Overwintering ‘Ruby Slippers’ Argyranthemum in Zone 7

An Annual That Might Survive With Heat

‘Ruby Slippers’ (Argyranthemum frutescens) is a tender perennial grown as an annual in Zone 7. To attempt overwintering:

• Cut back to 8 inches.
• Keep in heated garage (min 45°F).
• Water sparingly—just enough to prevent desiccation.
• Pinch through winter to maintain bushiness.

Reality

Success is unlikely without a cool greenhouse. Treat as an annual; enjoy it, then replace.