Perhaps, in our latitudes such a perennial plant as citron is far from being known to everyone, but experienced plant growers are probably already familiar with its description and all its advantages. However, there are quite a few varieties that exist today, and if you suddenly decide to grow citron in your area, then it is better to know their characteristics. On the most popular of them and will be discussed further.
"Hand of Buddha"
The "Buddha Hand" variety belongs to the group of palmar citrons and is very popular not only in the West, but also in Japan and China, where he is often credited with miraculous properties. For example, many sincerely believe that a person who grew this plant will be able to live happily ever after.
As for the specific botanical description, it should be noted that this citron is one of the largest representatives of citrus fruits and grows up to 40 cm in length. 
The fruits have an oblong shape and outwardly strongly resemble a brush of bananas or tentacles, which is why the unusual name of the fruit appeared. Inside the citron "Buddha's Hand" there are seeds that look like pumpkin seeds, and the top is covered with ribbed peel.
On average, the weight of the fruit reaches about 400 g, and they, like other parts of the plant, are characterized by excellent aroma. Many people consider the “Buddha’s Hand” to be ordinary citrus, like the same lemon.
Important! Do not confuse citron with lemon, because besides the similarity of the names of plants in different languages, they are completely different and differ from each other not only in appearance, but also in the taste properties of fruits.
"Pavlovsky"
An adult plant of citron Pavlovsky does not grow above 2 m in height, while possessing rather long branches with prickles. The leaves are shiny and large, dark green color.
The same large and flowers, mostly white, but on the outside of a pink shade. All of them are collected in brushes of 3-5 buds, although single specimens are less common.
The average weight of the fruit of an unusual lemon — Pavlovsky citron is about 300 grams, and because of the characteristic tuberous skin, it got its second name - “shishkan”. Under the yellow lemon peel there is a small, light and sour flesh, with a slight bitterness. 
This sort of citron is self-fertile, but after blooming the flowers it is better to apply pollen on the pistils with a soft brush, and it is not necessary to normalize the buds: the self-regulating system of the citrus plant will do everything itself, with the result that the most optimal ovaries remain on the branches.
Important! After each increase, it is necessary to perform the formation of the crown.In wintertime, Pavlovsky citron feels much more comfortable than a similar lemon variety: it not only develops well, but also bears excellent fruits. However, if you fail to protect it from drafts, the plant may well get sick.
"Grandis"
In comparison with other citrus fruits, the Grandis variety citron (or as it is also called Pomelo) has the largest dimensions, since the height of an adult tree often reaches 15 m.
Of course, if you wish, you can find undersized variants of this variety, often with drooping branches. Due to this, Grandis can be grown as a room citron, for example, from a stone. 
Its fruit reaches a weight of 1 kg, while possessing a pleasant taste and all the same characteristic aroma. It is logical that in the wild, the parameters of the plant will be somewhat large, in particular, the weight of the fruit is often 8-10 kg.
All of them have a rounded pear-shaped shape and are distinguished by the yellow color of the thick peel and the orange flesh. Flowers in the wild "Grandis" white, and on the branches there are thorns.
Did you know? In East Asia, citron is a symbol of happiness, wealth and longevity.
"Piretto"
Citrus varieties "Piretto" is a small, slowly growing tree (or shrub), up to 4 m in height. The growth of branches differs in different intensity, and in the axils of the leaves are short and sharp thorns.
The leaves are evergreen, have a characteristic "lemon" aroma and are oblong-ovate or ovate-lanceolate, reaching a length of 20 cm. The flowers can be either bisexual or only male or female, mostly white in color, but with different shades.
Oblong or oval fruit reaches 20-30 cm in length and differs in rough and uneven skin, which, when ripe, has a pale yellow color. 
This variety of citron prefers a subtropical and moderately warm climate, as more than other types of citrus are sensitive to cold and can lose all their leaves even at 0 ° C.
The most suitable temperature regime for normal vegetative growth and reproduction of citron ranges from + 23 ... +25 ° C, but lowering this value to + 4 ° C often leads to disruption of vegetation.
"Uraltau"
The variety is presented in the form of a remontant tree, reaching a height of 3.5 m. Crohn is characterized by medium thickening and drooping branches. Bark - olive-gray, bare shoots - curved, brown.
The leaves have a wide oval shape and are quite large in size, smooth to the touch. The sheet plate itself is smooth, but at the end there are small notches. The diameter of the goblet flowers varies within 2-3 cm, while the size of the ovoid and slightly ribbed fruits reaches 150x120 mm.
Their base is more elongated, and the tip stands out rather weakly. The peel of the fruit in citron varieties Uraltau dense and lumpy, as well as rather thick oily and shiny. The main color is greenish yellow. 
The flesh of the fruit is juicy, sour-sweet in taste and exudes a light aroma. The average weight is about 260 g, although under favorable growing conditions, this figure often reaches 500 g.
Among the positive characteristics of the cultivation is the high resistance of the variety to diseases and pests.
Learn more about citrus fruits like mandarin and calamondin.
"Bicolor"
It is considered a modern Italian variety that is distinguished by its acidic fruits. It was discovered in the second half of the twentieth century in Tuscany and the original name sounds like "Cedrato di Lucca".
The shape of the fruits is round and they have a constriction at the equator. As they mature, their color acquires a reddish-brown hue, although the lower part always remains green.
Basically, vertically growing shoots are formed on the bush, and all branches are covered with small spikes. The shape of the leaves rather resemble lemon and painted in dark green. All buds are collected in a brush, and their color is purple or thick pink. 
Canarone
Another variety of citron, which in many respects resembles a lemon. It was first described in the 17th century, but by the 20th century was considered lost, until Paolo Galeotti discovered living plants during the restoration of citrus fruits in the territory of the commune of Cannero Riviera in Piedmont.
The variety Canarone is presented in the form of a powerful bush with strongly closed branches that grow mainly in the upward direction.
Leaves - peaked, small in size. Young shoots - purple and usually collected in groups, although often grow one at a time. Buds are collected in a brush and have a purple color.
Fruits are yellow and large, with a well-marked papilla at the end and a well-marked circle around it.
Pompeia
Citron varieties "Pompeia" is presented in the form of fruit with a wrinkled and uneven yellow skin, rather coarse in section (its thickness often reaches 1 cm).
There is no bitterness in it and it has a neutral lemon flavor. Inside the fruit there are relatively few pits, and the flesh is juicy and sour, with the smell of sweet lemon caramel in the cut. 
Pompey attracts the eye with its unusual shape and protruding pompa, because of which this citron got its name.
Pompeia is made from candied fruit, Sa Pompia dessert and liqueur with a unique aroma.
Did you know? Citron fruits can significantly alleviate the manifestations of seasickness, and in ancient times they were used to prepare various antidotes.
"Etrog"
This variety of citron is represented by shrubs and small trees with an open habit of growth. The plant is very thermophilic, therefore it is extremely sensitive to frosts.
The fruit is in many ways reminiscent of an oblong lemon, although if you look at its shape more closely, it looks more like a candle flame. Having reached full maturity, it will be larger than the usual lemon. The flesh is sour and pale yellow.
It has a thick and lumpy rind with a glossy structure and a great aroma, with characteristic violet notes. All fruits are very tightly kept on the tree and contain a lot of seeds. 
Purposefully, the Etrog citron variety is grown mainly for ritual use by the Jews at their traditional harvest festival "Sukkot", which takes place in September or in October. Representatives of this nation believe that this fruit is mentioned in the book of Leviticus (23:40).
After reading the different varieties of citron, it is easy to understand what it is, but if you are going to grow a plant on your plot, then before choosing a seedling, carefully study all its features, since not all of them successfully take root in our latitudes.
