Jump to content

Welcome to Grasscity Forums
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. This message will be removed once you have signed in.
Login to Account Create an Account
Grasscity.com 420 Sale - 25% Discount

How cold can cannabis plant get?


  • Please log in to reply
 

#1
aw69

aw69

    Registered User

  • Registered Upgraded
  • 349 posts
Hey guys I live in new england, and the temps here are 55 degrees farenheit in the day and 38 at nite, I have 5 seedlings that need to be put outside, I have tnt kush, venano, 2 biddy early, and a maroc seeds all feminized I will put the 2l bottle greenhouse over each one but do you think they will live? How cold can they get before dieing?

#2
Optical

Optical

    Registered User

  • Registered Upgraded
  • 579 posts
Temps in the 40s will eventually kill them. So 38 is too cold.

#3
aw69

aw69

    Registered User

  • Registered Upgraded
  • 349 posts
They will be 3 weeks old and you still think its too cold even with a 2L bottle greenhouse?

#4
Optical

Optical

    Registered User

  • Registered Upgraded
  • 579 posts
I don't think the greenhouse will do much to keep them warm at night. I had some plants get down to the low 40's for a few nights and they were not happy at all. They won't survive long term.

Edit- Can you wait until it warms up to the mid 40s?

#5
aw69

aw69

    Registered User

  • Registered Upgraded
  • 349 posts
No for many reasons I can't, but I don't know it 38-45 at nite and 50-70 at day, and it will be in the 45-50s at nite like a week after I plant them outside, is ther any greenhouse or something I can do to keep them warm?

#6
Optical

Optical

    Registered User

  • Registered Upgraded
  • 579 posts
If you've got no choice, just try and see. Some strains will take cold temps better than others. I guess I'd put them out as late as you possibly can and put a little greenhouse over them at night until night temps are 50+. If it's only for a week or so you might be ok!

#7
stoppedat420

stoppedat420

    Registered User

  • Registered Upgraded
  • 374 posts
you try the wallowater it will keep temps in during the day and release them overnight keeping the plant warm

#8
pointswest

pointswest

    Old School on Amber Alert

  • Registered Upgraded
  • 1,802 posts
Use your bottle greenhouse for each plant and put all the plants into another container for the night like a cardboard box covered with a clear top for night protection or for extra protection on really cold days. The plants have to be hardened off gradually for two or three days before subjecting them to the low temps and high light intensity from the sun.

When hardened up properly plants can survive temperatures down to freezing, but proper growth will not occur until temperatures are staying in the mid 50's and above.

Edited by pointswest, 05 April 2011 - 06:23 PM.


#9
aw69

aw69

    Registered User

  • Registered Upgraded
  • 349 posts
What's a wallowater? Is that something I can buy online or something?

#10
Moosehead

Moosehead

    Registered User

  • Registered Upgraded
  • 356 posts
I don't rush to put my plants out in the spring. It is better to wait until the ground warms up. Around here that is last of May to early June. How much cold they will stand is strain dependent but even with plants that will stand some frost in the fall it is better to wait for warm weather. At best planting early results in slow growth. Plants put out when the ground is warmer will quickly catch up to early planted ones.
Good luck and stay safe.

#11
stoppedat420

stoppedat420

    Registered User

  • Registered Upgraded
  • 374 posts
yes you can buy them online look around for the best prices Frost Protection - Cold Frames, Row Covers, Gardening Supplies at Burpee.com heres one site. the water releases the heat it absorbs throughout the day at night when it starts to get cold and it warms the plant with the heat being released.

#12
oceansgreen

oceansgreen

    Registered User

  • Registered Upgraded
  • 2,633 posts
if you have a way to build a cold frame than do that and inside the cold frame fill some dark 2L's with water and stick them in there, they'll gather heat in the day and slowly release it at night, that should HELP quite a bit, if you can't do the cold frame thing, try surrounding the plants with 2L's and see if that help's though it may not help as much
good luck man

#13
aw69

aw69

    Registered User

  • Registered Upgraded
  • 349 posts
Alright haha you guys are going to think I'm stupid but on ebay under wallowater it say "6 each wallowater" does that mean 6 in a pack? And I know its not smart and I should wait but I don't have time.

#14
clodhopper

clodhopper

    Registered User

  • Registered Upgraded
  • 842 posts
Moosehead and others have provided some good advice.

Youre going to loose the plants if you set them outside. Im in kentucky(37) and theres no way in hell i could put a plant outdoors right now and your 800 miles north of me. It will be a month before you should even consider setting them out.

The air temps and soil temps are too cold and will be for weeks. All drug producing species of cannabis are tropical in origin. But even if you could put the plants in a heated greenhouse, the daylenth is not long enough yet and the plants will begin to flower - then they will reveg and then after they are chocked full of auxin hormones.. they wont ever finish appropriately for you to harvest. You are in a disaterous situation caused by premature growing.

The only hope you have is to keep the plants indoors for the next month or so. Starting plants too early is always bad and this is a good example of that. You should just now be starting your plants for the seasons grow at your lattitude.

EDIt: Whatever you do, dont let the Biddy get rootbound. Its very sensitive to that and will hermie in a heartbeat. It is also a very sensitibe strain to lighting variation and wont respond well at all in any significant changes in daylenth. Any biddy early plant that has a 2hr change in daylenth or lighting will straight up hermie. Its an excellent strain, but its touchy.

Edited by clodhopper, 06 April 2011 - 12:26 PM.


#15
stoppedat420

stoppedat420

    Registered User

  • Registered Upgraded
  • 374 posts
if you harden them off correcteclty and use the wallowater correct your pant will surviive in those very low temps

#16
Avidly Dope

Avidly Dope

    Registered User

  • Registered Upgraded
  • PipPipPip
  • 43 posts
depends on the strain. I planted 6 bag seeds. I germinated them and stuck them in soil. it frosted twice and we've been having 40- 50 degree weather with occasional colder days and warmer days. nights are usually above freezing. especially now. All 6 bag seeds came up outside even through 2 frosts. they're a bit more purple than usual but tey're growing just fine. the onyl thing you may have to worry about is the stress affecting the sex of the plant. normally i get like 3/4 females anyway though. i think the bag seeds i grew before have a tendency to be females. I'm not sure why this is but i digress. go for it unless you have special seeds

#17
msad420

msad420

    Registered User

  • Registered Upgraded
  • 823 posts
id say put them in black pots cuz black atrracts light and will keep the soil a lil warmer at night a homeade greenhouse will make a huge diffrence for added warmth wrap grass or hay or SOMETHIng you can find outside around the bucket so its kinda like a slot for the buckets to sit .. all this helped me quite alot when i was having temps around 37 at night but inside my mini greenhouse will all those steps takn it was about 44 -45 i only ..

and hardning them of is quite important to when you first take them outside they NEED to be in a greenhouse cuz there not used to shit yet.. and also keep em in the shade for the first 2 days than move them to somewhere with SOME sun and so forth


1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users