Four Star Culture Guide - 2019 - 104

Supernova® Liner Culture Guide
Supernova® 52 liners offer faster turns and consistent
flowering. They have been treated to provide a blooming,
salable plant in a 4" - 6" container in four to six weeks. While
not recommended for hanging baskets or uprights, some
growers use them for better flower coverage for early season
plantings.
Treatments given to Supernova liners to control vigor are
temporary and will lose effectiveness in three to six weeks,
depending on growing conditions.
As a general guideline, follow the cultural guidelines and the
growth regulator information below for helpful tips on growing
Supernova liners. More specific information can be found on
Four Star's individual variety culture sheets.
NUTRITION
pH: 5.8 - 6.2. For Superbells® Calibrachoa and Supertunia®
Petunia, maintain a lower pH of 5.5 - 5.8.
EC: (2:1 extraction method) .5 - .8
As is true with all Proven Winners®, soil pH and EC levels must
be properly maintained.
TEMPERATURE
Supernova liners grow and perform best at an average
temperature of 65 - 68 F. Colder temperatures are possible but
will delay flowering. Angelface® Angelonia do not flower well
below 68 - 72 F.
WATERING
Containers grown from Supernova liners should be kept
moderately moist, but not saturated. More frequent, lighter
watering is best, as over-watering and fertilization encourages
vegetative growth and flower delay.

LIGHT/LIGHTING
Placing in the brightest greenhouse location available is
recommended. Low light and warm temperatures will produce a
soft plant that grows together rapidly, produces fewer blooms,
and may require more PGR (plant growth regulator) treatments.
Early season plantings flower best when given continued long
days via either daylength extension or night interruption lighting.
PINCHING
None is required or recommended. This would remove the
initiated flowers.
FLOREL® (ETHEPHON)
It is not recommended on most Supernova varieties as initiated
flowers would be aborted. However, Nemesia flower very
readily and often benefit from one application of 500ppm four
to six days after planting.
GROWTH REGULATORS
Certain varieties within a genera may require different growth
regulator treatments, depending on plant size and vigor. Under
Four Star Greenhouse growing conditions, we use this chart
as a guideline. These rates are based on ½-GL of solution per
100 square feet for sprays. Follow recommended levels for
drenches, based on container size. Do not apply under bright,
sunny conditions, as this can cause leaf burn.
A Growth Regulator Treatment Guide is shown on the following
page.

Four Star Greenhouse I www.pwfourstar.com I 734-654-6420
104

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

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