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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comA service pust nutrient applications on all of my shrubs 3 times a year. They call it deep root fertilization. If this is donedo I need to[ or should I] do feedings throughout the year?
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1 Comment To "Knock Out Roses"
#1 Comment By roseman On 05/11/2018 @ 8:59 am
You may not need to. I would ask for a breakdown and the NPK rating for their applications. This way you can be sure what they are getting. Giving the rosebushes some kelp meal and alfalfa meal (1/2 cup of each) twice a year would likely be good to do. Work the meal into the soils lightly and water it in. I would apply one then wait a couple weeks and apply the other.