Four Star Culture Guide - 2019 - 60

VERBENA
Lanai®

NUTRITION
pH: 6.0 - 6.4
EC: (2:1 extraction method) .6 - .9
Constant feeding at 150ppm - 200ppm nitrogen with a
fertilizer selected for grower's water quality and soil mix is
recommended.
TEMPERATURE
Rooting out: 65 - 72 F
Growing on: 65 - 72 F
Holding: 50 - 60 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.
TIMING
4" - 5"/Grande™: 4 - 6 weeks with one 52 cell Supernova plant.
6"/1GL Royale™: 6 - 7 weeks with one to two 52 cell
Supernova plants.
8": 7 - 8 weeks with two to three 52 cell Supernova plants.
10" - 12" Hanging Basket: 9 - 11 weeks with three to five
104 Liner plants.
Crop time ranges are based on early season to later peak
season plant performance and wholesale grower to retail
grower size expectations.
Supernova 52 Liners are used at Four Star and are
recommended for best flower timing, flower count and
plant size in smaller containers. If 104 Liners are used for
small container 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 a 104 Liner. If mixing Supernova
and 104s in combination plantings, a pre-plant drench of
Sumagic® (uniconazole) or Bonzi® (paclobutrazol) to the 104s
may be helpful to even out plant growth and vigor.
PLANTING
Lanai® Verbena should be planted into a well-drained soil mix
selected to match individual water quality and fertilizer blends.
Water in without saturating the mix and maintain a constant
moderate soil moisture level for the first seven to 10 days for
establishing new rooting. Plants have already been pinched
once during the production cycle. When using Supernova
treated liners, NO pinching is required unless deemed taller
than desired. If 104s are used, pinch at transplant if size allows.
Lanai branch quite well and pinching is not necessarily needed
except for "shaping" purposes. A broad spectrum fungicide
drench with a material such as Banrot® (etridiazole plus
thiophanate-methyl) can be helpful.
LIGHT/LIGHTING
Lanai Verbena should be grown in a high light area of the
greenhouse for optimal flowering and plant development.
Supernova Liners have been treated for earlier flowering and
will not require additional grower lighting. If very early crops
are scheduled before the onset of 12-hour natural daylengths,
daylength extension lighting is helpful. Also, if growing from
104 Liners, additional lighting to 14 hours/day lighting is
required for early spring finish dates. Additional PGR treatments
may also be required on non-Supernova treated plants.

Four Star Greenhouse I www.pwfourstar.com I 734-654-6420
60

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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