Q.Knockout Rose Bush
Can you plant a Knockout Rose Bush in a large container? Do you need special potting soil?
As with any container garden, make sure there is sufficient drainage. Knock Out’s ( like most plants and shrubs) do not like to sit in water. And speaking of which, water every 2 to 3 days under normal conditions. When it is extremely hot, water daily.
Water the newly planted knockout rose well immediately after planting. Add a 1-inch layer of mulch to the top of the potting soil, making sure that the mulch does not touch the stem of the rose. Place the container in a location that receives about six hours of direct sunlight each day.
Fertilize the rose plant once a month during the entire growing season.
https://www.gardeningknowhow.com/ornamental/flowers/roses/container-roses-growing-roses-in-pots.htm
