Four Star Culture Guide - 2019 - 54

SCAEVOLA CONTINUED
GROWTH REGULATORS
Scaevolas are quite responsive to PGRs. Whirlwind® White has
moderate vigor and, if required, should be treated at the lower
recommended rate. Whirlwind Blue and Pink are less vigorous
and have fuller branching, and should require no PGRs, or at
most, a light 2ppm Sumagic spray. Other materials such as
Bonzi, Topflor® (flurprimidol) and Piccolo® (paclobutrazol) can
be used at rates that correspond with the degree of treatment
recommended for Sumagic, but trials should be run first due to
PGR sensitivity. Drenches should not be considered. High light
levels and proper growing temperatures can be very helpful at
managing plant size.
Florel® is very helpful as a spray at 350ppm - 500ppm. Florel
controls vigor to a slight degree, but also encourages branching.
The liners have been treated with Florel through the growing
process and one additional treatment two weeks after planting
into larger containers can be considered. Please note that Florel
treatments should be made at the latest seven weeks before
desired sell date.
When using Supernova Liners, please refer to the
Supernova Culture Guide for specific PGR and
growing temperature recommendations. Florel is not
recommended for use with Supernovas, except possibly
with Nemesia.

PEST and DISEASE MANAGEMENT
There should be little instance of disease if basic cultural
guidelines are followed. Over-watering can lead to Foliar, Stem
or Root Rot. Provide good air movement and maintain moderate
soil moisture levels. Whiteflies, Aphids, and Spider Mites
can be an issue. Scout crops on a regular basis to avoid pest
outbreaks.
OUTDOOR GROWING SCHEDULE
Scaevolas finish best in a controlled greenhouse environment,
but can be moved outdoors after all threat of frost has passed
and weather is consistently warm (late May to early June in
Michigan). This recommendation is based on average spring
weather and should be adjusted for unseasonably severe or
unseasonably mild conditions.
OTHER TIPS
* Provide high light and moderate soil moisture levels, and
schedule for peak season and later finishing to ensure
success.
* Whirlwind Blue and Pink will require little to no PGR
treatments. They are very responsive to PGRs and
should be treated only if needed, and then done so at
the lowest ppm level recommended.

Four Star Greenhouse I www.pwfourstar.com I 734-654-6420
54

The rates and chemicals listed are based on our southeast Michigan growing conditions, and are not recommended for nationwide application.
Please adjust the rates and spray applications to your location and facility.



http://www.pwfourstar.com

Four Star Culture Guide - 2019

Table of Contents for the Digital Edition of Four Star Culture Guide - 2019

Contents
Four Star Culture Guide - 2019 - Cover1
Four Star Culture Guide - 2019 - Contents
Four Star Culture Guide - 2019 - 1
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