IPA: /nɒnˈhɑːrdi/
KK: /nɑnˈhɑrdi/
Not able to survive in harsh conditions or climates.
The nonhardy plants need to be brought indoors during the winter.
Nonhardy → It is formed from "non-" (meaning not) and "hardy" (from Old French *hardi*, meaning bold or brave). The word "nonhardy" means not bold or not able to withstand difficult conditions.
Think of 'not' ('non-') being combined with 'bold' or 'brave' ('hardy') to remember that 'nonhardy' describes something that is not able to endure tough situations.