Canna p-stem protection

Post Reply
otorongo
Posts: 1434
Joined: Tue Jan 10, 2012 5:12 pm
Location: sub-subtropical London

Canna p-stem protection

Post by otorongo » Tue Oct 01, 2013 10:43 am

Can they be protected like nanas?

I just don't like the idea of losing the tops and starting from scratch, especially since I'm not digging them up.

Since mine are small, perhaps I could just mulch the first few inches of the p-stem at the bottom, so at least when the frosty season ends I have some stem length to start with?

flounder

Re: Canna p-stem protection

Post by flounder » Tue Oct 01, 2013 12:23 pm

My experience being, if ANY damage occurs to the stem, it just shuts it down and sends up new ones. The only way is probably to hope for no temps below 5c this winter which I'm afraid you've more chance of finding rocking horse poo

otorongo
Posts: 1434
Joined: Tue Jan 10, 2012 5:12 pm
Location: sub-subtropical London

Re: Canna p-stem protection

Post by otorongo » Tue Oct 01, 2013 2:11 pm

Cheers. 5C? I thought they would easily take anything down to 0. Oh well.

The main stems are accompanied by smaller/younger ones, so maybe I'll just cut the main ones to ground level, remove the leaves on the small ones and cover them with cloches stuffed with something insulating, just for an experiment. If the small stems survive, great; if they don't, the cloches should help the corms (or whatever you call them) in the ground sail through the winter.

fern Rob

Re: Canna p-stem protection

Post by fern Rob » Tue Oct 01, 2013 6:13 pm

I think you just don't want them to freeze .

leunerj

Re: Canna p-stem protection

Post by leunerj » Tue Oct 01, 2013 9:12 pm

This is a really interesting question Otorongo. I'd never thought of protecting Cannas before but now that you mention it, it makes perfect sense. The only Canna I grow is C. tuerckheimii (for the foliage not the flowers) and last winter I tried to keep them in leaf by digging them up and keeping them in a frost-free greenhouse over winter. It didn't work very well and they looked rather ill for most of the Spring and are only starting to look good now. This winter I might dig one up but leave another in the ground and protect with a wire cage and straw/leaves etc.

GREVILLE

Re: Canna p-stem protection

Post by GREVILLE » Tue Oct 01, 2013 11:00 pm

I've often dug up full stems of cannas to escape a frost but never have been able to keep them going even in the greenhouse in winter. Only some young shoots at the end of the season remain evergreen.

User avatar
Dave Brown
Site Admin
Posts: 19742
Joined: Sun Jul 09, 2006 10:17 am
Location: Chalk, (Thames Estuary) Kent, England 51.5N 0.3E
Contact:

Re: Canna p-stem protection

Post by Dave Brown » Wed Oct 02, 2013 2:43 pm

lack of light will cause them to stop growing and deteriate. Best just to mulch well and cloche if you want an earlier start in spring, or or dig up and store almost dry and frost free over winter, then start off in Feb/March under glass. :wink:
Best regards
Dave
icon_thumright
_________________________________________________
Roll on summer.....
http://www.hardytropicals.co.uk

Post Reply