When is the best time to top-dress roses?
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When is the best time to top-dress roses? Here are the answers you are looking for.
Lately, the most frequently asked question I've received is about how to prune roses after blooming. I have already explained rose pruning in previous articles, so those who still don't know how to prune can refer to the past articles.
Today I want to talk about fertilizing after blooming. Although I have mentioned rose fertilization before, many gardeners are still unclear. Now is a good time to top-dress roses, so I want to emphasize this again.
Official top-dressing time for roses: Roses should be fertilized after the first bloom before summer. Now is exactly the time after the first bloom and right before summer, which is a perfect time for top-dressing.
Objective of top-dressing: This time of fertilizing is mainly to provide nutrients for the second bloom of roses and to store energy to cope with the hot summer weather.
What kind of fertilizer should be used? The top-dressing mentioned here refers to applying long-acting fertilizer, not fast-acting fertilizer. Fast-acting fertilizer should be applied frequently, about once every 10 days, while long-acting fertilizer provides a continuous supply of nutrients and does not need to be applied as frequently.
Common long-acting fertilizers include fermented organic fertilizers, such as chicken manure and sheep manure, as well as inorganic fertilizers, which are the commonly used Ogreen fertilizers, and can be divided into slow-release and controlled-release fertilizers.
Both fermented organic fertilizers and slow-release or controlled-release fertilizers are long-acting fertilizers that can provide nutrients to roses for a long time.
However, it should be noted that the release of slow-release fertilizer is greatly affected by temperature, and it can easily cause fertilizer damage due to concentrated release during high summer temperatures. Therefore, it is recommended not to use slow-release fertilizer in this fertilizing plan. If there is no organic fertilizer available, controlled-release fertilizer can be used, which is relatively safer.
How to top-dress? For potted roses, before applying organic fertilizer, you can first dig out a layer of potting soil on the surface, then spread a layer of fermented organic fertilizer around the edge of the pot, and then put the dug-out soil back to cover it.
If controlled-release fertilizer is used, the method is the same as that for fermented organic fertilizer, but the amount should not be excessive.
Note: Many people are lazy and directly sprinkle controlled-release fertilizer on the surface of the pot, which can cause some of the fertilizer effect to be lost. It's best to apply it shallowly or in holes.
For roses planted in the ground, it is also time to apply long-acting fertilizer to replenish nutrients. First, dig out the surface soil 2 cm deep within a 20 cm range around the rose roots, then spread a layer of organic fertilizer, and then fill the soil back in. Use a rake to mix the soil and organic fertilizer.
The main purpose of this is to improve the soil and prevent it from becoming compacted.
Many gardeners do not know the difference between long-acting and fast-acting fertilizers and are afraid to use fast-acting fertilizer after applying long-acting fertilizer. This is a wrong idea.
Even after applying long-acting fertilizer to roses, you can still apply fast-acting fertilizer; there is no conflict. Long-acting fertilizer has a slow and sustained effect, while fast-acting fertilizer has a very rapid effect, usually within 7-10 days. Therefore, the application frequency of fast-acting fertilizer is about once every 10-15 days.
After saying all this, do you know how to top-dress roses now? If you have learned, take action immediately! If you have any questions, feel free to leave a message. Follow the public account "Garden (ilanyao)" to find me and learn more flower-growing skills!
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