Winterflowering Kniphofias

Tony Avent
Thu, 28 Feb 2008 04:26:38 PST

I continue to be fascinated by how climate affects flowering time.  
Kniphofia rooperi flowers here from August-October.

Tony Avent
Plant Delights Nursery @
Juniper Level Botanic Garden
9241 Sauls Road
Raleigh, North Carolina  27603  USA
Minimum Winter Temps 0-5 F
Maximum Summer Temps 95-105F
USDA Hardiness Zone 7b
phone 919 772-4794
fax  919 772-4752
"I consider every plant hardy until I have killed it least three times" - Avent

Lauw de Jager wrote:
> Ken,
>  Concerneing K rooperii, the only trouble with freezing temperatures is that
> the  buds are destroyed. They flower consistently from  late Decembre till
> early March.  However, watering has an impact on the flowering time: those
> with regular drip irrigation flower much better then those submitted to
> summer and this year an autumn drought  (till early December).
> Dave Fenwick had a few K rooperi from me some years ago, he might be able to
> add some interesting details (Dave are you still on the list?)
> Thanks  everyone who confirmed that K sarmentosa is  winterflowering and
> come from  SW Cape; thus should be an ideal plant for our mediterranean
> climat.
> I will try to put  some K rooperii images on the wiki
> Greetings
> -- Lauw de Jager
> Bulb'Argence
> South of France (zone 9 (olive trees)
> emailto:
> Site
> Le 27/02/08 14:20, « Kenneth Hixson » <> a écrit :
>> I'd be interested in hearing if they continue to flower in
>> winter after a couple more years.  The plants did weather our winter
> cheerfully, lustily.  Bright, attractive green leaves now.  The low this winter
> was only +14F, so perhaps that  doesn't say much.
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