Knockout Rose Yellow Leaves After Rain Then Heat in Houston

Houston Knockouts: Yellow Leaves Post-Rain Heat Wave

Front (afternoon sun) and back (morning sun) Knockouts. 8 weeks great, then yellow leaves (worse in back). No fertilizer since planting. Watered faithfully 2 weeks, then weeks of rain, then week of sun. Yellow leaves appeared with sun return.

Rain-Heat Sequence Effect

• No sun + rain = yellow leaves
• Sun return + heat = burnt petal edges, brown leaf edges
• Overwatering also yellows leaves (less likely here)
• Widespread issue this year

Outlook

2-3 weeks: new green growth, return to normal. Don't worry.