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The 'Rough' Lemon, Citrus jambhiri

The rough lemon with the bumpy peel

The 'Rough' Lemon, Citrus jambhiri
 
 
 
 

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Article number: 2200450

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This product will be released at 1 April 2019

£37.40 *
 
 
 
 
 

Product information "The 'Rough' Lemon, Citrus jambhiri"

This unusual lemon with the "Beauty and the Beast" look originally came from northern India and was described for the first time by the well-known plant hunter Frank N. Meyer. Therefore, the variety or hybrid is often referred to as Citrus jambhiri 'Meyer'. However, from his discoveries and introductions in the lemon sector the Meyer lemon was certainly more successful...
 
This lemon, as is so common throughout the citrus family, where everything can cross with anything, goes back to a natural hybridisation of lemon x mandarin or orange. Taking into account the general robustness of Citrus jambhiri, one has to rather guess that mandarin oranges are the original parents. This robustness, in addition the resistance to nematodes, has meant that Citrus jambhiri is often used as a rootstock for citrus trees, e.g. it was and will be used in Brazil. There is also a commonality with the Volkamer lemon, which somewhat resembles the Jambhiri lemon regarding the juice and the taste. Some authors also claim that there is a rather flat-peeled type of Citrus jambhiri in India, which is ultimately identical to the popular lemon. However, the resemblance goes so far that both lemons, the Volkamer lemon and Citrus jambhiri, are also used as rootstocks.
 
Thanks to this general robustness (which, however, does not include frost resistance, see below), this type of lemon is very well suited as a container plant also north of the Alps. The unusual fruit then likes to attract attention. So why not cultivate Jambhiri next to the Meyer lemon: the Beauty and the Beast.
 
Short description of the Jambhiri lemon

Growth: Strongly vigorous, upright branches, many small thorns, new shoots are often reddish to purple-coloured
Flowers: Small, tangerine-like flowers, usually covered with a purplish touch, formed throughout the year, with emphasis in the spring and then again in late summer
Fruits: Medium-sized fruit, grooved and bumpy, especially at the ends, with a pronounced nipple. Thanks to the exotic shape they are an eye-catcher
Special use: As a tart, sour lemon; due to the robust nature (used as a rootstock in various countries because of its robustness) it can also be grown well in the north as a container plant, it is rather more robust and more tolerant to stress than the four season lemon (but admittedly not quite as beautiful)
Frost hardiness/overwintering: In a cold house, at 3-10°C
 
Is Citrus Jambhiri resistant to cold?

Through the literature and through some shops the message haunts that Citrus jambhiri is cold resistant. We have not found any proof of this yet, the geographical origin speaks against it, and there is no evidence in the primary literature (for example, in the standard handbook The Citrus Industry, Vol. 1). I believe, until the contrary has been proved, that there has been some confusion (and, by the way, this first happened to us) regarding a remote name resemblance: Citrus Rusk (but rough) is one of the first winter hardy citrus hybrids, a hybrid of Poncirus trifoliata x sweet orange; for a hybrid from the first generation it has a very pleasant taste and a hardiness down to -10°C and more. It is also called Rusk Citrange, was selected by the father of all citrus science, Walter Swingle in 1897 and named after the first American Agriculture Minister J. M. Rusk, who was Swingle's first employer in the USDA. As I said, I would almost say that Rough and Rusk's name similarity led to the wrong transfer of the properties. But if somewhere out there Citrus jambhiri should have survived outside in -10° Celsius temperatures, please give us this information! In general, however, Citrus jambhiri is a very robust variety that sometimes tolerates a few minus degrees, like many lemons do. It can be easily overwintered at temperatures of 3-10° C in a cold house.
 
  • Available April, May, June, July, August, September, October, November

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