Kniphofia hardiness
Mon, 03 Mar 2014 14:23:28 PST

During normal winters and mild winters K. northiae tends to keep most or all of its foliage, and is more likely to bloom the following spring.  This winter has been exceptionally cold, with some of those low single digit nights without snow protection.  My plants in the school garden in Chappaqua NY are beginning to become visible as the snow melts, and they are definitely browned pretty badly.  I anticipate they will grow back, either from the bases and heart of the rosette or from side rosettes if the main one is too badly damaged.  Time alone will tell.  K hirsuta is normally hardy, as is K baurii and K triangularis.  I have more outside at home and school but wait to see how they fare in spring before I can add anything. I will say K thompsonii is only hardy in mild winters in my limited experience.  
Ernie DeMarie
Briarcliff Manor NY Z7ish

-----Original Message-----
From: Peter Taggart <>
To: Pacific Bulb Society <>
Sent: Mon, Mar 3, 2014 2:55 pm
Subject: Re: [pbs] Kniphofia hardiness

K northiae survived minus 15C or colder for me and flowered, In my
experience K hirsuta sulks if it does not get a  hot dry spot. It was also
hardy in the recent cold winters. K caulescens died. K uvaria hardy for me
too. I have a plant labelled K thomsoni which was also unscathed. Various
hybrids, sown as species, such as citrina and baurii were hardy, pauciflora
is definately not hardy in cold winters. K typhoides was hardy for many
years but I am not sure if I still have it.
 All in Derbyshire, England


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