Over-watering will result in leaves turning black and defoliating. A media EC of 2.0 is optimum. Alternate with calcium nitrate on a regular basis. Provide a complete minor element program. Provide periodic clear water application if excess soluble salts accumulate.
Low temperatures promote compact growth, but slow development.
Provide good air circulation at all times. Light Bright light is ideal for this crop. Retractable roof greenhouses and field production are suggested where possible. This should be the second pinch with the first completed during propagation. Spacing Plants may be established pot-tight but should be spaced before foliage touches.