors could have been contaminated with a virus. Do not use these vines as you are simply propagating diseased and virus-laden vines and not the strong virus-free vines that you want.

Propagating new grapevines from cuttings is an easy project. First, you must gather your propagating wood in early Spring while the vines remain dormant. Cut 12-18 inch sections from one-year-old wood that is about the thickness of a pencil and has a minimum of at least four leaf bud nodes on it. Ideally, having five or six bud nodes per cutting offers the best chance of success. A leaf bud node will look like a small bump on the stem.

The next step is up to the propagator, but Steve said he was taught to nip off a straight cut one inch above the top bud and make an angled cut at the bottom of the cane just below the bud node. Making your angled cut at the bottom of the stem easily shows where the top of the cutting is from the bottom which makes it easier when setting out your nursery cuttings, it also allows the cutting to be easily planted in the soil. No matter how you cut your ends, make sure you are consistent so that you will always plant your cuttings correctly, bottom side down in the soil. Dipping the bottom end of the stem into rooting hormones is helpful in promoting root growth, but is not necessary. You can find rooting hormones at your local garden center or nursery. If you are only rooting a few cuttings, fill a potting container with your local soil, if it is good well-drained loam soil, if it isn’t mix it with potting soil to improve its drainage.  Make sure your container is deep enough to accommodate your clippings, but if you are propagating a lot of material consider digging a shallow trench and reserving enough loose soil to fill in around your stems.

  These trenches can be located in your vegetable garden, since this soil has been worked up for many years, and often has a fence around it to keep out the wildlife that may like to browse on your newly installed cuttings. When planting your cuttings, bury them vertically three to four nodes deep with the bottom side down into the ground, leaving the remaining nodes exposed above the soil level. Remember to plant the bottom of the stem down with the straight-cut end above the ground.

    Keep the soil well watered, but not soggy throughout the first year when your cuttings are establishing themselves. For those in potted containers, the cuttings should be placed in a frost-free location with bright indirect sunlight. If you have more than one row of nursery cuttings in your nursery, it is recommended to mulch the cuttings with straw (not hay) to keep down the weeds and retain soil moisture.

Steve explained the difference between taking cuttings from your vine and propagating them as a single project and cloning in which you separate individual canes that have a certain desirable mutation to create an entirely new variety of the original grapevine. Steve gave me an excellent example that was easy to understand. “My understanding is that cloning would be finding an abnormal sport of a vine that is different and you cut that unique cane off to propagate it. For example, Frontenac Gris is only a regular Frontenac when it was noticed that a separate cane had bronze-colored grapes and not red.  So cloning would be separating and propagating that “clone”, but if you are propagating wood, you just collect your wood and go at it.”

    It is essential that you plant more cuttings than you need to compensate for some not surviving. As a dear departed friend of Steve’s, Joel Fry of the Bartrams Garden in Philadelphia used to say, “Plant two of everything, and one will die”.  How many to plant is the question? Steve offered his advice based on years of experience in this area of viticulture. “I find that different varieties propagate at different rates. For example, Baco Noir, which is a part Riparia variety tends to have a higher success rate because it is a Riparia. Even with Riparia, I would plan for a 20% non-success rate for varieties such as Delaware, which is a part Bourquinian species hybrid, do not take as readily, so I would expect a 40% death rate.”  I would recommend propagating as many cuttings as possible using only the strongest ones to satisfy your needs and giving the extras away. Vines can also be rooted in water, but you will need to change the water regularly to prevent disease. Once you see the stems/cuttings rooting, you must transplant them into the soil.

    Whether you set out a nursery in your home garden or place them in pots in the spring, you need to wait an entire year to ensure that your cuttings have sufficient roots before they are set out in the field the following spring. After your cuttings have developed a strong root system they can be transplanted to their permanent location. 

    You probably have heard vintners say the clone number for a specific variety of grapes planted in their vineyard. An example of this would be the Pinot Noir Dijon clones 114, 115, 667, and 777 which are the most widely planted Pinot Noir clones because of their reliability and productivity. When you drink any mass-produced Pinot Noir you are likely drinking wine made from these clones. It is easy to go down a “rabbit hole” when looking for clones of just about any grape variety when researching which clones to plant in your vineyard. Don’t let the sheer number of options overwhelm you. The answer to this question is a simple one, treat a clone like a different variety. Pick a clone you like and propagate that clone.

    Growing your own vines from cuttings is a rewarding venture both financially and from the sense of personal accomplishment you will feel when you harvest your first grapes. With the adverse effects of climate change being documented in vineyards around the world and the increased number of adverse weather events plaguing vintners, the answer to a consistent and economically sustainable fruit crop may lie in the past with heritage grape varieties, older cool climate hybrids, and new hybrids that are being developed. Growing heritage and cool climate hybrid grape vines that have adapted to survive many weather-related challenges over time could be a critical puzzle piece in the future viability of our vineyards, for both hobby and commercial grape growers. In addition, these varieties tend to be more productive and can be grown more sustainably with fewer pesticide/fungicide applications. They are direct producers that do not need to be planted on a rootstock. This means that if we witness a very cold winter or late spring frost, which kills that part of the vine above the ground, canes will come up from the ground to produce a crop in the same growing season.

    With that objective in mind, Stephen Casscles continues to labor on his long-term project, the Cedar Cliff Vineyards Heritage Grape\Wine Project, aimed at preserving heritage and lesser-known cool climate grape varieties in Northern America. If you have any questions about his work at Cedar Cliff Vineyards please contact Stephen Casscles cassclesjs@yahoo.com  To further his work, Stephen has established a set of three cooperating nurseries in Marlboro, NY, Fonda, NY, and Ipswich, MA where you can purchase already rooted vines and/or grape cuttings. If you are interested in obtaining vines or cuttings of these unique varieties, please feel free to contact Stephen Casscles cassclesjs@yahoo.com.  Sadly, most of these cuttings or vines are not available at commercial nurseries, hence we need to propagate them on our own to increase the availability of these unique virus-free/ disease-free grape varieties. For additional information on these heritage and cool climate grape hybrids, the 2nd edition of Steve’s book “Grapes of the Hudson Valley and Other Cool Climate Regions of the US and Canada”  is available at http://www.flintminepress.com

How To Propagate Grapevines From Cuttings

wpawinepirate 4 Comments

The following article is a collaborative effort between myself and Stephen Casscles, a leading authority on the propagation and cultivation of cool climate and heritage grapevines. It is a detailed account of the procedures for propagating new grapevines from the cuttings of an existing vine. Thank you Steve for being so generous with your time and knowledge. All photos in this article are courtesy of Stephen Casscles. If you need more information about how to propagate vines, consult older books written by Philip Wagner, which are still available, or contact your local cooperative extension agent who can direct you to excellent brochures that have been produced by your local agricultural state university.

If you have or can obtain clippings from a grapevine that produces excellent fruit, it is easy to reproduce as many vines/clones of that vine as you want. Starting new vines from the clippings of a mother vine ensures you will grow an exact copy of the vine and it will crop the same quality grapes as the original vine. Be sure that the mother vine that you select for your cuttings is a strong vine, that exhibits no indications of viruses or diseases. Vines that have curled leaves, odd-looking clusters, or off-leaf colors could have been contaminated with a virus. Do not use these vines as you are simply propagating diseased and virus-laden vines and not the strong virus-free vines that you want.

Propagating new grapevines from cuttings is an easy project. First, you must gather your propagating wood in early Spring while the vines remain dormant. Cut 12-18 inch sections from one-year-old wood that is about the thickness of a pencil and has a minimum of at least four leaf bud nodes on it. Ideally, having five or six bud nodes per cutting offers the best chance of success. A leaf bud node will look like a small bump on the stem.

The next step is up to the propagator, but Steve said he was taught to nip off a straight cut one inch above the top bud and make an angled cut at the bottom of the cane just below the bud node. Making your angled cut at the bottom of the stem easily shows where the top of the cutting is from the bottom which makes it easier when setting out your nursery cuttings, it also allows the cutting to be easily planted in the soil. No matter how you cut your ends, make sure you are consistent so that you will always plant your cuttings correctly, bottom side down in the soil. Dipping the bottom end of the stem into rooting hormones is helpful in promoting root growth, but is not necessary. You can find rooting hormones at your local garden center or nursery. If you are only rooting a few cuttings, fill a potting container with your local soil, if it is good well-drained loam soil, if it isn’t mix it with potting soil to improve its drainage.  Make sure your container is deep enough to accommodate your clippings, but if you are propagating a lot of material consider digging a shallow trench and reserving enough loose soil to fill in around your stems.

  These trenches can be located in your vegetable garden, since this soil has been worked up for many years, and often has a fence around it to keep out the wildlife that may like to browse on your newly installed cuttings. When planting your cuttings, bury them vertically three to four nodes deep with the bottom side down into the ground, leaving the remaining nodes exposed above the soil level. Remember to plant the bottom of the stem down with the straight-cut end above the ground.

    Keep the soil well watered, but not soggy throughout the first year when your cuttings are establishing themselves. For those in potted containers, the cuttings should be placed in a frost-free location with bright indirect sunlight. If you have more than one row of nursery cuttings in your nursery, it is recommended to mulch the cuttings with straw (not hay) to keep down the weeds and retain soil moisture.

Steve explained the difference between taking cuttings from your vine and propagating them as a single project and cloning in which you separate individual canes that have a certain desirable mutation to create an entirely new variety of the original grapevine. Steve gave me an excellent example that was easy to understand. “My understanding is that cloning would be finding an abnormal sport of a vine that is different and you cut that unique cane off to propagate it. For example, Frontenac Gris is only a regular Frontenac when it was noticed that a separate cane had bronze-colored grapes and not red.  So cloning would be separating and propagating that “clone”, but if you are propagating wood, you just collect your wood and go at it.”

    It is essential that you plant more cuttings than you need to compensate for some not surviving. As a dear departed friend of Steve’s, Joel Fry of the Bartrams Garden in Philadelphia used to say, “Plant two of everything, and one will die”.  How many to plant is the question? Steve offered his advice based on years of experience in this area of viticulture. “I find that different varieties propagate at different rates. For example, Baco Noir, which is a part Riparia variety tends to have a higher success rate because it is a Riparia. Even with Riparia, I would plan for a 20% non-success rate for varieties such as Delaware, which is a part Bourquinian species hybrid, do not take as readily, so I would expect a 40% death rate.”  I would recommend propagating as many cuttings as possible using only the strongest ones to satisfy your needs and giving the extras away. Vines can also be rooted in water, but you will need to change the water regularly to prevent disease. Once you see the stems/cuttings rooting, you must transplant them into the soil.

    Whether you set out a nursery in your home garden or place them in pots in the spring, you need to wait an entire year to ensure that your cuttings have sufficient roots before they are set out in the field the following spring. After your cuttings have developed a strong root system they can be transplanted to their permanent location. 

    You probably have heard vintners say the clone number for a specific variety of grapes planted in their vineyard. An example of this would be the Pinot Noir Dijon clones 114, 115, 667, and 777 which are the most widely planted Pinot Noir clones because of their reliability and productivity. When you drink any mass-produced Pinot Noir you are likely drinking wine made from these clones. It is easy to go down a “rabbit hole” when looking for clones of just about any grape variety when researching which clones to plant in your vineyard. Don’t let the sheer number of options overwhelm you. The answer to this question is a simple one, treat a clone like a different variety. Pick a clone you like and propagate that clone.

    Growing your own vines from cuttings is a rewarding venture both financially and from the sense of personal accomplishment you will feel when you harvest your first grapes. With the adverse effects of climate change being documented in vineyards around the world and the increased number of adverse weather events plaguing vintners, the answer to a  consistent and economically sustainable fruit crop may lie in the past with heritage grape varieties, older cool climate hybrids, and new hybrids that are being developed. Growing heritage and cool climate hybrid grape vines that have adapted to survive many weather-related challenges over time could be a critical puzzle piece in the future viability of our vineyards, for both hobby and commercial grape growers. In addition, these varieties tend to be more productive and can be grown more sustainably with fewer pesticide/fungicide applications. They are direct producers that do not need to be planted on a rootstock. This means that if we witness a very cold winter or late spring frost, which kills that part of the vine above the ground, canes will come up from the ground to produce a crop in the same growing season.

    With that objective in mind, Stephen Casscles continues to labor on his long-term project, the Cedar Cliff Vineyards Heritage Grape\Wine Project, aimed at preserving heritage and lesser-known cool climate grape varieties in Northern America. If you have any questions about his work at Cedar Cliff Vineyards please contact Stephen Casscles cassclesjs@yahoo.com  To further his work, Stephen has established a set of three cooperating nurseries in Marlboro, NY, Fonda, NY, and Ipswich, MA where you can purchase already rooted vines and/or grape cuttings. If you are interested in obtaining vines or cuttings of these unique varieties, please feel free to contact Stephen Casscles cassclesjs@yahoo.com.  Sadly, most of these cuttings or vines are not available at commercial nurseries, hence we need to propagate them on our own to increase the availability of these unique virus-free/ disease-free grape varieties. For additional information on these heritage and cool climate grape hybrids, the 2nd edition of Steve’s book “Grapes of the Hudson Valley and Other Cool Climate Regions of the US and Canada”  is available at http://www.flintminepress.com .  

Times They are a Changing

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Organic, biodynamic, natural, sustainable, and many other techniques of viticulture and winemaking are once again making their existence known in the wine world. Yes, I said again because these farming methods are being updated using current technology but the basic premise of all of them is nothing new. The idea behind all of these methods of producing wine using the least human intervention possible was once done by necessity rather than by a conscious choice. In the not too distant past, there were no chemical controls and spraying programs available to vintners. Winemakers had to rely on taste and experience to know how their grapes and wine were progressing without a lab to verify their assumptions. Even after chemical controls became available the poorer producers still had to rely on biological controls and manipulating the natural conditions to bring in a harvest.

Understanding the delicate interactions between nature and agriculture has always been a passion of mine. My preoccupation with keeping the ecosystem clean and free of dangerous residual chemical compounds is completely understandable once you know a little about me, my background, and my education. I grew up across the road from my mother’s family farm where I watched my uncle, aunt, and cousins farming and caring for the land. I would pursue my higher education at California University of Pennsylvania where I graduated cum laude with a Bachelor’s degree in Nature Conservation. I have since combined that education with my interest in writing and the love of wine into an exciting journey of discovery. My writing has allowed me to become friends with many winemakers and vintners, not only in the northeastern United States but around the world. I have leveraged my access to these remarkable men and women to further my understanding of the practicality of using less chemical intervention in the vineyard. After years of conversations with the people who know first hand which practices work and which don’t work for their particular circumstances, I have assembled a mosaic of the feasibility of organic viticulture across North America and the world. My findings are that success and failure is very location and climate-specific. Climatic factors have never been predictable but are in flux now more than ever before.

In my ongoing effort to gather opinions on growing grapes organically, I recently had the pleasure to discuss the subject with Greg Winslow, owner/winemaker/vintner of Winslow Winery concerning his efforts to keep his vineyard as organic as possible using the options available to him. The Winslow winery and vineyards are located in the picturesque southwestern Pennsylvania town of Perryopolis. Greg grows a diverse collection of wine grapes, including a recent planting of a favorite of mine, Saperavi. Greg quit using glyphosate in 2016 because of the uncertainty surrounding the effects it might have on the eco-balance of his vineyard. That same year he decided to take a chemical-free approach to weed control when be purchased a weed burner manufactured by Flame Engineering. A weed burner is basically a flame thrower that incinerates the vegetation in the vine rows. It’s easy to see how this method of weed control is environmentally friendly even if it can be visualized as a plot from a cartoon where the results can be

Greg Winslow’s weed burner Photo courtesy Winslow Winery

both hilarious and disastrous. Greg pointed out some nice positives of using his weed burner. On the positive side is that it’s organic, weeds can’t develop a resistance to it, all the weeds and grass in the target area are destroyed instantly, and it has the unexpected benefit of helping sterilize the ground under the vines of fungus and mold that might splash up onto the vines during a rain. He also noted on the negative side the extra cost when compared to chemical herbicides and it doesn’t have the duration of chemical controls. Greg included one unforeseen danger of using this device in the vineyard that I hadn’t thought of. “It is absolutely devastating to bird netting. We use side netting that we leave up all year round then roll it down to cover the fruit zone during version. Once you drop the nets, don’t even think about using this.” 

Not completely satisfied with the weed control the weed burner was providing Greg purchased an offset tiller, a Rineri EL170 to be exact, to complement his weed control program. In addition to using his offset tiller to work the floor of his vineyard, he added drainage tiles and annual ryegrass between his rows to improve the water flow out of the vineyard and lessen soil compaction. His efforts are proving to be effective but are labor-intensive and costly but sustainable by definition. I suggested

Rineri EL
170 offset tiller Photo courtesy: Winslow Winery

he consider the organic broad-spectrum herbicide Weed Slayer to enhance his other weed controls. I first heard of Weed Slayer from Mary Rocca at Rocca Vineyards in the Napa Valley of California. I saw photos of her vine rows completely clear of weeds after vineyard manager Sergio Melgoza had applied the product. Weed Slayer consists of two separate products that are mixed with water to produce an effective herbicide. Weed Slayer is the herbicide and Arg Gold is the biological adjuvant. These two products work together to kill weeds from the root up while leaving no toxicity in the soil. If you have used Weed Slayer in your vineyard or another agricultural application please let me know of your experience with this product.

Greg Winslow believes in the idea of growing organically in his vineyard and pursues it as best he can while having to battle the same problems all producers of agricultural products face in the northeastern United States. When asked about the viability of growing his grapes completely organic and chemical-free he answered honestly and realistically. “I think that growing organically is a noble cause and it would be nice to market wines that were grown that way”. “I think growing organically would be difficult at best, at least in the mid-Atlantic states”. ” I haven’t met anyone in southern Pa and points south that is doing totally organic”. I do however use some organic products in my spray program, I use copper, sulfur, and hydrogen peroxide in my spray rotation, especially as harvest nears”. “I am trying to use only what I need when I need it and not spray irresponsibly for everything”.

Greg Winslow’s candid answers are very similar to the sentiments expressed by all the growers that I have posed these questions to in the Northeast. They say going totally organic would be great but it isn’t feasible at this time. Growing grapes and making wine is no different than any other business in that you need a product to sell. Growers are challenged every year to produce a harvest whether it be organically or with the help of chemical controls or a combination of both. I am always amazed by the ingenuity of these tenacious individuals and their sheer will to succeed.  

Winslow vineyards Photo courtesy: Winslow Winery