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 Overwintering my mammilarias

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Liz

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Number of posts : 13
Location : Standish. Wigan. Lancashire.
Registration date : 2011-05-22

PostSubject: Overwintering my mammilarias   Sun Sep 11, 2011 4:26 pm

Hi there
I am looking for some advice about how to safely overwinter my mammillaria collection. I am reducing their watering so that by October they should be quite dry but I am just wondering whether it would be best to move them indoors or leave them in my greenhouse until next spring. Any advice will be gratefully received as I do not want to lose any of my plants. Ihave included my mammillaria list below:

Mammillaria backebergiana ernestii albispina
Mammillaria baumii
Mammillaria bocasana 'Caterpincy'
Mammillaria bocasana roseiflora
Mammillaria bombycina
Mammillaria boolii
Mammillaria bucareliensis ML 485
Mammillaria camptotricha
Mammillaria camptotricha 'Madame Le Marnier'
Mammillaria carmenae. Orange spines.
Mammillaria carmenae. White spines.
Mammillaria carrettii
Mammillaria decipiens
Mammillaria dixathocentron
Mammillaria duwei
Mammillaria egregia
Mammillaria eichlamii
Mammillaria elongata
Mammillaria ernestii 'albispina'
Mammillaria glassii ascensionis nominis-dulcis
Mammillaria gracilis
Mammillaria gracilis Arizona Snowcap
Mammillaria guelzowiana
Mammillaria haageana
Mammillaria hahniana v. albiflora
Mammillaria hahniana spp. Woodsii
Mammillaria haudeana
Mammillaria herrerae
Mammillaria humboldtii
Mammillaria karwinskiana ssp. Nejapensis
Mammillaria lauii
Mammillaria lenta
Mammillaria longimamma var. Uberiformis
Mammillaria magnimamma
Mammillaria marksiana Green
Mammillaria marksiana Yellow
Mammillaria matudae
Mammillaria neopalmeri
Mammillaria nivosa and one baby
Mammillaria painteri f. monstrose
Mammillaria parkinsonii
Mammillaria pectinifera
Mammillaria perbella
Mammillaria plumosa
Mammillaria polythele var nudum
Mammillaria perezdelarosea
Mammillaria rekoi leptacantha
Mammillaria saboae ssp roczekii
Mammillaria schiedeana ssp. Giselae
Mammillaria sempervivi
Mammillaria senilis
Mammillaria solisioides
Mammillaria spinosissima
Mammillaria surculosa
Mammillaria theresae
Mammillaria vetula
Mammillaria zeilmanniana

Liz flower

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Anthony 1



Number of posts : 49
Age : 77
Location : Manchester,UK
Registration date : 2011-03-13

PostSubject: Re: Overwintering my mammilarias   Mon Sep 12, 2011 4:07 pm

Hi Liz

Given that we both live in the COLD North West I would be inclined to move your plants into your living room where they will be lovely and warm.


Good growing


Anthony Morris
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wiebe
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Age : 58
Location : The Netherlands
Registration date : 2008-09-18

PostSubject: Re: Overwintering my mammilarias   Tue Sep 13, 2011 1:17 am

Quote :
to move them indoors or leave them in my greenhouse until next spring
Of course depends on the temprature in your greenhosdue. Is it heated?

Quote :
to move your plants into your living room
A heated living room is in my opinion a very bad place to keep your plants during winter.

Wiebe
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Liz

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Number of posts : 13
Location : Standish. Wigan. Lancashire.
Registration date : 2011-05-22

PostSubject: Overwintering   Tue Sep 13, 2011 7:20 am

wiebe wrote:
Quote :
to move them indoors or leave them in my greenhouse until next spring
Of course depends on the temprature in your greenhosdue. Is it heated?

Quote :
to move your plants into your living room
A heated living room is in my opinion a very bad place to keep your plants during winter.

Wiebe

Hi Wiebe

Thank you so much for sending me a message. I was a bit confused as I have read that they need to be kept cool over the winter and I did wonder about an unheated bedroom in my house. My greenhouse does have a heater and I really would like to ask what is the temperarure needed? Would it be enough to just use the frost guard button on the heater or does it need to be a little warmer than that?

Liz flower
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Tam

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Location : Rothesay, Isle of Bute, Scotland
Registration date : 2008-11-12

PostSubject: Re: Overwintering my mammilarias   Tue Sep 13, 2011 11:34 am

If you keep the plants dry over the winter and have the heating on so that it is above freezing you should be alright with your plants. It would help futher to bubble wrap the glasshouse if you can.
I might be inclined to bring the M.nivosa inside given that it comes from the West Indies.
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Chris43
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Location : Chinnor, UK
Registration date : 2008-07-16

PostSubject: Re: Overwintering my mammilarias   Tue Sep 13, 2011 1:55 pm

Hi Liz,
I keep my Mamms in the greenhouse. I have bubble wrap to reduce heating bills, and keep the thermostat at about 7C. Of course last winter it was much colder than usual, even here in the South East, and the min-max said that it had gone lower so the heaters must have ben working flat out at times.
M. senilis will take lower, and if it is in a light plcae as well, this will help it to flower well.
M. nivosa, as Tam says, needs more. I keep my southern Mamms (nivosa, mammillaris, columbiana...) in a small plastic greenhouse inside the main one, and that is at about 12C.
I know people who have brought all their plants inside, and that works, but they don;t always get as much light as they would in a greenhouse, and I think that in winter the more light they can have the better, as this I think helps mature them and encourage flowering in the Spring.

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Liz

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Number of posts : 13
Location : Standish. Wigan. Lancashire.
Registration date : 2011-05-22

PostSubject: Re: Overwintering my mammilarias   Tue Sep 13, 2011 3:44 pm

Thanks Tam and Chris.
I am in the process of bubble wrapping the greenhouse now - just waiting for the last of the tomatoes to finish so I can get to the third side. I have taken on board all your advice and thank you very much all who have replied to me so far.
Cheers
Liz Very Happy
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woltertenhoeve



Number of posts : 229
Registration date : 2009-10-01

PostSubject: Re: Overwintering my mammilarias   Tue Sep 13, 2011 9:21 pm

Hi Liz,

If you keep your greenhouse at 7 degrees C, as Chris does, then almost all of your plants should be safe. I used to keep my greenhouse colder, just above freezing (the more southern Mexican Mamms were put inside my house during the winter). But I have grown almost all of my plants from seed, and then they have become adapted to these low temperatures. If many of your plants were bought from nurseries, then they are not adapted to very low temperatures and then I would suggest a minimum of 5 degrees in the winter. But if you want to save on your heating bill, then moving all the plants into an unheated bedroom, would be a good idea. The money that you save can be spent on buying new cacti Smile
I think that 5 degrees is too low for M. nivosa, I would overwinter that one at a minimum of 10 degrees (i.e. in your house). The same perhaps for M. eichlamii and a few more Mamms from southern Mexico.
A few degrees of frost is no problem for M. senilis.
Last year I carried all my cacti into my house when a severe frost came at the end of November and my heater did not work properly. There were about 140 boxes of 40 x 40 cm filled wirth cacti (yes, I have a large house)! Towards the end of February everything went back into the greenhouses. I was very satisfied with this method, and I plan to do the same this winter when stronger frosts are coming.

Wolter ten Hoeve, The Netherlands.
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Anthony 1



Number of posts : 49
Age : 77
Location : Manchester,UK
Registration date : 2011-03-13

PostSubject: Re: Overwintering my mammilarias   Wed Sep 14, 2011 9:23 am

Don't forget that we in the NW have a higher level of atmospheric dampness which is what did for a lot of my cacti when I left them outside in an unheated greenhouse a couple of years ago.
This was on the advice of someone with a degree in horticulture. My plants were also very dry having had no water for some time

The dampness is also what helped the NW and in particular Manchester to become the cotton capital.

HTH

Anthony Morris
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Liz

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Number of posts : 13
Location : Standish. Wigan. Lancashire.
Registration date : 2011-05-22

PostSubject: Overwintering   Wed Sep 14, 2011 10:03 am

ajm389 wrote:
Don't forget that we in the NW have a higher level of atmospheric dampness which is what did for a lot of my cacti when I left them outside in an unheated greenhouse a couple of years ago.
This was on the advice of someone with a degree in horticulture. My plants were also very dry having had no water for some time

The dampness is also w

hat helped the NW and in particular Manchester to become the cotton capital.

HTH

Anthony Morris

Hi Anthony

Now you can see why an amateur like myself gets bemused by contradicting advice Very Happy I am still struggling with various synonyms for some of the mammillarias I have as it makes researching on the web complex but I'm sure that with all the pooled advice from the helpful folk on here, I will find a satisfactory solution.

Its nice to be able to contact the more experienced growers on here for all their tips.

Cheers
Liz flower
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