June 2022 - 32

CULTURE REPORT
Streptocarpus
Ladyslippers
This houseplant has been given new life with 12 bright colors
and continuous blooms year-round.
BY JIM DEVEREUX
A
classic houseplant selection that
has undergone a reinvention is the
streptocarpus. First documented for
commercial use in England in 1818 by the Kew
Gardens plant collector James Bowie and native
to South Africa, streptocarpus production has
been primarily achieved with private stock that
has often been questionable in cleanliness.
Tissue culture production has been very
successful in recent years allowing for uniform
commercial production. The delivery of tissue
culture translates into full trays that finish on
schedule versus leaf production that may have a
five to six weeks difference in finishing.
RECENT RESURGENCE
Green Fuse Botanicals offers the Ladyslippers
series in 12 bright, floriferous colors. Being
day length neutral, the Ladyslippers can be in
flower year-round. And, once initiated, they will
bloom continuously regardless of light levels. I
have several Ladyslippers in my home that have
bloomed for years on end.
32 JUNE 2022 GPNMAG.COM
Streptocarpus have been well recognized
as people-friendly plants, as they thrive in
the environments we all prefer. If you are
too warm or cold, so is the streptocarpus!
While they look delicate, they are an
extremely resilient plant that ship well on
racks or boxed. This promotes sales any time
of year as spring color or to be positioned as a
pot crop for interior sales.
For large-scale commercial production, it
is best to focus on the " vein " flower types,
indicated by " Ice " in the name. These " Ice "
types will all flower uniformly and may load and
ship as a " row run. " The novelty selections are
indicated by " Bicolor. " While extremely popular,
they are best for the grower/retailer, as they
have a bloom window that may reach two weeks
between the colors.
PRODUCTION SEASONS
They can be grown in 4-inch to 12-inch
pots for weekly sales or for spring production,
combination baskets, or patio containers.
TCIII
Propagation:
Propagation size is best at 100 cell or similar.
Glue based plug is preferred, but loose fill is
possible. Tenting to increase relative humidity to
75 to 80% is ideal. Media temperature should be
maintained 72 to 74° F. Root zone emergence in
four to five days.
Streptocarpus is not a heavy feeder; 55 to 65
ppm nitrogen is sufficient. Time in propagation is
two weeks. Hardening phase is an additional four
weeks at 65 to 68° F.
Yellow
Blue Eye
Ladyslippers

http://www.GPNMAG.COM

June 2022

Table of Contents for the Digital Edition of June 2022

June 2022 - 1
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