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Posted: Sat Feb 13, 2010 9:46 pm
by Ralf
Yes indeed it's right, Daiv. Double isolated with bubble wrap from inside and outside.
Mainly I do use a propane heater and as backup there is an electrical fan heater.
Temperature inside is between 5 to 8°C (41-46F) at night. On day it's somewhat higher.
The third pic is also a puzzle pic. Where are the hotbeds?
Posted: Mon Feb 15, 2010 9:45 am
by Ralf
I'll do show you the hotbeds. The plants inside needs light, so I've do remove the snow and opens the windows for fresh air on sunny days.
Let's have a look inside there are some several
Escobaria,
Echinocereus and
Opuntia
inside the other one some several
Cylindropuntia and
Opuntia
The lowest temperature inside was -10°C (14F) since December. The plants looks therefor very vital and healthy.
Posted: Mon Feb 15, 2010 7:02 pm
by daiv
Nice. What you call a "hot bed", I have heard called a "cold frame". Your term makes more sense to me.
How about a look inside the greenhouse?
Posted: Tue Feb 16, 2010 12:18 am
by TimN
daiv wrote:Nice. What you call a "hot bed", I have heard called a "cold frame". Your term makes more sense to me.
"Cold frame" aways seemed sort of obtuse to me.
Awesome plants and pictures Ralf! TFS.
Posted: Tue Feb 16, 2010 12:26 am
by iann
A hot bed is different from a cold frame. It is heated (duhh!). Traditionally the heat is provided by a layer of composting material such as manure, in which the plants can then be grown directly. Hence the cold frame is a frame which is not heated.
Posted: Tue Feb 16, 2010 3:03 am
by daiv
After all those years, it finally makes sense!
Now Ian, do you know this because at some point you were wondering about this too?
Posted: Tue Feb 16, 2010 4:06 pm
by Ralf
Aha, now I'm a little step more clever, thanks iann.
Now in the following I'll use the term "cold frame".
It's a lot of work to correcting my site.
daiv wrote:How about a look inside the greenhouse?
Sure, of course. But I'll do this in another topic.
@TimN
What do you mean with "TFS"? I'm not really good in your language.
Posted: Tue Feb 16, 2010 5:20 pm
by daiv
Ralf wrote:
What do you mean with "TFS"? I'm not really good in your language.
Short for "
Thanks
For
Sharing".
Posted: Sat Feb 20, 2010 4:07 am
by Tom2643
Very nice! You've got some plants I wish I could grow outside!
Posted: Sun Feb 21, 2010 5:44 pm
by Ralf
Why don't you do it? It's also in pots and bowls possible.
Re: Some of mine
Posted: Sat Apr 05, 2014 8:45 am
by PixMe
I don't know if this topic is still hot. However, I am a beginner and found a grower in Germany who is specialised on outdoor cacti growing here.
Homepage (in German):
http://winter-kaktus.de
I translated the most important facts:
The following cacti can be grown outdoors in Germany (up to -20° Celsius, some of them up to -30° Celsius; 500-700ml rainfall, no rainfall protection):
- Echinocereus triglochidiatus − coccineus group: (monacanthus, gonacanthus); mojavensis, v. inermis; coccineus, v. paucispinus, v. „minor“.
- Echinocereus caespitosus − baileyi group: „reichenbachii“, caespitosus, perbellus, baileyi, v. albispinus
- Echinocereus engelmannii − fendleri group: some fendleri-forms and engelmannii v. variegatus
- Echinocereus x-roetteri, x-lloydii group: x-roetteri, x-lloydii, x-rosei, x-guerneyi, x-octacanthus
- Escobaria vivipara group: vivipara, neomexicana, arizonica, kaibabensis, radiosa
- Escobaria sneedii − orcuttii group: sneedii, leei, orcuttii, v. königii, v. macraxima, villardii, guadalupensis, sandbergi
- Escobaria missouriensis group: missouriensis, ssp. caespitosa
- Pediocactus simpsonii (note that they might need rain shelter)
- Platyopuntia with big flat branches: engelmannii, phaeacantha, cymochila, compressa, humifusa, erinacea, macrorhiza
- Opuntia fragilis group: most of them
- Cylindropuntia imbricata
- Maihuenia: poeppigii, valentinii, patagonica (note that not all clones are hardy)
I took this information from here:
http://winter-kaktus.de/index.php?optio ... Itemid=108
There you can also find some cacti which are less hardy (up to -15° Celsius) at the end of the page.
Note that I did not include the hybrids.
Please excuse me if I didn't write the names properly since I am a beginner and just tried to translate the info from the URL above
But maybe someone might find this useful.
I started with a Cylindropuntia imbricata, an Echinocereus cocchineus and some succulents. Let's see if it works...
Re: Some of mine
Posted: Mon Apr 07, 2014 9:37 pm
by hoteidoc
PixMe - Read up ALL posts & pics of Ralf's -- he's as good as they come with cold-hardy's in Germany!