There is no better region in the world, for the cultivation of fruits, than the middle and upper districts of South Carolina, and the southern portions of North Carolina. Apples, peaches, pears, plums, apricots, nectarines, and melons, grow in the greatest abundance, profusion, and of the highest excellence. But Columbia, and its immediate vicinity, is the paradise of fruits, flowers, and every species of shrubbery.

The system of culture adopted by northern cultivators differs in many respects from that suitable to this State. Mulching - a practice so universally recommended by writers upon the subject of fruit culture - has many disadvantages in this region. Owing to the more powerful effects of our sun, and the greater length of our summer, all species of insects are in greater abundance, and their ravages surpass anything known at the North. Millions upon millions of these pests of the flower garden and orchard, are brought into life by the heat long after the same species have entirely disappeared at the North. These secrete themselves under the tan bark or straw used for mulching, and there commit depredations of the young trees, safe in their retreats. A friend and neighbor who had adopted this system of mulching, informed me that a young apple-tree, one and one-half inches in diameter, had been completely destroyed by a caterpillar. He had made his way under the bark, and had actually eaten out the whole of the wood for a space of three inches! The tree presented no signs of decay.

The bark was sound, and apparently healthy, but, on bending the tree slightly with the hand, it snapped off at the ground.

The finest apples are grown in the lower districts of North Carolina and the upper portions of this State. Union District is perhaps as favorable a locality for the culture of this fruit as any part of it or South Carolina.

The peach grows so luxuriantly, and bears such abundant crops without any attention, that it is regarded as a waste of time to cultivate it with care. Many new varieties have been originated, in this district, from seedlings accidentally growing in fence corners and waste places.

The yellows are unknown in this climate; but the borer is troublesome, and it on the increase, owing to the fact already stated, of the exuberance of insect life in this climate. Peaches have not yet become a profitable market fruit They are so abundant everywhere - growing so rapidly and frequently, becoming troublesome from their vigorous growth - that, even in our cities, the demand for them is very limited, although it is said that a citizen of Edgefield District, during the last season, realized $5,000 by shipping peaches to the New York market.

The commonly received dogma, that the apple does not furnish a good stock for the pear, has proved untrue in this locality. Many of the oldest pear-trees in the country are upon this stock, and they are still vigorous and fruitful. There is a tree now standing in this village about which the following tradition exists: A pear was grafted on a stock of the June apple, and grew rapidly and luxuriantly. In a few years it produced fruit, and the first crop was of June apples! Every crop since has been of pears. This fact is well authenticated. Governor Johnson, of this State, was so much struck with this singular freak of nature, that he examined the tree himself, and sent an account of the occurrence (over his own name) to the Spirit of the Times, then supposed to be the best paper for the publication of such items.

A remedy has been long sought to prevent peach-trees which have been allowed to form forks from splitting when overladen with fruit. It has at length been discovered. Take two of the smaller limbs growing on the sides next the fork, and twist them around each other, but not too tightly. Do this at the commencement of the growing season, so as to form a union between the two forks. These limbs will readily grow together, and form a solid branch of uniform thickness, extending from one of the branches of the fork to the other, which, when full-grown, renders it impossible for the tree to split. If the end of each limb is cut and adjusted to the other at the point of final contact, as in splice grafting, it will facilitate the union, and hasten the growth.

A beautiful and singularly-shaped tree may be grown by taking advantage of this principle. Plant in good soil two peach-trees - say two years old from the seed; let the trees be such as have not been trimmed or cut back. They will probably be from six to eight feet high, and free from side branches. Plant six feet apart, and twist together, so that the united limbs will form an arch - say four feet from the ground at its highest point. Upon the upper side of this arch, let all upright shoots grow - say eighteen inches or two feet apart, and pinch off all others. These upright shoots may then be budded with choice varieties, and permitted to mature their fruit. I have found this method very useful for testing seedlings. The sap being retarded by the wrapping or twisting of the trees, the growth is not so vigorous, and early fruiting is the consequence. If a shoot which has been budded for testing, prove worthless, cut it off, and its place will be soon supplied.

Pears are grown here mostly as standards, and mostly on free stocks. A few zealous amateurs have recently introduced them on quince stocks, but they have not yet been sufficiently tested. The great objection to peach culture is the uncertainty of the crop. Our springs are so early and so variable, that the fruit is often killed by spring frosts. Once in four years may be assumed as an average of the abundant seasons.

Cherries will not succeed here. The common morello grows and bears well, but the finer varieties (the Bigarreaus and Dukes) it is a waste of time to plant. The cause is unknown. Cherry-trees, in my grounds (seven years old from the bud), have not yet fruited, and much older trees in the vicinity are in the same condition. There is always a profusion of bloom in the spring, and the tree gives promise of an abundant harvest, but it is all a " take in." The fruit never sets.

The "curculio" commits greater ravages here than in your colder climate.

Salt, chickens, swine, and most of the remedies recommended for this pest, are all nonsense. The only remedy is that of shaking the trees, and catching them in sheets; bat this is so troublesome, in large orchards, that it is really no remedy at all.

The olive grows in great luxuriance in the lower portions of the State. Oranges and lemons are grown, in the open air, in many places on the sea-board.

I have endeavored to give yon thus a brief account of our fruits. I believe that most fruits grown here are superior in flavor to those grown in the North. Our summer's sun ripens everything, but it would afford me the greatest pleasure if you or your readers could procure a good basket of our early summer peaches; they are so far superior to those grown with you, that you would scarcely recognize the fruit.