The Q&A Archives: Feeding Roses

Question: When do you start feeding roses in the Spring? How much Miracle Gro do you use?

Answer: Fertilizing roses is a popular topic for endless discussion -- and one everyone has an opinion about! In general, roses do prefer a rich diet. The soil pH should be near 6.0 in order for the rose to be able to use the nutrients. Frequency will depend to some extent on what type of roses you are growing (and what type of fertilizer you use). Repeat bloomers such as hybrid teas seem to respond better to frequent light applications, while the older varieties of shrub roses are a bit less demanding and so once a year in early spring may be enough for them. You can use granular, powdered or timed release type fertilizer or, if you have the time and patience, the foliar spray type or even a combination; nitrogen is probably the most important nutrient, along with phosphorus and potassium. Some gardeners will also add Epsom salts, about a half a cup per plant per month, to provide magnesium. However, to really know what nutrients are needed in what quantity (too much is no better than too little) you should run some basic soil tests.

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