New Varieties Digital Guide 2025 - 26

CULTURE REPORT
Product
Information
Cultivating
the beauty of
'SViolailver Gem'
After 20 years, this
wild variant is now
an excellent pick for
your perennial program
BOTANICAL NAME
Viola walteri 'Silver Gem'
FAMILY
Violaceae
USDA Hardiness Zones
6-8
SUN EXPOSURE
Full shade to part sun
NATIVE RANGE
Eastern U.S. from Pennsylvania to Texas
MATURE PLANT SIZE
3-5 inches tall, 10-15 inches wide
Finish
Culture
RECOMMENDED FINISH SIZE
Quart; 1- and 2-gallon
WATER REQUIREMENTS
Well-drained, with even moisture ranging
between a level 4 and 2 to avoid disease
GROWING MEDIUM
Well-draining soil mix
BY ARDEN PONTASCH
A
t North Creek Nurseries,
a wholesale propagation
nursery in southeastern
Pennsylvania with a strong emphasis
on North American native plants,
we pride ourselves on growing
plants that stand the test of time.
That test begins in our trial gardens
and expands to every inch of the
company, as we constantly assess
the resiliency of each plant within our
internal greenhouse and production
processes, too.
The means by which a plant is
introduced to the nursery trade,
while often nuanced, is also often a
testament to the character of those
plantsmen who know when a plant
that is worthy of said nuance has
graced their gardens.
FEBRUARY 2024 GPNMAG.COM
While the path to introduction has
been somewhat circuitous for Viola
walteri 'Silver Gem', the charisma
of the striking - almost glowing -
silvery foliage and the dainty lavender
flowers, which float effortlessly above
the stretching tendrils, make this
plant a horticultural specialty to add
to your perennial product lineup for
2024 and beyond.
'Silver Gem' was first discovered
along a tributary of the Little Cahaba
River in Bibb County, Alabama, in 2003
by Rick Lewandowski, then director
of Mt. Cuba Center in Hockessin,
Delaware, and Fred Spicer from the
Chicago Botanic Garden. This wild
seedling variant was spotted in the
rich woodlands, near an exposed
cedar glade on a dolomitic limestone
26 NEW VARIETIES 2025 DIGITAL GUIDE GPNMAG.COM
RECOMMENDED pH
5.5-6.2
FERTILIZER
Feed established plants at
75-150 ppm Nitrogen
PESTS/DISEASES
Botrytis, Thielaviopsis and
Powdery Mildew due to persistent wet
PROPAGATION METHOD
Tissue culture
PLUG TRAY SIZES OFFERED
LP32 and 72
Production
Seasons for 2024
WINTER: week 1 and 3
SPRING: week 20 and 22
AUTUMN: week 38 and 51;
week 3 of 2025

http://www.GPNMAG.COM

New Varieties Digital Guide 2025

Table of Contents for the Digital Edition of New Varieties Digital Guide 2025

Table of Contents
From the Editor
CAST 2024: CAST crazes of 2024
CAST 2024: Remarkable releases for 2025
Variety Information: Award Winners
Variety Information: A bevy of blooms
Culture Report: Grama grass
Culture Report: Cultivating the beauty of viola 'silver gem'
Houseplants: 2024: Year of the African Violet
Trial Garden Report: Brilliant blooms in North Carolina
Trial Garden Report: Penn State flower trials
New Varieties Digital Guide 2025 - 1
New Varieties Digital Guide 2025 - 2
New Varieties Digital Guide 2025 - 3
New Varieties Digital Guide 2025 - Table of Contents
New Varieties Digital Guide 2025 - From the Editor
New Varieties Digital Guide 2025 - CAST 2024: CAST crazes of 2024
New Varieties Digital Guide 2025 - 7
New Varieties Digital Guide 2025 - 8
New Varieties Digital Guide 2025 - 9
New Varieties Digital Guide 2025 - 10
New Varieties Digital Guide 2025 - 11
New Varieties Digital Guide 2025 - CAST 2024: Remarkable releases for 2025
New Varieties Digital Guide 2025 - 13
New Varieties Digital Guide 2025 - 14
New Varieties Digital Guide 2025 - 15
New Varieties Digital Guide 2025 - 16
New Varieties Digital Guide 2025 - 17
New Varieties Digital Guide 2025 - Variety Information: Award Winners
New Varieties Digital Guide 2025 - 19
New Varieties Digital Guide 2025 - Variety Information: A bevy of blooms
New Varieties Digital Guide 2025 - 21
New Varieties Digital Guide 2025 - 22
New Varieties Digital Guide 2025 - 23
New Varieties Digital Guide 2025 - Culture Report: Grama grass
New Varieties Digital Guide 2025 - 25
New Varieties Digital Guide 2025 - Culture Report: Cultivating the beauty of viola 'silver gem'
New Varieties Digital Guide 2025 - 27
New Varieties Digital Guide 2025 - 28
New Varieties Digital Guide 2025 - 29
New Varieties Digital Guide 2025 - Houseplants: 2024: Year of the African Violet
New Varieties Digital Guide 2025 - 31
New Varieties Digital Guide 2025 - Trial Garden Report: Brilliant blooms in North Carolina
New Varieties Digital Guide 2025 - 33
New Varieties Digital Guide 2025 - Trial Garden Report: Penn State flower trials
New Varieties Digital Guide 2025 - 35
New Varieties Digital Guide 2025 - 36
New Varieties Digital Guide 2025 - 37
New Varieties Digital Guide 2025 - 38
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