Grafting is one of the most fascinating techniques in horticulture and fruit growing. Although fig trees are usually easy to propagate by cutting, grafting is the key tool for obtaining a single tree that produces different varieties of figs, adapting the tree to different soil conditions, improving disease resistance, or saving rare varieties. If you are looking to learn How to graft a fig tree step by stepIn this article, you'll discover methods, practical tips, necessary tools, mistakes to avoid, and the best time to do it, thus achieving high-value, collectible trees.
What is grafting and what is its purpose in fig trees?
Plant grafting is a technique that consists of joining two plants, or parts of them, so that they become a single functional individual.. In this process, the standard (the already developed or well-rooted plant, which will provide the root system and aerial part) is combined with the stem or spike (the fragment of the plant that you want to reproduce to obtain its fruits or qualities). The fusion of both requires that the cambium of both pieces (green layer under the bark) remain in close contact, as this is the growth zone responsible for creating vascular tissue. Thus, the shoot receives sap and nutrients through the rootstock, growing as if they were a single organism.
This technique is used on fig trees and other fruit trees for reasons such as:
- Producing different varieties of figs on the same tree, maximizing space and crop diversity.
- Conserve or propagate scarce varieties, ensuring their survival and facilitating exchange between enthusiasts and collectors.
- Improve resistance to adverse conditions, pests or difficult soils, taking advantage of more adapted patterns.
- Rejuvenate old trees by inserting new varieties on aged branches.
A key point is that The success of the graft depends on the compatibility between the plants, so they must be of the same genus (in the case of fig trees, ficus carica). There are exceptions, but it is recommended to always work within this range to ensure proper graft union and development.
Among the grafting methods, some are more appropriate than others depending on the species and the objective. In the world of fig trees, the most notable are: whiplash and tongue graft, the apical cleft graft and the Majorcan bud graft or scion.
Fig grafting methods: main techniques
There are several ways to graft fig trees. Choosing the right method depends on the age, branch thickness, time of year, and experience of the grafter. The most effective and common methods for the fig tree are the following:
- Whip and tongue graft: Preferred for young branches of similar caliber. It provides a large surface area between the cambium of the rootstock and the scion, increasing the likelihood of success.
- Apical cleft graft: Used when the rootstock is somewhat thicker than the scion. It consists of making a longitudinal slit in the rootstock branch and inserting a perfectly beveled scion. This method is recommended for mature fig trees or woody branches.
- Bud graft (Mallorcan chip): Traditional in Mediterranean areas and widely used when harvesting tender twigs. It allows multiple grafts to be made onto the same branch and facilitates the exchange of plant material.
- Crown graft: It is primarily used to renew mature trees, adding several spikes around a previously cut branch or trunk. Although less common, it can be used on fig trees to replace aging crowns.
The choice of technique will be determined by the particular situation of the tree, the time of year and the objective of the graft. All methods require precision, clean tools, and exact cuts to maximize cambial contact and reduce the risk of infection.
How to graft a fig tree step by step: Detailed guide
Whip and tongue grafting, as well as apical cleft and Mallorcan chip grafting, are the most commonly performed procedures. Below, you'll find a comprehensive guide, combining professional information, practical advice, and helpful steps for successful fig grafting.
1. Selection and preparation of the material
- Pattern choiceChoose a healthy, vigorous, well-rooted fig tree that's at least one year old. It can be grafted onto branches that are about 8–15 mm thick (whip and tongue grafting) or thicker (apical cleft/crown grafting).
- Selecting the pick or stemSelect young branches from the previous year, with at least 3-4 buds, free of disease and cuts. Cut in the morning or on cloudy days to avoid dehydration.
- Tools needed:
- Grafting knife (well sharpened and disinfected, you can use alcohol or diluted bleach)
- Grafting tape or transparent plastic film
- Disinfected pruning shears
- Parafilm for added protection (optional) or grafting wax
- Clean gloves
2. Whip and tongue grafting on fig trees: key steps
- Cutting on the pattern: Make a 2,5 to 6 cm oblique cut on a young branch of the rootstock. The angle increases the cambial contact surface.
- Tongue cut: Make a second, smaller cut a third of the way through the cut so that the two pieces fit together perfectly.
- Pick preparation: Select the desired variety of pick, make the same cut as before, and then make the "tongue" in the opposite direction so that both pieces fit together as one.
- Union of stem and rootstock: Put both pieces together, making sure the cambium (green layer under the bark) aligns perfectly on one or both sides.
- Subjection: Securely tie the joint with grafting tape or plastic wrap. Use enough pressure to hold the pieces together without strangling the tissue.
- Protection: Cover the area with graft wax or parafilm to prevent dehydration and the entry of pathogens.
3. Apical cleft graft: complete procedure
This method is especially useful for thicker branches or rootstocks. It's simple and has a very high success rate on fig trees.
- Pattern cutting: Section the end of the chosen branch (preferably tender) and make a longitudinal indentation of about 4 to 5 cm using the grafting knife.
- Pick bevel: File both sides of the pick base, forming a sharp, symmetrical peak. The pick thickness and pattern should be similar to facilitate fusion.
- Insertion and fixation: Insert the scion into the rootstock's groove, ensuring that the cambiums overlap on at least one side. You can leave a leaf petiole to aid the scion's feeding.
- Bind and protect: Use grafting tape or plastic wrap to wrap the union and prevent moisture loss. If the sun is too intense, cover the area with fresh leaves to protect the graft for the first few days.
- Review: After 2-3 weeks, check to see if the graft is still green and sprouting. Keep the tape on until the sprouting reaches about 15-20 cm.
4. Bud graft or Mallorcan chip
This technique is traditional in Mediterranean areas. It consists of extracting a bud with a bit of bark from the scion and inserting it into an incision in the rootstock. Seal it with tape and wait for it to sprout. It is ideal for grafting many varieties in a small space or when available material is scarce.
5. Practical tips for a successful graft
- Prevents the pick or stem from dehydrating. Work quickly and, if necessary, wrap the material in a damp cloth until grafting.
- Make the cuts as clean and exact as possible, increasing the contact surface and reducing exposure to diseases.
- Protects the joint area from sun, wind and heavy rain during the first few weeks. You can use film or even fresh leaves held over the graft.
- Disinfect all tools before each graft to prevent the transmission of pathogens.
- Do not remove the tape until the graft has fully healed and budding is vigorous.
Ideal time to graft fig trees: optimal moments
The ideal time to graft fig trees is at the stage of maximum sap and budding, that is, during spring and early summer. The months vary depending on the climate, but generally range from end of winter rest until the first half of summer.
Spring offers the highest success rate Since the plant activates its growth and regenerates tissue quickly. In temperate zones, grafting can last until August or September, although in this case, the grafted scion won't sprout until the following spring.
- On young rootstocks and tender branches, graft at the beginning of budding.
- In adult trees or woody branches, graft when the tissues are active, but not excessively green.
Avoid grafting on days of extreme heat, frost or prolonged rain., as they significantly decrease the rate of engraftment and increase the risk of disease.
Aftercare and problems after grafting
To ensure that the fig graft succeeds, it is essential to take a series of precautions and observe the following:
- Humidity monitoring: The graft area should remain slightly moist, but never soaked, to prevent rot.
- Avoid dehydration: A graft exposed to intense sunlight or dry wind may fail. Protect with film and shade from direct sunlight if necessary.
- Remove unwanted shoots: The rootstock may sprout below the graft. Remove all ungrafted shoots to direct the sap toward the scion.
- Check the joint regularly: If the area bulges or cracks appear, remove the tape and replace it to allow for thickening.
If you notice that the scion is drying out or turning black, discard it and repeat the process with a new, fresh, healthy scion. Remember that, although fig trees generally accept grafts well, some may fail due to weather conditions, unfresh material, or improper handling.
Frequently asked questions about grafting fig trees
What varieties can I graft onto a fig tree?
You must choose varieties of the genus ficus caricaIt is possible to graft cultivated fig varieties onto caprifigs and vice versa, as long as they are compatible.
How long does it take to see the success of the graft?
Under ideal conditions, the first signs of engraftment (green, turgid shoots) are seen between 2 and 4 weeks after grafting.
Is it possible to graft an adult fig tree?
Yes, it is possible using cleft or crown techniques and performing pre-pruning to stimulate the development of new shoots for grafting.
Why graft a fig tree if it can be propagated by cuttings?
Grafting offers benefits such as combining several varieties into a single tree, improving the tree's adaptation to difficult soils, increasing disease resistance, and facilitating the renewal of aging trees.
What to do if the graft fails?
The best thing to do is try again, choosing fresh materials, cleaning your tools well, and adjusting the time of year.
Fig grafting is an ancient and accessible technique that not only allows you to enjoy different types of figs on a single tree, but also safeguards and multiplies unique varieties, adapts the crop to different soils, and gives new life to mature or aging specimens. With a little practice, patience, and proper care, anyone can achieve a successful graft.You'll find that the satisfaction of harvesting different figs from a single tree is as great as the experience of watching your grafts grow vigorously and healthily.
