Hi Jane;

Hopefully this will help.

Based on the extensive body of DNA research, and confirmed in our
field trials, there are only 7 lycoris species, with 1 still tbd...a
far cry from the 13-20 often cited.

Two of the lycoris species have foliage that emerges in fall, and
five have foliage that emerges in late winter/early spring. Because
all lycoris are winter-growing, the foliage emergence times
determines their ability to withstand winter cold. Areas with
extremely cold temperatures in early fall that remains so all winter
may actually delay foliage emergence, making the plant more winter
hardy than in conditions with fluctuating winter temperatures.

Those species with fall-emerging leaves are generally winter-hardy
to Zone 7....some clones slightly more, some slightly less.
Fall foliage (zone 7)
Lycoris aurea
Lycoris radiata

Those species with spring-emerging leaves are generally winter-hardy
to Zone 5, possibly colder
Spring Foliage (Zone 5)
Lycoris chinensis
Lycoris longituba
Lycoris sanguinea
Lycoris shaanxiensis (virtually everything in commerce is x
straminea) with fall foliage
Lycoris sprengeri

Tbd
Lycoris guangxiensis

All other lycoris are hybrids. Hybrids of two spring-leaf species
retains the Zone 5 hardiness, but crosses of a spring-leaf and a
fall-leaf species, always produces offspring with fall foliage, so
the hardiness of these always reverts to Zone 7. In theory, crosses
with two spring species and one fall species could delay leaf
emergence enough to increase winter hardiness.

Lycoris Hybrids
Many of these names are long established, most originally published
as species, which DNA has shown to be hybrids. Other names are
unpublished and only used by us as working names for the hybrids we grow.

Fall x Fall (Zone 7)
Two species hybrids
x albiflora (syn: L. elsiae) - aurea (fall) x radiata (fall)

Spring x Spring (Zone 5)
Two species hybrids
x caldwellii - chinensis (spring) x longituba (spring)
x chejuensis - chinensis (spring) x sanguinea (spring)
x flavescens - chinensis (spring) x sanguinea (spring)
x incarnata (same as x squamigera)
x sprenguinea (unpublished) - sprengeri (spring) x sanguinea (spring)
x sprengensis (unpublished) - sprengeri (spring) x chinensis (spring)
x squamigera (same as elegans, incarnata) - - longituba (spring) x
sprengeri (spring)

Fall x Spring (Zone 7)
Two species hybrids
x chinaurea (unpublished)- aurea (fall) x chinensis (spring)
x cinnabarina - aurea (fall) x sanguinea (spring)
x rosea (same as jacksoniana) - radiata (fall) x sprengeri (spring)
x sprengurea - aurea (fall x sprengeri (spring)
x straminea (syn: houdyshelii) - radiata (fall) x chinensis (spring)
x rubroaurantiaca - undetermined by DNA

Three species hybrids (2 spring x 1 fall)
x longitosea (unpublished) - longituba (spring) x sprengeri (spring)
x radiata (fall)
x roseguinea (unpublished) - radiata (fall) x sprengeri (spring) x
sanguinea (spring)
x rosensis (unpublished) - radiata (fall) x sprengeri (spring) x
chinensis (spring)

Three species hybrids (2 fall x 1 spring)
x radichinaurea (unpublished) - radiata (fall) x aurea (fall) x
chinensis (spring)
x rosaurea (unpublished) - radiata (fall) x aurea (fall) x sprengeri (spring)

Tony Avent
Proprietor
tony@jlbg.org<mailto:tony@jlbg.org>
Juniper Level Botanic
Garden<http://www.juniperlevelbotanicgarden.org/> and Plant Delights
Nursery<http://www.plantdelights.com/>
Ph 919.772.4794/fx 919.772.4752
9241 Sauls Road, Raleigh, North Carolina 27603 USA
USDA Zone 7b/Winter 0-5 F/Summer 95-105F
"Preserving, Studying, Propagating, and Sharing the World's Flora"

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and native perennial plants.

This message and its contents are confidential. If you received this
message in error, do not use or rely upon it. Instead, please inform
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From: pbs <pbs-bounces@lists.pacificbulbsociety.net> On Behalf Of Jane McGary
Sent: Wednesday, September 12, 2018 12:31 PM
To: Pacific Bulb Society <pbs@lists.pacificbulbsociety.net>
Subject: [pbs] Fwd: PBS website contact:///Lycoris/

The following question came via the website. Could some of you who grow
Lycoris species (particularly Jim Waddick, whose archived comments led
to the question) comment on hardiness of various Lycoris species? Not
something I could answer -- this genus does badly in the far west.

Jane McGary

-------- Forwarded Message --------
Subject: PBS website contact:///Lycoris/
Date: Tue, 11 Sep 2018 22:55:11 +0100 (BST)
From: Apache <apache@http://www.ibiblio.org/><mailto:apache@www.ibiblio.org%3e>
Reply-To: Charles Heuser <cwh2@psu.edu><mailto:cwh2@psu.edu%3e>
To: janemcgary@earthlink.net<mailto:janemcgary@earthlink.net>

This is a message from the PBS website for janemcgary.

I was reading about Lycoris and the article by James W. Waddick on
Lycoris and had a question on the hardiness zones for the various
species. His hardiness zones of many of the species listed in his
article are lower than those listed for the species by other
authors. Can you explain the difference? I would like to grow more
of the species here in central PA which is in zone 6.
Thanks for the help.
Charles Heuser, PhD

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