Cultivation

Irrigation — New Guinea Impatiens

Impatiens New Guinea Group

The irrigation regime for New Guinea impatiens requires maintaining moderate substrate moisture with mandatory pH control in the 5.8–6.2 range to prevent root rot and micronutrient toxicity.

In the reference 30 varieties crop New Guinea Impatiens, where this is mentioned in the description.

It is necessary to alternate the substrate state between moist and moderately moist, avoiding complete saturation, as overwatering promotes the development of Pythium and Rhizoctonia, as well as stem elongation. Complete drying of the substrate is unacceptable, as it leads to flower bud drop and leaf margin burn.

Under production conditions, it is important to consider plant age: seedlings are extremely sensitive to overwatering, while water requirements increase as the plants mature. To avoid Botrytis infection, water stagnation on the foliage should be minimized, and monitoring the irrigation water composition is essential to maintain a pH level of 5.8–6.2, which prevents leaf damage from excess iron and manganese.

General information about the subject — on the page Irrigation.

Sources8

Varieties of New Guinea Impatiens mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.