Cultivation
Impatiens New Guinea Group
New Guinea impatiens is a frost-sensitive tropical perennial completely devoid of frost hardiness. Any exposure to sub-zero temperatures results in damage or death of the plant.
In the reference 29 varieties crop New Guinea Impatiens, where this is mentioned in the description.
The plant is classified as frost-tender and lacks mechanisms for adaptation to sub-zero temperatures. Even brief frosts cause irreversible tissue damage, rendering the crop unsuitable for outdoor cultivation where there is a risk of temperatures dropping below freezing.
The temperature threshold for New Guinea impatiens development is significantly higher than the freezing point. Plant growth slows or stops completely at temperatures below +18°C, and normal vegetative development requires consistent nighttime temperatures of at least +7...+10°C.
General information about the subject — on the page Suitability for freezing.
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.
Impatiens New Guinea Group · New Guinea Impatiens
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