Double Knock Outs are hardy; light frost won't harm them. Atlanta's last damaging freezes are likely past. It takes 3-4 days of sub-zero temperatures to kill canes to the ground.
No need for frost covers. Plant now and establish before summer heat.
Rose Slug (Sawfly) Damage: Identification and Control
Yellow Spots on Knock Out Roses: Black Spot Management for Large Plantings
Red Leaves on New Double Knock Out Roses: Normal or Problem?
Pruning Knock Out Roses for Winter: Height, Timing, and Hedge Trimmer Technique
Transplanting Knock Out Roses in Zone 5: Fall vs. Spring Timing
Knock Out Roses Losing Leaves Annually in Alabama
Powdery Mildew on New Knock Out Roses in Tampa: Treat, Don't Return
Knockout Rose Yellow Leaves After Drought Then Rain: Weather Stress
Sudden Death of Established Knock Out Roses in Florida
One of Eight Potted Knock Outs Yellowing in Houston Heat
Deadheading Knock Out Roses: To Trim or Not to Trim Hips
Knock Out Rose Leaves: White Spots → Holes = Shot Hole Fungus
Black Spot on Knock Out Roses in Florida: Climate, Watering, and Variety Reality
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