Archive for the 'Gardening' Category
Because of the many seeds found in pomegranate fruits, they were regarded as a symbol of fertility by the ancient cultures of Egypt, Greece, and Rome. The Greek writer, Homer, wrote about pomegranates growing at Syracuse, on the island of Sicily. The Bible of the Hebrews records many references to the pomegranate, and the image of the fruit was used extensively in molding and stone sculptures found in Solomon’s temple at Jerusalem, Israel.
Pomegranates, ‘Punica granatum,’ are native shrubs and trees found growing throughout much of the Middle East, and much of Europe. The pomegranates appear to be the dominant landscape trees growing along roadsides of Albania, Montenegro, Bulgaria, and many parts of Turkey. The pomegranate trees appeared in Spain around 800AD by the Moors. Granada, Spain, on the coast of the Mediterranean, got its name from the Latin name of the pomegranate, ‘Punica granatum.’ The French named the new explosive weapon, hand grenade, after the Latinized ‘Punica granatum,’ pomegranate, because the impact from the explosion of the weapon scattered the numerous small pieces of metal like the many seeds of the pomegranate fruit.
Cultivated extensively in Spain, pomegranates moved with the missionaries into Mexico, California, and Arizona in the 16th century. In America pomegranate trees were introduced into California by Spanish missionaries in the mid 1700’s. Pomegranate fruits are ruby-red fruits about 2 to 5 inches in diameter. They resemble small apples, and derive their name from the French word, ‘Pome,’ meaning apple. Fruits have numerous seeds are each surrounded by a pink to purplish-red, juicy pulp which is the edible portion. The pulp is somewhat puckery to the taste.
Pomegranates, ‘Punica granatum,’ are dense, bushy shrubs 6 to 12 feet tall with thorny, slender branches that may be trained into small trees. Orange-red flowers appear on new growth in the spring and summer and are bell-shaped and vase-shaped. The vase-shaped flowers are normally sterile, so they will not develop into fruit. The fruit contains numerous seeds surrounded by sweet, pink, juicy, tasty pulp covered with leathery-brown to red, bitter skin, which is easily peeled. Pomegranate juice stains can be difficult to remove from clothing. This juice was used by the ancients as an ink or dye, because of its persistence in staining permanently. The thick skin surrounding the pomegranate is high in tannins, and the ancients dried the skins and made leather-like products; the thick skin gives the fruit a long shelf life, lasting up to two months when cooled.
When trained as a tree, pomegranates grow toward a bushy habit with many suckers arising from the root and crown area. Tree-type plants can be produced by allowing only one trunk to develop. Additionally suckers can be removed frequently around the main trunk.
Pomegranate trees pollinate themselves. Severe fruit drop during the plant’s juvenile period (2-3 years) is not uncommon. Fruit drop is increased by practices favoring leafy growth such as over-fertilization and over watering. Avoid putting young plants under stressful conditions. Mature trees set and hold fruit better than younger trees.
Mature pomegranate trees develop a thick bark, which is cold hardy to temperatures tested in Georgia and have withstood the zero degrees Fahrenheit experienced in January of 1984. Younger shrubs and trees of pomegranate have thin bark that do not show a high survival rate in lower temperatures, but the plant may be regenerated from the roots in the spring. Light annual pruning of established trees encourages the development of good quality fruit. Excessive or late applications of fertilizer tends to delay fruit maturity and will reduce color and quality.
The commercial orchard production of pomegranates is mostly concentrated in California, and the fruit begins to appear in Eastern markets in mid-October, just in time for the Thanksgiving and Christmas seasons.
Like picking wild scuppernongs from a childhood vineyard, this is an experience that children always remember–the fun and the fulfillment of the happy days during childhood preserved in the memories of growing up. A century ago every farmer had a pomegranate plant in his yard that he had grown from a seed. Some of these plants developed into bushes and some grew into trees.
The fruit is strange looking in appearance and when opened with a knife appears even stranger inside looking like hundreds of juicy red, individual pulpy fruits, each with a removable seed
Pomegranate juice is one of nature’s most powerful antioxidants. Pom Wonderful Pomegranate juice has more naturally occurring antioxidant power than any other drink, more than red wine, green tea, blueberry juice and cranberry juice. Antioxidants help your body guard against free radicals; molecules that can cause premature aging, heart disease Alzheimer’s, even cancer. Drink a glass today! Researchers have shown that people who drink 2 oz, of pomegranate juice each day for one week increased their body antioxidant activity by 9% in the American Journal of Clinical Nutrition
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The documentation of ancient plums growing in antiquity is sparse. The best evidence of that oldest existence is best documented through America’s most famous pomologist, Luther Burbank, who reported in his twelve volume botanical literary classic, Small Fruits, Volume IV page 136, that the European plum, Prunus domestica, and its ancestor fruit originated in the Caucasus Mountains near the Caspian Sea. Burbank detailed evidence that the prune (dried plum) was a staple food of the Tartars, Mongols, Turks, and Huns “who maintained a crude horticulture from a very early period.” Several websites have put forth the absurd idea that, because the European plum, Prunus domestica, seeds were not found in the ruins of Pompeii after the eruption of Mount Vesuvius in 79 AD, “whereas, most other old world fruits were,” that this plum could be concluded to be a recent hybrid of “spontaneous chromosome” doubling to produce a hexaploid offspring.
The earliest reference to plum history in the American colonies came from Prince Nursery of Flushing, New York, that was established in 1737 and reported in 1771 in an advertisement “33 kinds of plums” for sale. These plum trees were no doubt European plums, Prunus domestica.
After the year 1755, Henry Laurens, who was a guest and friend of Wililam Bartram, introduced olives, limes, ginger, everbearing strawberry, red raspberry, and blue grapes into the United States. From the south of France he introduced apples, pears, plums, and the white Chasselas grape which bore abundantly. Henry Laurens lived in Charleston, South Carolina and served as a President of the Continental Congress.
William Bartram described two species of American plums in his famous book, Travels, in his 1792 trip to Georgia, where he identified the Chicasaw plum, Prunus chicasaw, and in Alabama, he found a wild plum, Prunus indica.
Luther Burbank contributed more toward improving and hybridizing plum trees of different species than any other person in history. His work on the plum group of stone fruits stands apart from any other person for his unequaled contribution to improving various fruits that are grown and enjoyed today.
Burbank states that his importation of twelve plum seedlings in the year 1885 was the “most important importation of fruit bearers ever made at a single time into America.”
Burbank brought plums from all over the world and intercrossed them in a giant “melting pot” to produce the best characteristics and to reject the wrong ones. These genetic plum mixtures were recombined for many generations and resulted in plum hybrids today that are so different from the original species as to appear to be new species.
Burbank stated that he spent more time hybridizing plums than with any other plant breeding program, and he reported that he screened 7.5 million plum hybrid seedling crosses before releasing outstanding cultivars for sale. His famous line of plum trees that were popular in the late 1890’s are still admired and grown commercially for sale and in backyard gardens today, such as Burbank, Santa Rosa, Wickson, Golden, Satsuma, Shiro, and Ozark Premier. His first huge success was applauded by USDA Professor, H.E. Van Deman, who suggested that the pick-of-the-lot creation of Luther Burbank be named after its creator, thus, the “Burbank Plum.”
Most of Burbank’s plum tree successes come from his combining the genetic materials of 4 major types of plums whose ancestry came from Japan, Europe, America, and China.
The most successful crosses between plums come from the Japanese plum, the most exotic, ‘Satsuma,’ the name suggested by Professor H.E. Van Deman of the USDA, who identified it as being imported from the Satsuma province in Japan. This unique plum grew a red skin with a pale-blue netting bloom overlay. The pulp was dark purplish-red, firm, tasty with an excellent quality to be preferred for home use.
Burbank’s experimental species were Japanese plums, Prunus triflora, that grew wild in Japan and were pickled by the natives. The Japanese plums grew in many colors in skin from white to purple, were large and rather tasteless, but the Japanese natives ate them while green and hard. The Japanese plum genes appear to dominate most hybrid plum offspring. Chinese plums, Prunus simonii, were aromatic, with rich colored skins, a small pit, but the skin cracks and the fruit tastes bitter.
European plums, Prunus domestica, are varied in sizes, largest to small, sweet or sour, complex genes, many colored skins, very widely adaptable, good for fresh eating, drying, or canning. The disadvantage: they are too juicy or watery. “Green Gage” is a well known standard European cultivar. Prunes are very high in sugar content.
Several species of America plums are very hardy and productive to the extent of covering the ground in spring with several layers of fruit. These plums can be tasty but have poor shipping quality. Burbank released an excellent hybrid strain of this cross called “Robinson plum.”
Several American native plum species have been used in hybridization experiments by Luther Burbank. American plums, Prunus Americana, wild goose plums, Prunus hortulans, the chicasaw plum, Prunus augustifolia, Western sand plum, Prunus besseyi, the beach plum, Prunus maritima, and the California wild plum, Prunus subcordata. These native plum trees are unusually cold hardy and frigid temperatures do no harm to them, even in the northernmost part of the central United States.
The “Myrobalan” plum originated as a French species, Prunus cerasifera is used extensively as a peach tree and plum tree rootstock that tends to be compatible with the resulting fruit tree union and appears to be highly resistant to nematodes and root diseases.
Burbank’s goal in hybridizing plums was to produce a tree that had “stability, novelty, variety, hardiness, beauty, shipping quality and adaptability.”
The plum leaves and twigs exhibit many subtle characteristics that can be experienced by the plant hybridizer to predict the future characteristics of fruit that will be grown from small seedling crosses. Most hybridizers known from experience a predictable outcome, even though these plant qualities are too intangible to explain to an audience, like changing facial expressions or minute variations of color changes. If the leaves of a plant are dark red, the fruit will be red. This same phenomenon is applicable to flowers such as the canna lily leaf color, and the red rhizome color; or in the crinum lily cultivars, a red bulb means a red flower; a light green bulb means a white flower.
Luther Burbank developed a seedless plum by hybridizing a French plum cultivar, “Sans noyaii.” These plums develop into various skin colors ranging from white to yellow, orange scarlet, crimson, violet, deep blue, almost black, striped, spotted, and mottled. These seedless plums were delicious and unique, but were never commercially successful with growers or with public demand.
Burbank crossed many plums that had a tendency to produce fruit with a high sugar content, like the sweetness of figs, pineapple and oranges. This high sugar content makes it possible for the plum (prune) to insure long term preservation, when it is dried. The prune contains a thick and tough skin of such texture that is required to not crack when the commercial drying process begins and proceeds to deliver a tasty, honey-sweet fruit that lasts well.
A prune will not dry properly into a marketable fruit, unless the plum contains a sugar concentration of at least 15%. Before drying, the prune is submerged briefly into an alkali solution that prevents future fermentation by preventing microbes from growing on the surface of the skin. For satisfactory prune production commercially, a prune tree must be a reliable grower with an annual substantial crop of fruit. The prune must ripen early, when the days are long and warm and must drop from the tree to avoid expensive picking costs at the proper ripening time. The prune fruit must cure and dry to a black color and grow a small pit. Most prune hybrids have been hybridized from the European plum, Prunus domestica.
Many cultivars of Plums are recommended for planting: Blue Damson, Chicasaw, Elephant Heart, Green Egg, Methley, Morris, Stanley, Au Amber, Au Homeside, Au Rubrum, Black Ruby, Byrongold, Ruby Sweet, Six Weeks, and Plumcot are just among the few varieties of trees offered in the market today.
There are also three ornamental varieties of flowering plum trees recommend for planting: Newport, Prunus cerasifera ‘Newport’, Purple Pony Prunus cerasifera ‘Purple Pony’, and Red Leaf Plum Prunus cerasifera ‘Thundercloud’, flowering plum trees.
Burbank developed purple leaved plum trees from a French plum ancestor with purple leaves, Prunus pissardi, that commercially are sold as ‘Thundercloud’ flowering plum, Vesuvius, and Othello. Some of these red leaf flowering plums developed by Burbank grew delicious red fruit in addition to the beautiful red ornamental leaves.
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Japanese persimmons, ‘Diospyros kaki L.,’ were introduced into the United States from Japan by Admiral Perry who discovered the fruit growing on the coast of Southern Japan in 1851.
Most of the early Japanese persimmon introductions in 1828 were sprouted from seed in Washington, DC, but were unsuccessful, because of the unusually cold winters experienced during that period.
The USDA introduced grafted cultivars of Japanese persimmon into California and Georgia beginning in 1870, and many of these experimental persimmon tree trials were begun in Central Florida in the early 1900’s at the University located in Gainesville, Florida.
One thousand cultivars of Japanese persimmon are available from Japan, but from the hundreds of tree cultivars tested in the United States during the past years, only a handful of commercial trees should be considered by the home gardener for reliable fruit production.
The cultivars of Japanese persimmon trees recommended for home gardeners are Fuyu, Fuyugaki, Giant Fuyu, Chocolate, Eureka, Hachiya, Jiro, Tam-o-pan, and Tanenashi.
Many cultivars were planted in Florida by Professor Hume of the University of Florida at Gainesville, Florida during the early 1900’s. The trees were a sensation because of the prolific early bearing and the observation that the trees ripened into large crops of colorful, juicy fruit in late fall when very few fresh delicacies are available. Reports of early Japanese persimmon tree orchards show that in excess of 22,000 trees were being grown commercially in Florida alone. The Japanese persimmon trees are classifieds into two categories using two terms that confuse most people. The use of the term “non” is interpreted by most people as a negative, meaning a tree that demonstrates a less desirable quality. Japanese persimmon trees produce fruit that is non-astringent or astringent. The non-astringent term in this case is more desirable for eating to the prevailing garden public, because it contains a “non” bitter taste in the green or hard fruit state. Eventually the astringent Japanese persimmon fruit will develop a juicy, flavorful, very desirable, taste when it ripens to the point of being soft. The peak flavor of a Japanese persimmon never really climaxes until both the non-astringent and the astringent persimmon both ripen completely on the tree to the point of softness. The use of these terms in recommending the purchase of Japanese persimmon trees has been unfortunate, to the point of discouraging many gardeners from planting trees of the astringent persimmon cultivars. Plum trees, for instance, are not classified into two categories of sour and sweet, even though a hard green plum before fully ripening is sour to taste, yet it becomes pleasantly sweet and juicy in the soft colored stage.
Some botanist historians argue that the Japanese persimmon tree documented as growing there one thousand years ago actually originated in China. This argument is often repeated by academics, when national origins of plants are debated about many other plants, but the argument is meaningless. It is realized by geologists that the land boundary of Japan was united to the continent of Asia at some past period of ancient history.
Japanese persimmon fruits are produced in great numbers by California orchardists and the fruit begins showing up on grocery shelves around Thanksgiving. South American persimmon fruit production matures at different seasons than persimmons, ripening period in America, so that many grocery stores can stock this delicious tasty fruit year round. Japanese oriental fruits can be stored for two months for future consumption at a refrigerator temperature of 30 degrees Fahrenheit. Read the rest of this entry »
Peach trees, Prunus persica, are originally believed to have come from China to the Mideast through the trade routes known to extend to Turkey and Iran (Persia). The peach seeds could be used to plant and grow trees throughout North Africa and Europe and finally were introduced to America in the mid 1500’s. The first appearance of peaches in China may date back to 2000 BC.
Historians believe that peach trees were first introduced into the colonial settlements of the United States by the French explorers in 1562 at territories along the Gulf coastal region near Mobile, Alabama, then by the Spaniards who established Saint Augustine, Florida in 1565 on the Atlantic seaboard. The peach trees were planted from peach seed imported from Europe in an effort to establish a self sustaining, agricultural. fruit tree product to feed the colonists. American Indians spread the planting of the peach trees throughout vast territories by transporting the peach seed to other tribes that lived in the interior regions. This new crop of fruit was fast growing, producing a delicious peach two or three years from planting. The trees were so productive and vigorous that sometimes, widespread impenetrable thickets became established from the peach seeds that fell to the ground from fruit unharvested. The illusion was formed by settlers after 1600 that the peach trees were native to the United States, since they were so widely spread and grew so vigorously everywhere.
Captain John Smith wrote about peach trees that were growing in Jamestown, Virginia in 1629. William Penn recorded in 1683 that dense, native thickets of wild peach trees were full of fruit just north of Philadelphia, Pennsylvania.
The first plant nursery to become established in the United States was the Prince Nursery of Flushing, New York, in 1774 that sold grafted cultivars of peach trees to customers. General George Washington visited this nursery and had previously purchased fruit from them. An extensive group of grafted peach trees was sent to the Thomas Jefferson fruit tree orchards from Prince Nursery. President Thomas Jefferson was instrumental in the importation of many new agricultural products from Europe through his influence as Minister to France before the American Revolution. The aggressiveness and monumental fruit production of peach trees impressed him to establish a “living fence,” that encircled his expansive gardens at his home at Monticello, Virginia, in 1794. Jefferson found many other uses for peach trees such as the brewing of brandy in 1782. Jefferson wrote to his granddaughter, Martha, in 1818 that a slave “is busy drying peaches for you.” These sun-dried peaches were called “peach chips” and retained a good quality for eating, even after months of storage. Peaches were juiced and mixed with tea to form a delicious drink. In December of 1795, Jefferson planted 1151, peach trees after he had experimented with planting in 1807, the “black plumb peach of Georgia,” (Indian Blood Cling Peach). This naturalized peach wonder had been planted throughout the State of Georgia by the Indians and was a dark-red velvety color with tiger-like striping. This fragrant peach was extremely desirable because of its rich coloring and taste. Also, this peach was a perfect size to peel and pickle into a Southern holiday treat. This aromatic peach was ideal to make into jams, preserves, cobblers, pies, cakes, and ice cream. Jefferson believed that this Indian cling blood peach was a cross between naturalized peach trees and a French cultivar peach, “Sanguinole.”
William Bartram, the famous American botanist and explorer, wrote in his book, Travels, in 1773 several accounts of his observations of ancient peach and plum orchards growing in Georgia, South Carolina, and Alabama. Bartram visited the ruins of a French plantation in 1776 near Mobile, Alabama, and recorded “I came presently to old fields, where I observed ruins of ancient habitations, there being abundance of peach and fig trees loaded with fruit.”
Peach trees are grown primarily as a fruit tree; however, great interest in the non-fruiting, flowering peach tree was shown by President Thomas Jefferson who planted a double flowered tree that spectacularly bloomed at his home in Virginia in 1805. Flowering peach trees rate high, and desirable new cultivars of ornamental peach trees are available for planting and flowering with colors of white, pink, red, and peppermint (a mixture of red and white flower petals). These flowering peach trees are sterile in fruit production and bloom early in the spring, loaded with large colorful clusters of single or double flowered peach petals.
Peaches are less popular as a fresh fruit than a few years ago, primarily because most commercial peach cultivars (varieties) are tailored by hybridizers to grow and ship as a firm fruit. The firmness of these peaches is important when a grower considers shipping the peach fruit long distances, but not enough attention has been given by plant hybridizers to saving the ancient qualities of aroma, juiciness, flavor, and seed separation from the pulp. Another problem damaging fresh peach sales is that the labor hired to pick the fruit from the tree is not properly trained nor personally concerned in the ultimate ripening of the peach fruit into a juicy, soft, delicious, tasty peach. The peaches are simply picked too soon and too firm to provide a fruit product that compared to a backyard orchard, tree-ripened delicacy that our older citizens often experienced in their grandfather’s back yard garden.
Most of the peaches grown by commercial orchards today are fruits that are harvested while too firm with a seed that clings to the pulp called a “clingstone” peach. The best flavored peaches ripen soft and the seed easily separates from the edible portion, and these are called “freestone” peaches.
Peach trees grown in the United States differ greatly from the aggressive, disease resistant, tasty, aromatic fruits grown by the early Americans. Over the centuries, the immune qualities of the peach trees to insects and diseases have been bred out by hybridizers, and these qualities have been replaced by inferior genes that make it difficult to buy a good flavorful peach at the store. The alternative to this problem is to buy tree ripened soft fruit at a fruit stand, pick-your-own orchard, or to grown your own backyard garden peaches concentrating on planting and growing old cultivars of the non-commercial home garden types.
Peach trees in American have steadily declined in vigor in the past 300 years, to the point that the life expectancy is only 15-20 years or less. This factor has been explained by some fruit tree observers as due to an array of incremental factors, such as disease and insect weakening of the tree and leaves, nematodes, and improper soils and drainage; however, these problems pre-existed in the environment, when peach trees were introduced into America. The likely explanation of peach tree decline is more probably connected to the weak gene immunity that has appeared in peach tree hybridization focused toward commercial tree production that ends with an early, firm peach, clingstone, with shipping advantages to distant markets.
The peach tree grows into a handsome canopy of dark-green rich foliage to a height of 6 to 10 feet. Most peach trees available in the United States are adapted and grown successfully in over 30 states. The grafted semi-dwarf peach trees are self pollinated, even before the flowers fully open, and the tree is cold hardy to negative 20 degrees Fahrenheit; however, the red to pink delicate flowers can be damaged by temperatures below 28 degrees Fahrenheit. Some orchardists like light frosts that will thin the bloom set, producing larger fruit. If extremely heavy flowering occurs, the excess flowers can be removed to 6 inch intervals, or by a chemical thinning that results in a much more marketable crop of fruit.
A developing peach can grow in various sizes of individual fruits on the same tree that requires considerable grading before marketing. The peach is covered with a characteristic fuzz that some growers prefer to reduce or removed mechanically before sales. A nectarine is nothing more than a fuzzless peach, even though certain distinct cultivars of nectarines are offered. In his classic 12 volume book of botanical insight in 1921, Luther Burbank in Fruit Improvement believed that the peach had evolved from a nectarine-like ancestor with the fuzz developing as a shield of protection, unlike the fuzzless nectarine. He theorized that the fuzz shielded the fruit from sunshine, moisture, wind, insect, and disease damage. The nectarine, he felt, was repressed by evolutionary restraints, because the nectarine lacked fuzz as a protective armor. The cousin of the nectarine, the almond, was crossed by Burbank in order to create a nectarine fruit with an edible almond pit, thus two crops from one hybridization, a fruit and an edible nut. Burbank also performed many interspecific crosses of peach with nectarine. The peach is quite fragile and subject to bruising if handled roughly.
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