Four Star Culture Guide - 2019 - 53

SCAEVOLA
Whirlwind®

NUTRITION
pH: 5.5 - 5.8
EC: (2:1 extraction method) .6 - .9
Constant feeding at 200ppm nitrogen with a fertilizer selected
for grower's water quality and soil mix is recommended.
Fertilizer blends with lower phosphorus levels are
recommended.
TEMPERATURE
Rooting out: 65 - 72 F
Growing on: 65 - 72 F
Holding: 60 - 62 F
WATERING
Maintain moderate soil moisture. Allow the soil to cycle from
moist to slightly dry. Avoid both severe dry downs/wilting and
long periods of wet soil, especially at cooler temperatures.
Growing at lower moisture levels can be beneficial towards
producing a more compact plant with fewer PGRs required.
TIMING
4" - 5"/Grande™: 4 - 5 weeks with one 52 cell Supernova® plant.
6"/1GL Royale™: 5 - 7 weeks with one to two 52 cell
Supernova plants.
8": 7 - 9 weeks with one to two 52 cell Supernova plants.
10" - 12" Hanging Basket: 10 - 12 weeks with three to five
104 Liner plants.
Supernova 52 Liners are used at Four Star and are
recommended for best flower timing, flower count,
and plant size in smaller containers. If 104s are used for
spring production, supplemental lighting, additional crop time,
pinching, and additional PGR applications may be required.

Supernovas are not recommended or required for baskets and
large containers, but many growers are beginning to use them
for early hanging basket and upright needs. Growth habit and
timing may be different from 104 Liners, but flowering time and
"retail ready" containers can be produced in portions of the
year when not possible from 104s. If mixing Supernova and 104
Liners in combination plantings, a pre-plant drench of Sumagic®
(uniconazole) or Bonzi® (paclobutrazol) to the 104s is usually
required to even out plant growth and vigor.
PLANTING
Liners should be planted into a well-drained soil mix selected
to match individual water quality and fertilizer blends. Water in
thoroughly without saturating the mix and maintain a constant
moderate soil moisture level for the first seven to 10 days to
establish new rooting. When using Supernova treated liners,
NO pinching is required unless deemed taller than desired. If
104 Liners are used, plants can be pinched again at transplant if
desired. Or, an additional pinch for large containers can be given
usually two to four weeks after planting.
LIGHT/LIGHTING
These plants should be grown in a high light area of the
greenhouse for optimal plant development. Scaevolas should
be scheduled to finish based on their outdoor temperature
requirements. Additional lighting is not required, but helpful in
earlier crops. Crops planned from Supernova Liners should not
need additional lighting, unless planned for quite early finish
dates.

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.

Four Star Culture Guide - 2019

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