ALSO.... for fall collections over winter.I’ve only seen heat pads recommended to help seeds and cuttings. I would worry they’d dry out the soil and create frequent rapid fluctuations in soil temperature.
This confuses me.All in all : We sometimes get -25 Celsius / -13 FH for weeks on end here.
ALSO.... for fall collections over winter.
But OP....
This confuses me.
BUUUT I looked into your climate...
I think that if you make a lil' lean-to... You'd be fine...
How many trees, 100?... 200?
Haha. Like 20 or so ..
Ok, are you ready …If WAY less than this, making a little shed... Or just placing them on the ground.... Species depending....
EDITEDITEDIT!!!! I think I know what's going on here.... You THINK you are USDA 7a.... But you are a bit warmer than me in winter...AND cooler than me in summer.
Check this... It's MY climate (USDA 5a/AHS-3)... Compared with YOURS... AND Chicago....
Your climate falls BETWEEN them.
You should ACTUALLY consider yourself USDA 6 (Possibly even 5b).
...like finding your REAL bra-size, eh?
I'm here for support!
Ok... What species have you got?.. we'll get you "squared away" See below
Haha! Ok... Did you NOT look at the link I sent you...Interesting. I just googled my position and got 7a straight away
Groovy mix! Even in your (I'm gonna say USDA 6a) climate.. most of those "outdoor-all-year" trees will be fine if you set them on the ground and bunch them together.Ok, are you ready …
BP - Big Pot. SP - Small Pot. MP - Mini pot
Outside in the noob tent :
•2 Yamadori Scots Pines ( In crates w pure pumice ) BP
•1 Mugo Pine ( in big growout pot w 33/33/33% conifer mix ) BP
•1+1 Procumbens and Chinensis Junipers
( in pretty big growout pots w 33/33/33% conifer mix ) BP
In the shed :
•Birch / Betula Pubescens BP
•Ash / Fraxinus Excelsior BP
•Oak / Quercus Robur BP
•Japanese White Pine / Pinus Pentaphylla S/MP
(I keep this in the shed this first year because it’s a small pot. I’m a coward I know … )
•Alberta Spruce / Picea Glauca (same cowardry here as with the Mames and some of the Shohin) S/MP
•Gold Larch / Pseudolarix Amabilis SP
•Crabapple / Malus Floribunda BP
•Cotoneaster / Cotoneaster Dammeri SP
•Mini Rose / Rosa Helenae BP
•Norwegian Maple / Acer Platanoides BP
•Artropurpureum Maple / Acer Palmatum B/SP
•Blood Beech / Fagus Sylvatica SP
•Japanese Cherry / Prunus Incisa SP
•Japanese Azalea/Rhododendron Japonicum MP
•Mames of Scots Pine, Maple, Ivy and Ash MP
Tropicals / Subtropicals indoors w grow lights :
•Desert Rose / Adenium Obesum
•Tiger Bark Fig / Ficus Retusa
•Chinese Privet / Ligustrum Sinense
•Bird Plum / Sageretia Theezans
•Chinese Elm / Ulmus Parvifolia
•African Boxwood / Myrsine Africana
To say the least - A wide variety from around the globe
..;;::THE END::;;..
I have to admit i didnt really .. Thanks anyway.Haha! Ok... Did you NOT look at the link I sent you...
That’s great. Since i have 3 options for off season storage with or without heaters, i feel pretty safe. Coldframe, Shed & Indoors.IF you ARE in 7a..(but you are NOT). All your trees will be fine without protection..
This map says inbetween 7 and 8So If you are confident that you are 7a... Even though you have a Chicago climate... Well ... You MAY run into some issues.
I know. Im grateful for your time sir !I am not trying to be rude..
But I am, effectively, somewhere between 4-5 USDA... And I'm warmer than you in summer... Your winters are in between Chicago (Zone 6) and My own (Zone 4-5)...
USDA is pretty difficult to equate to other continents...
But Zone 7, here... Is Like Charlotte, North Carolina...
Here is Stockholm, and Charlotte... Compared.
Remember that Charlotte... Is FOR SURE zone USDA 7..
Quite different.
Here is a screenshot of ONE of the analysis the site provides. (If others don't want to click in)
Thanks friendGroovy mix! Even in your (I'm gonna say USDA 6a) climate.. most of those "outdoor-all-year" trees will be fine if you set them on the ground and bunch them together.
Use an unheated shed/garage if you want extra protection...
Haha! I was typing something similar at the same time!Well the answer seems clearly to be that European hardiness zones are different. In US, zone 7 means the average annual minimum temp is between 0°-10°F (-7°- -12°C), zone 6 is -10°-0°F (-12°- -23°C) and zone 5 is -10°- -20°F (-23°- -29°C). Again this is the AVERAGE ANNUAL MINIMUM, a one sided (but very helpful) measurement of climate. I would think Sweden must be colder than zone 7.
Great. Again i applaude you for your time and effort to help meWell if you HAD looked at the link.
You'd notice me comparing your climate to actual USDA zones ... IN the US.
It is always SUPER difficult to effectively "translate" USDA onto different continental climates.
Because USDA criteria is termed/defined by average annual minimum temperature... Divided Into 10dF "sections".. (Zone 7a is -17.5 through -15dC)
And while sometimes these criteria are barely met, while the REST of the climate tells a different story.
If your average minimums fall under that category, I guess you ARE Zone 7....
A pine with routine and mileage from just 3 years. Mother natures evolution is nothing but stunning !!!Here. Is the master winterization . At work tree is native red pine 3 years old left on a 2 foot high bench . During winters first large snowstorm . Side of snow mound knocked away . Notice how the leader is bent over to the ground . Needles are folded against the stem . The sensitive young stem and trunk . Are protected from touching the snow and possible ice build up . So rounded by a air space . Tree is bent over and branches are all the same . Forming a similar air space around the trunk base .