: For harsh climates, experts at Midwest Living recommend resilient species like Purple Coneflower , Salvia , and Lamb’s Ear , which are resistant to heat and drought. 4. Psychological and Existential Resilience
: The Washington Post notes that viruses like SARS-CoV-2 are "hard to kill" because they aren't technically alive; they are simply genetic material waiting for a host, making them resilient to many traditional environmental threats. Hard to Kill
: Training in varied conditions—hot, cold, or even wearing non-traditional gear like hiking boots—to ensure the body can perform anywhere. 2. Biological Survival : For harsh climates, experts at Midwest Living
Metaphorically, the phrase applies to abstract concepts like hope or human spirit. For example, some argue that "though hope is frail, it's hard to kill," emphasizing that internal resolve often outlasts external hardship. It has also been used in business contexts, where "cockroach startups" are defined by their ability to survive lean times through extreme frugality and persistence. : Training in varied conditions—hot, cold, or even
: Building a "combat-ready core" through functional movements like single-arm farmer's walks and barbell rollouts.
: Low-maintenance options like the Snake Plant or ZZ Plant are often marketed as "hard to kill" because they thrive in low light and require minimal watering.