Knockout Roses Stopped Blooming in Zone 6: Summer Heat Slump

Three Knockouts planted last year bloomed well early summer, now nothing. Deadheaded. Zone 6a. Asks if deadheading hurt, and how to restart blooms.

Heat, Not Pruning, Stopped Blooms

Deadheading was correct. But in summer heat, roses shut down. They won't rebloom until temperatures cool.

What to Do

• Nothing. They're not dying.
• Water deeply during heat.
• No fertilizer in heat.
• Wait for fall. They'll bloom again when nights cool.

Normal cycle. No action needed.