Crop Culture Report: Petunia QT™
Consumer Uses: Flowering pots and mixed containers for use in full sun conditions. This series will hold for several weeks without becoming
Crop planning from cell packs:
Pot size: Plants per pot (pp) Crop Time (weeks)
4” pot (10 cm) 1 pp 4 to 6
6” pot (15 cm) 1 pp 5 to 7
8 to 10” pots (20 to 25 cm) 3 to 4 pp 8 to 10
Day – 60° to 70°F (15° to 21°C)
Night – 50° to 60°F (10° to 15°C)
Media and pH Requirement:
Use a sterile, well-drained soil with a pH range of 5.5 to 6.2. Water thoroughly and let soil dry out between irrigations. Over watering, oxygen deprivation, and poor drained soils may cause foliar chlorosis similar to chlorosis symptoms caused by iron deficiency.
Fertilizer Requirements: Use a balanced feed at 200 ppm. Chlorotic foliage frequently results from deficiencies of Fe and Mn. To avoid chlorosis, ensure that fertilizer sources contain these elements or provide supplemental forms in your fertilizer.
Pinching Requirement: none required.
Disease and Insect Pests: Whitefly, Thrip and Aphids
Pythium and Botrytis: Excessive moisture for long periods of time will damage roots, causing yellowing of plants resembling a nutrient deficiency. Maintain consistent soil moisture and regularly apply preventative root rot fungicides.
Comments: Mounding spreading habit and a day neutral flower response enables grower to sell in bloom in many size pots.
Growth Regulators: B-9 may be effective to control stretch during cloudy weather and for toning finished pots for improved shelf life.
Lighting Requirement: 5,000 to 9,000 ft candles. Crystal White performs best in full to part sun exposure.