Cold Hardy Fig Varieties: Tips For Growing Winter Hardy Figs


Most probably native to Asia, figs were spread throughout the Mediterranean. They are a member of the genus Ficus and in the family Moraceae, which contains 2,000 tropical and subtropical species. Both of these facts indicate that fig trees enjoy warmer temps and probably won’t do too well if you live in say, USDA zone 5. Fear not, fig lovers living in cool regions; there are some cold hardy fig varieties.

How Cold Hardy are Fig Trees?

So, just how cold hardy are fig trees? Well, you can cultivate cold hardy fig trees in areas where the minimum winter temperatures do not dip below 5 degrees F. (-15 C.). Keep in mind, though, that stem tissue can be damaged at temps well above 5 degrees F., especially if it is a prolonged cold snap.

Established or mature winter hardy figs are more likely to survive an extended cold snap. Young trees of less than two to five years old are likely to die back to the ground, especially if they have “wet feet” or roots.

Best Cold Hardy Fig Trees

Since figs thrive in warm regions, long periods of cold weather limit growth, ergo fruit set and production, and a lengthy freeze will kill them. Temperatures of -10 to -20 degrees F. (-23 to -26 C.) will definitely kill the fig tree. As mentioned, there are some cold hardy fig varieties, but again, keep in mind that even these will need some type of winter protection. Okay, so what are some winter hardy figs?

The three most common cold hardy fig varieties are Chicago, Celeste and English Brown Turkey. These are all also referred to as members of the Common Fig family. Common Figs are self-fertile and there are many, many varieties varying in taste color and growth habit.

  • Chicago – Chicago is the most reliable fig for zone 5 planting, as it will produce plenty of fruit during the growing season even if it freezes to the ground in the winter. Fruit of this cultivar is medium to small in size and richly flavored.
  • Celeste – Celeste figs, also called Sugar, Conant and Celestial figs, also have small to medium fruit. Celeste is a rapid grower with a shrub-like habit attaining between 12-15 feet (3.5-4.5 m.) at maturity. It will also freeze to the ground in low winter temps but will rebound in the spring. This particular cultivar is a little less likely to rebound than Chicago though, so it is best to protect it during the winter months.
  • Brown Turkey – Brown Turkey is a prolific bearer of large fruit. In fact, it sometimes produces two crops in a single year, although the flavor is somewhat inferior to other varieties. It also survives extreme cold temperatures just as Celeste and Chicago. Again to err on the safe side, it is best to provide protection during winter months.

Other cold hardy figs include but are not limited to the following:

  • Dark Portuguese
  • LSU Gold
  • Brooklyn White
  • Florea
  • Gino
  • Sweet George
  • Adriana
  • Tiny Celeste
  • Paradiso White
  • Archipel
  • Lindhurst White
  • Jurupa
  • Violetta
  • Sal’s EL
  • Alma

Growing Cold Hardy Fig Trees

While the three aforementioned fig varieties are the most common cold hardy figs grown, they are not necessarily the best cold hardy figs for your area. Taking into account a possible micro-climate, particularly in urban areas, a USDA zone may jump from a 6 to a 7, which would greatly broaden the number of varieties to grow in your area.

A little trial and error may be in order, as well as discussion with the local Extension office, Master Gardener or nursery to ascertain exactly which fig varieties are suited for your region. Whichever fig you choose, remember that all figs need full sun (a good six hours or more) and well-drained soil. Plant the tree against a protected south wall if possible. You may want to mulch around the base of the tree and or wrap it for protection during the coldest months. Alternatively, grow the tree in a container that can be moved into a protected area like the garage.

Any of the figs are gorgeous specimens to have and once established, are fairly drought tolerant and require little added care. They also have few pest or disease issues. The beautiful large-lobed leaves make a dramatic addition to the landscape and let’s not forget the heavenly fruit — up to 40 pounds (18 kg.) from a single mature tree!


Chicago Hardy Fig Planting Guide

With generous, extended yields of the most delicious mahogany-colored fruit, there's plenty to love about Chicago Hardy Fig Trees! Amazingly, these prolific plants are hardy to zone 5 when given winter protection and self-pollinating, which means they can be grown independently without other varieties present. Chicago Hardy Figs may die back in colder climates, but you can rest assured that they'll resume growth the following spring. These terrific trees are heat and drought-tolerant once established, very easy to grow in containers, and even easier to love. Plus, they typically begin bearing fruit within two years, making them an excellent return on investment! Learn how to plant, grow, and care for Chicago Hardy Figs with our comprehensive guide.


How to plant fig trees

Fig trees are best planted in the early spring while they are still dormant. Plant them in a spot that gets six to eight hours of sun a day. If you are planting more than one, space them from 10 to 35 feet apart, depending on the variety. They prefer a mildly acidic soil.

Dig a hole for your fig that is larger than the root ball after you’ve worked out or pruned any circling roots. Plant the sapling so that it is two to four inches deeper than it was in the nursery pot. Water it thoroughly after planting, but don’t fertilize or prune it until it has had a chance to acclimate to its new location.

If you’re planting your fig tree in a pot, be sure to pick a pot that is large enough for the roots to expand as the tree grows. Restricting the pot size may limit the tree’s growth and harvest capacity. Water as needed when the soil one inch below the surface is dry.

How to achieve maximum results

Fig trees are native to the Mediterranean region, Asia, and the Middle East, and thus they tend to grow best in hot, dry climates. Although most fig trees sold in the U.S. are hardy only to U.S. Hardiness Zone 8, gardeners north of that have success with cold-hardy varieties that can handle the cold down to roughly 10 degrees Fahrenheit, or by growing their figs in large pots that can be moved indoors in the winter.


Soil Preparation & Planting

Soil preparation should always include a preplant soil test. Adjust the pH and any other requirements based on the results of the test.

Plant fig trees while they are dormant. In warm areas, bare-rooted trees can be set out in fall or early winter. In the mountains and piedmont, it is best to set them out in spring after the danger of hard winter freezes has passed. Container-grown plants can be planted later in the season than bare-root plants.


Pruning

Figs don’t require formal training just thin or head back as needed to control size. Use a shovel to disconnect suckers that sprout from the roots throughout the growing season replant or share them with friends.

You can propagate figs by taking cuttings, but the easiest way is to bend a low-growing branch down and secure it to the ground or the soil in a container with a U-shaped wire cover lightly with soil (and a rock if it resists staying buried) and check for rooting. Once the stem has rooted, sever it from the mother plant with pruning shears and it’s good to go.


Troubleshooting

Generally speaking, the Bensonhurst purple fig is a variety that’s resilient. It has great pest and disease resistance, and very seldom exhibits signs of problems.

But pests are determined little critters. So are fungal diseases. So let’s go over the most likely culprits should you run across problems with your hardy fig tree!

Growing Problems

An established hardy Chicago fig tree is very drought-resistant. But despite that, it does still need water. If you see the leaves yellowing during its growing season, it’s thirsty. Give it a drink!

But at the same time, don’t overwater. If your fruit tastes watery or bland, that’s a sure sign that you gave it too much moisture. Give the tree enough to survive, but don’t go overboard.

In zone 5 and 6, your tree is at risk of damage from cold. Twig dieback is not uncommon. The established grey wood will survive, but younger wood may not. Be sure to winterize plants in these areas. Alternately, bring them indoors to overwinter.

Pests

Your biggest and most annoying pest when growing the Chicago hardy fig is birds. They love your fruit as much as you do, and a flock can decimate your harvest.

Use bird netting to keep birds away. Hanging reflective tape is also effective. As a side bonus, you may deter squirrels or other wildlife who might like your fruit!

While they’re not common, there is a short list of other pests that may come to call. Follow the links to more in-depth information about the following potential pests.

  • Root Knot Nematodes
  • Scale Insects
  • Mealybugs
  • Aphids
  • Spider Mites

Diseases

As far as diseases go, your hardy fig will be resilient and able to survive most of them. But diseases can do seasonal damage, and if not treated they may linger into the next year.

Generally, most damage will be to the leaves of your fig. Watch for septoria or alternaria leaf spots. Also keep a watchful eye out for anthracnose, both as a spot or a blight. Rusts are another fungal disease that might appear.

For most of these, a copper-based fungicide will resolve the issue.


Best Cold Hardy Figs - Information About Choosing Cold Hardy Fig Trees - garden

George Ray McEachern
Extension Horticulturist
Texas A & M University
College Station, Texas 77843-2134
December 9, 1996

Figs ( Ficus carica, L.) have been a part of Texas homesteads since the early development of the state. Figs grow extremely well along the Texas Gulf Coast, but dooryard trees can be grown in any section of Texas. In the northern portions of the state, fig trees will require some cold protection and supplemental irrigation will be needed in arid areas or during extended dry periods.

The fig fruit is unique. Unlike most fruit, in which the edible structure is matured ovary tissue, the fig's edible structure is actually stem tissue. The fig fruit is an inverted flower with both the male and female flower parts enclosed in stem tissue. The structure is known botanically as a synconium. At maturity the interior of the fig contains only the remains of these flower structures, including the small gritty structures commonly called seeds. Actually, these so-called seeds are usually nothing more than unfertilized ovaries that failed to develop, and they impart the resin-like flavor associated with figs.

Site Requirements
Figs require full sunlight for maximum fruit production. When choosing a site for figs, select an area that has sun for most of the day, or, expect reduced performance from the trees. Early morning sun is particularly important to dry dew from the plants, thereby reducing the incidence of diseases. Figs are frost and freeze sensitive and perform best south of the 800-hour chilling zone. Mature figs which are fully dormant can endure temperatures of 10 degrees F with little damage.

Soils
Although figs can be grown in all types of soil, they do not tolerate poorly drained sites. Avoid sites and soils where water stands for more than 24 hours after a rain. In areas of poor drainage, roots receive insufficient oxygen, which results in stunted growth and eventual death of the tree. Figs are relatively salt-tolerant and can be grown along the coast near brackish water.

Fig Types
There are four distinct types of figs however, the only one that is significant to commercial growers in Texas is the Common Fig.

    Common Fig
    These figs develop parthenocarpically (without pollination) and are by far the most prevalent type of fig grown in Texas. The fruit does not have true seeds and is primarily produced on current season wood. Varieties recommended for Texas are of the Common Fig type.

Caprifig
The Caprifig produces a small non-edible fruit however, the flowers inside the Caprifig produce pollen. This pollen is essential for fertilizing fruit of the Smyrna and San Pedro types. The pollen is transported from the Caprifig to the pollen-sterile types by a Blastophaga wasp. Commercial growers hang baskets of Blastophaga-infested Caprifigs so that the wasps can effectively fertilize the fruit. Caprifigs were grown successfully at Del Rio before 1901.

Smyrna
The Smyrna fig varieties produce large edible fruit with true seeds. The Blastophaga wasp and Caprifigs are required for pollination and normal fruit development. If this fertilization process does not occur, fruit will not develop properly and will fall from the tree. Smyrna-type figs are commonly sold as dried figs.

San Pedro
This type of fig bears two crops of fruit in one season--one crop on the previous season's growth and a second crop on current growth. The first crop, called the Breba crop, is parthenocarpic and does not require pollination. Fruit of the second crop is the Smyrna type and requires pollination from the Caprifig. Breba crops are produced early in the spring on last season's wood. However, the second crop of the Smyrna type may fail to set because of lack of pollination from Blastophaga and Caprifig. This second crop fruit drop frequently discourages homeowners.

Varieties
There are a number of Common Fig varieties recommended for Texas.

    Celeste (Malta)
    The Celeste fig is small, brown to purple colored, and adapted to all areas of Texas. Celeste is the most cold-hardy of all Texas fig varieties. The tree is large, vigorous, and very productive. Celeste usually does not have a Breba crop the main crop ripens in mid-June before the main crop of other Texas fig varieties. Celeste has a tight closed eye which inhibits the entry of the dried fruit beetle. The fruit does not have excessive souring on the tree. Celeste has excellent fresh dessert quality with a rich sweet flavor. It is an excellent processing fig, either frozen or processed as fig preserves. Do not prune mature Celeste trees heavily since this can reduce the crop.

Texas Everbearing (Brown Turkey)
Texas Everbearing is a medium sized fig adapted to Central and East Texas. It is the most common variety in Central Texas. The tree is vigorous, very large, and productive. The early crop ripens in May the main crop ripens in late June and continues to ripen into August. The fruit has a short, plump stem and moderately closed eye which reduces souring on the tree. The fruit is nearly seedless and has a mild sweet flavor. Early crop fruit is very large, sometimes 2 inches in diameter.

Alma
Alma is a Common Fig variety released by the Texas Agricultural Experiment Station in 1974. Alma resulted from a cross between the female Allison and the male Hamma Caprifig. It is a late season variety with very high fruit quality. The fruit skin is rather unattractive however, the flesh has an excellent rich, sweet flavor. The tree is moderately vigorous, very productive, and comes into production at a very early age. The eye of Alma fruit is sealed with a drop of thick resin that inhibits the entry of the dried fruit beetle, thus reducing on-the-tree fruit souring. Alma is very frost sensitive, especially as a young tree, and typically survives best when grown within 200 miles from the Gulf of Mexico.

Magnolia
This variety (Madonna, Dalmatia, Brunswick) is the most popular commercial canning fig in the South. It is a weak growing tree with fruit that sours and splits badly during wet weather. Splitting and souring can be reduced, however, if its fruits are picked just before full maturity and used as preserves. This variety also produces fair-to-good crops on sucker wood the season after freeze injury. The fruit is medium to large with brown skin and light amber pulp. It is prominently swollen at the fruit base with a very open eye. Fruiting is spread over a long period if the tree is pruned heavily. Figs will appear on both current and previous season’s growth. This variety is widely used as a dooryard variety in Texas but because of its splitting and souring problems, it is no longer recommended.

Kadota
This variety (Gentile, White Endich, Dottato) is the commercial fig of California. Varietal trials show it does well in Texas, particularly in South Texas. The fruit becomes rubbery in drier and hotter areas. The eye is open but it is characteristically filled with a honey-like substance which prevents entry of insects and subsequent souring. Fruiting characteristics are similar to those of Magnolia and Everbearing. It will produce on sucker wood the year after cold injury. The fruit is yellow to green with seeds and amber pulp. The fruit is excellent canned or preserved. Do not plant this variety in drier areas of Texas.

Cultural practices
Figs should be spaced 12 to 20 feet apart and should not be fertilized at planting. Figs should be cut back when they are transplanted and survive better if set 2 to 4 inches deeper than they were grown in the nursery. The "heading back" develops lateral branches and reduces water loss from the above ground portion. Since the root system may be damaged during transplanting operations, water uptake may be reduced until they become established. Fig trees planted in late fall often develop root systems before leafing out in the spring, but because young trees are more susceptible to cold injury, it is often advisable to delay transplanting until just before dormancy is broken in early spring. Young trees to be transplanted should be dug with care to prevent root damage. Inspect trees bought from nurseries to insure that roots are healthy and are not damaged. Remove any broken or dried roots and transplant young trees into a hole deeper and wider than necessary for the root system. Crumble the soil around the roots, and pack it down several times during the filling operation to bring all roots into contact with moist soil. After planting, water the tree to settle the soil firmly around the roots. If conditions are extremely dry, watering before the hole is completely filled is beneficial.

Training
Figs should be trained into a single trunk, open vase-type tree if planted in the 200-hour chilling zone. The stool multi-trunk system is by far the most frequently used in Texas because freezes occasionally kill the upper part of the plant. The stool system is common where freezes occasionally kill the upper part of the tree. Figure 1 illustrates the two types of training methods.

Figure 1. Mature figs trees trained to a multi-trunk stool type and single trunk, open vase type (click on image to see larger view).

Pruning
Figs should be pruned very little. Do not prune mature Celeste and Alma trees because this reduces the crop size. Texas Everbearing produces a fair crop following a heavy winter pruning. To stimulate new growth thin out older trees which grow very little each year. Thinning also increases fruit size. Prune the trees enough to stimulate approximately 1 foot of growth each year. Remove all weak, diseased, or dead limbs each dormant season.

Propagation
Figs can be propagated by suckers, layering, or cuttings. Suckers from the crown of the bush are not advisable because they will transfer nematodes from the roots of the mother bush. The easiest way to propagate figs is by stem cuttings.

First, collect six-inch to eight-inch terminal shoots of healthy one-year growth in late winter. Next, group the cuttings in bundles for callusing, as illustrated in Figure 2.
Invert the bundles in a callusing trench from mid-January to mid-April, covering the basal ends of the cuttings with approximately two to four inches of soil (Figure 3).
The callusing trench should be well-drained and weed free. After callusing, place the cuttings right side up in a propagation row (Figure 4).
Cuttings should be planted with one inch above the soil line and six inches below the soil line. They should be spaced six to 12 inches apart in the row. In just one year in the propagation row, the cuttings will develop roots and shoots can make 36 to 48 inches of growth. The small tree will be ready for transplanting during the dormant season.

Irrigation
Soil moisture must be managed carefully because most roots of the fig trees are close to the soil surface and can easily dry out. Figs are very susceptible to soilborne nematodes that feed on small roots and reduce water movement into the tree. For these reasons, apply water to the trees as drought develops. Slight leaf wilting in the afternoon is a good indication of water stress. Mulching with straw or grass clippings helps maintain uniform soil moisture and reduces weed competition for available soil water. Water stress frequently causes premature fruit drop of Texas fig varieties which do not have true seeds. This problem is very common in hot, dry areas when the fig tree is grown in shallow soil and roots are nematode infested. Trees planted in shallow sites are subject to injury or death when the soil is saturated with water. Good water management, including regular irrigation and mulching, helps maintain tree health and vigor and reduces fruit drop.

Dormancy and Cold
Factors influencing a fig tree's susceptibility to cold injury are related to the tree's entrance into dormancy. A mature tree which has lost all of its leaves and becomes totally dormant can withstand much cooler temperatures than a rapidly growing tree at the time of first frost. Limiting irrigation in the fall of the year to reduce growth will encourage the onset of dormancy. A fully dormant fig tree can withstand temperatures as low as 10 degrees F. In North Texas, plant figs along the south side of a building to help reduce freeze damage. Straw mulches placed well over the base of the tree will help to insulate the tree during freezes and help prevent killing the crown of the tree (Figure 5). When trees or limbs freeze, give the tree ample time to grow before removing the frozen limbs then new wood can be produced.
Harvest
Figs should be allowed to ripen fully on the tree. They must be picked as they ripen otherwise, spoilage from the dried fruit beetle can occur. On-the-tree spoilage or souring is caused by microorganisms in the fully ripe fruit. These organisms are usually carried into the open eye of the fig by insects, particularly the dried fruit beetle. Daily harvests and the removal of overripe, spoiled figs can greatly reduce spoilage problems. This is particularly true of varieties which have an open eye. Use gloves and long sleeves when harvesting figs to prevent skin irritation from the fig latex.

Pests
The major problems for figs in Texas are root-knot nematodes, fig rust, fig souring and cotton root rot.

    The root-knot nematode , Meloidogyne sp. , the most important pest that affects Texas figs, is not readily noticed by the average person. They are microscopic soil-inhabiting worms which attack plant's root systems. They attack and feed on roots, causing them to swell or gall, thus interfering with normal uptake of water and nutrients. These galls are easily seen if root samples are observed. Nematode problems may go unnoticed for several years, but as the population builds up, the tree loses vigor and declines gradually. Nematodes infestations can contribute to premature fruit drop. To prevent root-knot nematodes in figs, obtain nematode-free plants and plant in nematode-free soil.

Fig rust is an important fungal disease that attacks the leaves of figs caused by Physopella fici . Fig rust first appears as small yellowish-orange spots on the leaves. These lesions enlarge slightly and may become very numerous as the season progresses. Rust causes complete defoliation of many trees in the state each year, resulting in ragged-looking trees. In addition, trees defoliated early in the season may initiate new growth, increasing susceptiblity to cold injury. Defoliation does not occur early enough to cause fruit loss except in late ripening varieties. Rust is controlled by neutral copper sprays. One or two applications made in May or early June usually keeps trees in fairly good condition until after fruit ripens. In very wet seasons, one or two additional applications may be necessary. A good index for spraying is when the first leaves on the tree have reached full size. The second spray should follow in 3 to 4 weeks. It is extremely important to get good leaf coverage with the spray material. Fig souring is a constant problem in Texas. The first step in preventing losses attributed to souring is to grow recommended varieties, which have a closed eye, a drooping fruit characteristic, and resistance to fruit splitting. Controlling insects and using resistant varieties restrain most fruit souring problems most of the season. Late season infestations may be impractical to control.

Cotton Root Rot or Phymatotricham omnivorum is the number one killer of figs in Texas. This organism is a fungus primarily associated with alkaline soils. This organism kills the roots causing the plant to wither and die in a short time. There is no resistant variety or rootstock. The only control, which is impractical at best, is to completely recondition the soil before planting. This means completely altering the soil pH in the area with a soil acidifier. This type of control is not permanent, however. Several other minor diseases associated with figs can be found but are a problem only in more humid areas.

COMMON CAUSES OF FIG FRUIT FAILURE

Other pests--birds such as blue jays, mockingbirds, and grackles, cause fruit losses each year. There is no suitable control method however, early morning harvests prevent losses to some extent. Also, there are a number of synthetic nettings available which may be used to cover trees during the ripening season.



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