Well the cold days are here , so as I have to let for the first time my lemon trees to pass throw a cold period I noticed that , as it was written somewhere , that meyer lemons don't do well when grafted on trifoliata

Tahiti lime , Pursha , Calamondin , Kaffir lime , all of them on citrus seed rootstock or on their own roots , have dropped a few leaves , but the meyers on poncirus quite few of them

I read that poncirus when cold hits the pots , behave like going into dormancy , so "orders" to the canopy to drop its leaves

Is this true ? Just a mith ? I would like to know how to react to this , more or less water , more or less light ...


Also to not open another topic , how low does it need to drop when speaking of Orange trees? What is the lowest temp?

For citruses ,what is the lowest they can endure ?

Thanks

considering your trees are grafted on poncirus trifoliata they require periods of cold to adapt. since the stock is deciduous, meaning that it's quiescent in winter. just make sure to water the trees with lukewarm water, 20C, during the winter months. keep them on unheated places where temps never drop below 5C, yet make sure to provide the trees as
much as possible natural sunlight.
i guess none of the above mentioned tips is unknown to you, but it's a fact that's been working for me so far. neither one of the trees has experienced a winter leaf drop (last few years) in my case.

take care,
igor

Hi all

Igor , this is not a WLD is just a way of adapting to the new enviroment

Many of the leaves are the lowest ones , and indeed is because is deciduos , but if so , shouldn't be better to sit in my basement in complet darkness , or there will be some problems with the behaviour of the root/canopy , one will survive and the other not , guessing that the roots will win this battle

now they are sitting on a bench in an enclosed porch next to my house , the temps so far are : 11-23C night day , and this even today when we had -1/-3C during night time outside but it is getting warmer for few weeks from now.
No direct sunlight but plenty of light but I didn't wanted the to hit on their leaves causing WLD , so is a light shade , but not completely dark whatsoever



Karoly , then it is true , maybe grafting on Flying is much better , or even on Meyer roots or much better on a citrus lemon seedling.
The problem is that many nurseries provide trifoliata as rootstock , but strongly reccomend that you should keep the tree at a low temp , so is just confusing the buyer to what to do next on winter days

as for oranges I asumed that if everyone recommends that an orange tree should have plenty of heat might be sensitive to cold days , and what is good for a lemon tree might be wrong for a Lime or a Lemon...for example Kumquats are very hardy compare to Blood Oranges....isn't it right ?

many thanks to all for any info