When can they go in Greenhouse?

homemommyMarch 10, 2009

I have an unheated greenhouse (the type with clear plastic, it has two sets of four tier shelves, more like a tent, not a permanent structure!!

Anyway, I have a ton of Cannas in storage, and absolutely no where to put them into the light when they come out, as all my shop lights are busy with seedlings.

We are averaging just above freezing temperatures now, but they are not falling much below that at night. Of course, a Canna cannot freeze! I would bring them in at night, but the greenhouse is a little warmer no matter what, and heats up with the least bit of sun.

So... what temps do I need to get them out?

Thank you for reporting this comment. Undo
green_thumb_guy(Z5 Ont)

Hi homemommy,

You are in Brampton are you not? I think I saw it in other posts. I'm in Brampton also so I know the weather here.

Now your greenhouse, if I'm picturing it correctly, doesn't seem like it would hold much heat in over night. That's typical for plastic sheeting I would suggest that your cannas need to be at 10C minimum temperature to grow. At this temp, growth will be slow.

I usually don't try to get my cannas outside until the middle of April depending on the type of spring we are having and I have an unheated glass greenhouse. I end up throwing portable heaters in on the cold nights.

Generally though, it isn't until the beginning of May that I'm comfortable in putting them out with minimal protection.

The surprise "frostings" cause me a great amount of stress. I wouldn't be in too much of a hurry as you may stress your tubers too much.

    Bookmark   March 12, 2009 at 10:46PM
Thank you for reporting this comment. Undo

Thanks Green Thumb.

Yes, they are a plastic type of unheated greenhouse. I was thinking though that I would bring them in at night into our family room. The temps are cool if the gas fireplace is not on, but decidedly warmer then 10 degrees ;-)

Basically, in the greenhouse during the day to take advantage of the sun, then wipped inside to go to bed when the sun goes down and the greenhouse cools... Knowing they can tolerate 10 degrees C is good though, gives me a rough idea that anything warmer, and we should be golden... ;-) I would love to start them in my basement underlights, but DH said no!

    Bookmark   March 14, 2009 at 3:44AM
Sign Up to comment
More Discussions
I was given some cannas bulbs recently, which mean...
Not to brag, but...
I scarified 12 canna seeds (very common old-fashioned...
canna fermentation to make ethanol
I have read that some farms are using canna rhizomes. Does...
WANTED: cann's
looking for all colors of Cana. I have other flowers...
Susan Levy
Sponsored Products
Area Rug: Triexta Satin Homespun 6' x 9'
Home Depot
Palram Silver Snap and Grow Greenhouse (8 x 12)
Contemporary Indoor/Outdoor Area Rug: Mohawk Home Rugs Triexta Satin Floating
Home Depot
Area Rug: Triexta Satan Billowing Cloud 4' x 6'
Home Depot
Palram Harmony 6x4 Greenhouse
Royal Plantation Outdoor Ottoman
$1,335.00 | Horchow
Area Rug: Triexta Satin Billowing Cloud 9' x 12'
Home Depot
Quatrefoil SmartStrand Carved Rug (9' x 12')
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™