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Messages - Moro

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Cold Hardy Citrus / Re: Sudachi cold hardiness
« on: January 03, 2019, 04:40:15 AM »
Yes, I grew Sudachi and Changsha in Ticino near Lago Maggiore on 600m above sea level. We had regular freezes down to -10C, -12C in 2006 and 2012. Both plants survived without any damages.
I now moved on the northern side of the Alps near Lake of Constance and started with Ichangquat 11C in ground. It is doing fine without any protection and grows nicely. First fruit appeared last year.

The big difference between both locations is the type of frost. Ticino has clear and sunny skies almost all winter and frost mostly is radiation frost. Temperatures rarely stay below freezing during the day (only a handful of days per year). In the North, cold winds from the East bring advective frost. Absolute minimum temperatures don't differ much from Ticino but when the "beast from the East" comes, temperatures stay well below freezing for several days in a row. You have to choose a spot which is well sheltered against wind from East and North. Living a few hundred metres from a large lake also helps buffering cold temperatures.
I am currently testing an Ichangensis x sinensis cross from Eisenhut (Z194: on the western wall of the house.

Cold Hardy Citrus / Re: Ichangquat other than 6-7-2
« on: July 21, 2018, 09:54:47 AM »
I bought the tree as a baby in 2013 and kept it in pots until 2016. So it is now in ground since 2 years. That’s when I trimmed it to a tree shape, before it was rather a bush. It is now appr. 1.4m (4’ 7’’) high.

It is on the south side of the house but receives shadow from the house on the opposite side of the street from November to February. I covered the ground around the tree with some small basalt rocks to store heat. It is protected against winds from the north but fully exposed to eastern winter winds.

I covered the tree with a single layer of frost cloth during winter. Last winter, we had two consecutive nights with -11C (12F) during a week with 6 days constantly below freezing. The most tender branch tips died, but otherwise the tree was fine.

Cold Hardy Citrus / Re: Ichangquat other than 6-7-2
« on: July 20, 2018, 05:58:46 AM »
This is my 245 from Eisenhut in ground at Lake Constance. No flowers yet.

Cold Hardy Citrus / Re: Eremolemon
« on: April 06, 2018, 11:16:01 AM »
My Eremolemon is from Eisenhut (catalogue id 94). I typically take it in the greenhouse when temperatures fall below -8C (17F) because I don't want to risk damaging the beautiful tree. It never had any significant damages at those temperatures. The fruit is very sour, makes nice marmalade, and ripens early.

Eisenhut has one planted in ground.

Cold Hardy Citrus / Re: keraji mandarin
« on: March 20, 2018, 09:01:20 AM »

Cold Hardy Citrus / Re: keraji mandarin
« on: March 20, 2018, 04:59:39 AM »
I have the 245. It had the first two flowers late last autumn, i.e. no fruits because of the start of winter. Don't know whether it will be able to flower this spring after the arctic conditions in February and March.

Cold Hardy Citrus / Re: keraji mandarin
« on: March 16, 2018, 07:02:33 AM »
I have a Keraji planted outside at a spot close to the greenhouse wall and protected against the Eastern winds that bring the cold snaps of air from Russia.

We had a mild winter in December and January followed by a brutally cold week in late February with two nights at -11C (12F) and highs during the day at -6C (21F). The tree survived without damages except a few lost leaves. I wrapped it in frost cloth during the coldest nights.

My Ichangquat has no protection against the wind from the East and lost more leaves than the Keraji but still no big damages.

Both were planted in 2016 and are about 1.2m (4 ft) tall.

Cold Hardy Citrus / Re: Anyone know any sources of N1tri citrus?
« on: February 06, 2018, 01:52:25 AM »
It is roughly 2 m tall

Looks nice. For the Europeans: Eisenhut at Lago Maggiore seems to have it as citrus catalogue number 206.

Cold Hardy Citrus / Re: Anyone know any sources of N1tri citrus?
« on: February 04, 2018, 04:49:38 AM »
Do you have photos of the tree?

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