Pinapple

Origin: The pineapple is native to southern Brazil and Paraguay where wild relatives occur. It was spread by the Indians up through South and Central America to the West Indies before Columbus arrived. In 1493 Columbus found the fruit on the island of Guadaloupe and carried it back to Spain and it was spread around the world on sailing ships that carried it for protection against scurvy. The Spanish introduced it into the Philippines and may have taken it to Hawaii and Guam early in the 16th Century. The pineapple reached England in 1660 and began to be grown in greenhouses for its fruit around 1720.

Adaptation: The pineapples is a tropical or near-tropical plant, but will usually tolerate brief exposures to 28° F. Prolonged cold above freezing retards growth, delays maturity and causes the fruit to be more acid. Pineapples are drought-tolerant and will produce fruit under yearly precipitation rates ranging from 25 - 150 in., depending on cultivar and location and degree of atmospheric humidity. They are successfully grown in southern Florida and coastal areas of southern California. The small plant adapts well to container and greenhouse culture and makes an interesting potted plant.

Growth Habit: The pineapple plant is a herbaceous perennial, 2-1/2 to 5 ft. high with a spread of 3 to 4 ft. It is essentially a short, stout stem with a rosette of waxy, straplike leaves.

Foliage: The long-pointed leaves are 20 - 72 in. in length, usually needle tipped and generally bearing sharp, upcurved spines on the margins. They may be all green or variously striped with red, yellow or ivory down the middle or near the margins. As the stem continues to grow, it acquires at its apex a compact tuft of stiff, short leaves called the crown or top. Occasionally a plant may bear 2 or more heads instead of the normal one.

Flowers: At blooming time, the stem elongates and enlarges near the apex and puts forth an inflorescence of small purple or red flowers. The flowers are pollinated by humming-birds, and these flowers usually develop small, hard seeds. Seeds are generally not found in commercially grown pineapple.

Fruit: The oval to cylindrical-shaped, compound fruit develops from many small fruits fused together. It is both juicy and fleshy with the stem serving as the fibrous core. The tough, waxy rind may be dark green, yellow, orange-yellow or reddish when the fruit is ripe. The flesh ranges from nearly white to yellow. In size the fruits are up to 12 in. long and weigh 1 to 10 pounds or more.

Location: Pineapples should be planted where the temperature remains warmest, such as the south side of a home, or in a sunny portion of the garden.

Soil: The best soil for the pineapple is a friable, well-drained sandy loam with a high organic content. The pH should be within a range of 4.5 to 6.5. Soils that are not sufficiently acid can be treated with sulfur to achieve the desired level. The plant cannot stand waterlogging and if there is an impervious subsoil, drainage needs to be improved.

Irrigation: The plant is surprisingly drought tolerant, but adequate soil moisture is necessary for good fruit production.

Fertilization: Nitrogen is essential to increase fruit size and total yield, which should be added every four months. Spraying with a urea solution is another way to supply nitrogen. Fruit weight has also been increased by the addition of magnesium. Of the minor elements, iron is the most important, particularly in high pH soils. Iron may be supplied by foliar sprays of ferrous sulfate.

Frost Protection: Pineapple plants require a frost-free environment. They are small enough to be easily covered when frost threatens, but cold weather adversely affects the fruit quality.

Propagation: Pineapples are propagated by new vegetative growth. There are four general types: slips that arise from the stalk below the fruit, suckers that originate at the axils or leaves, crowns that grow from the top of the fruits, and ratoons that come out from the under-ground portions of the stems.

Although slips and suckers are preferred, crowns are the main planting material of home gardeners. These are obtained from store-bought fruit and are removed from the fruit by twisting the crown until it comes free. Although the crown may be quartered to produce four slips, in California's marginal conditions it is best not to cut or divide the crown. The bottom leaves are removed and the crown is left to dry for two days, then planted or started in water.

Pineapples are planted outside during the summer months. A ground cover of black plastic works very well for pineapples, both as protection from weeds and for the extra heat it seems to absorb. It also helps to conserve moisture. Traditionally, plants are spaced 12 inches apart. Set crowns about 2 inches deep; suckers and slips 3 to 4 inches deep.

Pests and diseases: Mealybugs spread by ants can be a problem. Controling the ants will control the mealybugs. In most commercial growing areas, nematodes, mites and beetles can also be damaging, but these have not been a problem in California.

Harvest: It is difficult to tell when the pineapple is ready to be harvested. Some people judge ripeness and quality by snapping a finger against the side of the fruit. A good, ripe fruit has a dull, solid sound. Immaturity and poor quality are indicated by a hollow thud. The fruit should be stored at 45° F or above, but should be stored for no longer than 4 - 6 weeks.

Misc.: Fruiting can be forced when the plant is mature by using acetylene gas or a spray of calcium carbide solution (30 gms to 1 gal. water), which produces acetylene. Or calcium carbide (10 -12 grains) can be deposited in the crown of the plant to be dissolved by rain. A safer and more practical method for home growers is a foliar spray of a-naphthaleneacetic acid (1 gm in 10 gal water) or B-hydroxyethyl hydrazine. The latter is more effective. The plants usually produce for about four years, but they may last longer in California since the life cycle is slowed down by cooler weather.

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Papaya

Growth Habit: The papaya is a short-lived, fast-growing, woody, large herb to 10 or 12 feet in height. It generally branches only when injured. All parts contain latex. The hollow green or deep purple trunk is straight and cylindrical with prominent leaf scars. Its diameter may be from 2 or 3 inches to over a foot at the base.

Foliage: The leaves emerge directly from the upper part of the stem in a spiral on nearly horizontal petioles 1 to 3-1/2 feet long. The blade, deeply divided into 5 to 9 main segments, varies from 1 to 2 feet in width, and has prominent yellowish ribs and veins. The life of a leaf is 4 to 6 months.

Flowers: The five-petalled flowers are fleshy, waxy and slightly fragrant. Some plants bear only short-stalked female flowers, or bisexual (perfect) flowers also on short stalks, while others may bear only male flowers, clustered on panicles 5 or 6 feet long. Some plants may have both male and female flowers. Others at certain seasons produce short-stalked male flowers, at other times perfect flowers. This change of sex may occur temporarily during high temperatures in midsummer. Male or bisexual plants may change completely to female plants after being beheaded. Certain varieties have a propensity for producing certain types of flowers. For example, the Solo variety has flowers of both sexes 66% of the time, so two out of three plants will produce fruit, even if planted singly. How pollination takes place in papayas is not known with certainty. Wind is probably the main agent, as the pollen is light and abundant, but thrips and moths may assist. Hand pollination is sometimes necessary to get a proper fruit set.

Fruit: There are two types of papayas, Hawaiian and Mexican. The Hawaiian varieties are the papayas commonly found in supermarkets. These pear-shaped fruit generally weigh about 1 pound and have yellow skin when ripe. The flesh is bright orange or pinkish, depending on variety, with small black seeds clustered in the center. Hawaiian papayas are easier to harvest because the plants seldom grow taller than 8 feet. Mexican papayas are much larger the the Hawaiian types and may weigh up to 10 pounds and be more than 15 inches long. The flesh may be yellow, orange or pink. The flavor is less intense than that the Hawaiian papaya but still is delicious and extremely enjoyable. They are slightly easier to grow than Hawaiian papayas. A properly ripened papaya is juicy, sweetish and somewhat like a cantaloupe in flavor, although musky in some types. The fruit (and leaves) contain papain which helps digestion and is used to tenderize meat. The edible seeds have a spicy flavor somewhat reminiscent of black pepper.

Location: Papayas like to be warm with both sunshine and reflected heat, so the hottest place against the house where nothing else seems happy is an ideal location. They also like to be as free from wind as possible, although this is not as critical as their need for sun. Papayas can be grown successfully in shade, but the fruit is rarely sweet. They are best planted in mounds or against the foundation of a building where water can be controlled.

Soils: Papayas need a light, well-drained soil. They are easily killed by excess moisture. The soil needs to be moist in hot weather and dry in cold weather. Since this is the opposite of California's rain pattern, in addition to good drainage, plastic coverings to prevent over-wetting in winter may also be worthwhile. Papayas do not tolerate salty water or soil.

Irrigation: Watering is the most critical aspect in raising papayas. The plants should be kept on to the dry side to avoid root rot, but also need enough water to support their large leaves. In winter the plant prefers to remain as dry as possible. A plant that has been injured by frost is particularly susceptible to root rot.

Fertilization: The fast-growing papaya requires regular applications of nitrogen fertilizers but the exact rates have not been established. Feed monthly and adjust according to the plant's response. They can take fairly hot organic fertilizing such as chicken manure if used with deep irrigation after warm weather has started. Phosphorus deficiency casuses dark green foliage with a reddish-purple discoloration of leaf veins and stalks.

Pruning: Papayas do not need to be pruned, but some growers pinch the seedlings or cut back established plants to encourage multiple trunks.

Frost Protection: Papayas need warmth and a frost-free environment, but can often withstand light freezes with some kind of overhead protection. This can be provided by building a frame around the plants and covering it with bedding, plastic sheeting, etc. when frost threatens. Electric light bulbs can also be used for added warmth. Potted specimens can be moved to a frost-secure area. Prolonged cold, even if it does not freeze, may adversely affect the plants and the fruit. Mexican papayas are more hardy than Hawaiian varieties.

Propagation: Papayas are normally propagated by seed. To start a plant, extract the seeds from ripe papayas and wash them to remove the gelatinous covering. They are then dried, dusted with a fungicide and planted as soon as possible (the seeds loose their viability rapidly in storage). Plant the seeds in warm (80° F), sterile potting mix. Seeds should be planted in sterile soil as young papaya seedlings have a high mortality rate from damping off. Potting soil can be sterilized by mixing 50-50 with vermiculite and placing in an oven at 200° F for one hour. Under ideal conditions the seeds may germinate in about two weeks, but may take three to five weeks. Gibberellic acid can be used to speed up germination in some seasons. Seedlings usually begin flowering 9 - 12 months after they germinate.

Seedling papayas do not transplant well. Plant them in large containers so the seedlings will have to be transplanted only once, when they go into the ground. Transplant carefully, making sure not to damage the root ball. To prevent damping off, drench the potting mix with a fungicide containing benomyl or captan. Set the plants a little high to allow for settling. A plastic mulch will help keep the soil warm and dry in wet winter areas, but remove it as soon as the weather becomes warm. Plant at least three or four plants to insure yourself of having females or plant hermaphroditic plants.

Papaya plants can also be grown from cuttings, which should be hardened off for a few days and then propped up with the tip touching moist, fertile soil until roots form. Semihardwood cuttings planted during the summer root rapidly and should fruit the following year.

Pests and diseases: Thrips, mites and white flies as well as In red spider and fruit spotting bugs are potential problems in some areas. The plants may also be attacked by mildew, anthracnose, root rot and various virus diseases Fruit flies often ruin the fruit in Florida and Hawaii. Nematodes can attack the roots and are often a factor in the decline of individual plant. Gopher damage can be avoided by planting in wire baskets. Papaya plants should probably be replaced every 4 years or so.

Harvest: Papayas are ready to harvest when most of the skin is yellow-green. After several days of ripening at room temperature, they will be almost fully yellow and slightly soft to the touch. Dark green fruit will not ripen properly off the tree, even though it may turn yellow on the outside. Mature fruit can be stored at 45° F for about 3 weeks. Papayas are often sliced and eaten by themselves or served with a myriad of other foods. They can also be cooked to make chutney or various desserts. Green papayas should not be eaten raw because of the latex they contain, although they are frequently boiled and eaten as a vegetable. In the West Indies, young leaves are cooked and eaten like spinach. In India, seeds are sometimes used as an adulterant in whole black pepper.

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Seedless Guava Fruit

True 'Indonesian Seedless' Guava

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Guava

Guavas are plants in the myrtle family (Myrtaceae) genus Psidium, which contains about 100 species of tropical shrubs and small trees. They are native to Mexico, Central America and northern South America. Most likely naturally spreading (by means of ocean drifting) to parts of the Caribbean and some parts of North Africa, guavas are now cultivated and naturalized throughout the tropics, and due to growing demand they are also grown in some subtropical regions.

“Guava is an obscure tropical fruit that’s subtly acidic, with sweetness that intensifies as you eat your way to the center.

Why it’s healthy: Guava has a higher concentration of lycopene—an antioxidant that fights prostate cancer—than any other plant food, including tomatoes and watermelon. In addition, 1 cup of the stuff provides 688 milligrams (mg) of potassium, which is 63 percent more than you’ll find in a medium banana. And guava may be the ultimate high-fiber food: There’s almost 9 grams (g) of fiber in every cup.

How to eat it: Down the entire fruit, from the rind to the seeds. It’s all edible—and nutritious. The rind alone has more vitamin C than you’d find in the flesh of an orange. You can score guava in the produce section of higher-end supermarkets or in Latin grocery stores.

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Mango

Mango trees (Mangifera indica L.) reach 35–40 m in height, with a crown radius of 10 m. The tree is long-lived with some specimens known to be over 300 years old and still fruiting. In deep soil the taproot descends to a depth of 20 feet, and the profuse, wide-spreading feeder roots also send down many anchor roots which penetrate for several feet. The leaves are evergreen, alternate, simple, 15–35 cm long and 6–16 cm broad; when the leaves are young they are orange-pink, rapidly changing to a dark glossy red, then dark green as they mature. The flowers are produced in terminal panicles 10–40 cm long; each flower is small and white with five petals 5–10 mm long, with a mild sweet odor suggestive of lily of the valley. The fruit takes from three to six months to ripen.

The ripe fruit is variable in size and color, and may be yellow, orange, red or green when ripe, depending on the cultivar.When ripe, the unpeeled fruit gives off a distinctive resinous sweet smell. In its center is a single flat oblong seed that can be fibrous or hairy on the surface, depending on the cultivar. Inside the seed coat 1–2 mm thick is a thin lining covering a single embryo, 4–7 cm long, 3–4 cm wide, and 1 cm thick.

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Grapefruit

The grapefruit is a subtropical citrus tree known for its bitter fruit, an 18th-century hybrid first bred in Jamaica.^[1] When found in Barbados it was named the "forbidden fruit"; it is also called the "shaddock", after its creator.

These evergreen trees are usually found at around 5–6 metres (16–20 ft) tall, although they can reach 13–15 metres (43–49 ft). The leaves are dark green, long (up to 150 mm, or 6 inches) and thin. It produces 5 cm (2 in) white four-petaled flowers. The fruit is yellow-orange skinned and largely oblate, and ranges in diameter from 10–15 cm. The flesh is segmented and acidic, varying in color depending on the cultivars, which include white, pink and red pulps of varying sweetness. The 1929 US Ruby Red (of the Redblush variety) has the first grapefruit patent.

The fruit has only become popular from the late 19th century; before that it was only grown as an ornamental plant. The US quickly became a major producer of the fruit, with orchards in Florida, Texas, Arizona, and California. In Spanish, the fruit is known as toronja or pomelo.

Tart and tangy with an underlying sweetness, grapefruit has a juiciness that rivals that of the ever popular orange and sparkles with many of the same health promoting benefits. Although available throughout the year, they are in season and at their best from winter through early spring.

Grapefruits usually range in diameter from four to six inches and include both seed and seedless and pink and white varieties. The wonderful flavor of a grapefruit is like paradise as is expressed by its Latin name, Citrus paradisi.

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Orange

An orange is a type of citrus fruit which people often eat. Oranges are a very good source of vitamins, especially vitamin C. Orange juice is an important part of many people's breakfast. The "sweet orange", which is the kind that are most often eaten today, grew first in Asia but now grows in many parts of the world.

Oranges are round orange-coloured fruit that grow on a tree which can reach 10 metres high. Orange trees have dark green shiny leaves and small white flowers with usually five petals, but six is possible too. The flowers smell very sweet which attracts many bees.

An orange has a tough shiny orange skin. Inside, the fruit is divided into "segments", which have thin tough skins that hold together many little sections with juice inside. There are usually ten segments in an orange, but sometimes there are more. Inside each segment of most types of orange there are seeds called "pips". Orange trees can be grown from pips, but some types of orange trees can only be grown from "cuttings" (a piece cut off a tree and made to grow roots). The segments and the skin are separated by white stringy stuff called "pith". In most types of oranges, the skin can be peeled off the pith, and the segments can be pulled apart with the fingers to be eaten. In some oranges it is hard to take the skin off. With mandarin oranges, the skin, pith and segments can all be pulled apart very easily. Orange skin is often called "orange peel".

Oranges are an important food source in many parts of the world for several reasons. They are a commonly available source of vitamin C. The juice is a refreshing drink. They last longer than many other fruits when they are stored. They are easy to transport because each orange comes in its own tough skin which acts as a container. They can be piled into heaps or carried in bags, lunchboxes and shipping containers without being easily damaged.

Growing: Oranges can be grown, outdoors in warmer climates, and indoors in cooler climates. Oranges, like most citrus plants will not do well unless kept between 15.5°C - 29°C (60°F - 85°F). Orange trees grown from the seeds of a store bought fruit may not produce fruit, and what fruit is produced, may be different than the parent fruit due to modern hybridization. To grow the seed of a store bought orange you must not let the seed dry out. One method is to put the seed/s between the halves of a damp paper towel until the seed germinates, and then planting it. Many just plant it straight into the soil making sure to water it with regularity.

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