Frequently Asked Questions

All seven members in The Knock Out® Family of Roses are self-cleaning so there is no need to deadhead.

Knock Out® Roses can grow fairly large in some parts of the country if not pruned. Periodic trims will keep them maintained at a smaller size (on average 3-4' wide x 3-4' tall). A once a year cut (to about 12-18" above the ground) in early spring (after the last hard frost) is also recommended for maximum performance.

They prefer a balanced "neutral" soil, neither acidic nor alkaline.

The first wave of flowers will be abundant then the roses will typically have scattered blooms for the next five to six week period until another wave of heavy flowering occurs. This will repeat until the first hard frost.

The Knock Out® Family of Roses are winter hardy to Zone 5 and heat tolerant throughout the US. In fact, they thrive in every area of the country except where the winter temperature drops below zero in the the winter.

The Knock Out® Family of Roses will perform beautifully even with out fertilizing.

If you choose to give them an additional boost, it is very important not to fertilize until after the roses are established and go through one bloom cycle.

Use a balanced fertilizer or fertilizer formulated for roses from your local garden center and apply after the first wave of flowering (be sure to follow the specified rates and method of application provided on the product label).

Make sure the soil is moist before you fertilize to avoid burning the roots. Do not fertilize late in the summer as this is the time the rose should be preparing themselves for dormancy and you do not want to create additional unnecessary new growth that will likely die back from the first hard frost.

All of The Knock Out® Family of Roses need at least 5-6 hours of full sun every day. They can tolerate some shade but it is not recommended. The more sun there is, the more they will thrive and produce flowers.