What should be paid attention to when fertilizing roses
Do you know these? Let's take a look at the small knowledge of rose fertilization and what should be paid attention to!
What should be paid attention to when fertilizing roses
Many people say they don't know how to fertilize roses, it's easy to overdo it and easy to do too little. First of all, we need to make it clear: what are the uses of nitrogen, phosphorus, and potassium?
The role of nitrogen fertilizer: It can make the rose branches and leaves flourish, increase chlorophyll, make the leaves greener, and promote rapid plant growth. (But if used excessively, it can easily cause the plant's branches to become soft, the stems and leaves to grow excessively, weak disease resistance, and poor cold resistance.)
The role of phosphorus fertilizer: It promotes the toughening of the rose stem, the differentiation of flower buds, large and colorful flowers, making the rose grow vigorously, develop well, generate new roots, and improve cold and drought resistance.
The role of potassium fertilizer: The role of potassium fertilizer is to promote the strengthening of the rose stem, enhance resistance to diseases and insects, cold resistance, and resistance to lodging, promote the roots to be stronger, and make the flowers large and colorful.
Why does "nasal hair flower" appear?
During the differentiation of rose flower buds, excessively high or low temperatures may cause mutations; secondly, using only nitrogen fertilizer for supplement fertilization can result in too much nitrogen; moreover, malnutrition can also cause the rose bud to grow "green nasal hair"; finally, if a hybrid variety is unstable, it is more likely to grow such "green nasal hair".
Flowering plants mainly use high phosphorus and potassium fertilizers, while ornamental leaf plants mainly use balanced fertilizers.
Three days after the new seedlings are potted at home, a very dilute high phosphorus and potassium fertilizer can be sprayed to help the plants adapt to the pot.
After new buds start to grow - high nitrogen fertilizer promotes stem thickening and sprout growth;
After new leaves appear - high phosphorus and potassium fertilizer prepares for flowering;
After pruning flowers - a slightly thicker high phosphorus and potassium fertilizer promotes flower branching;
Three days apart - a balanced fertilizer once.
Then continue to use high phosphorus fertilizer at a normal ratio until after flower pruning, and then cycle the post-flower pruning operation.
If the outdoor temperature exceeds 28 degrees, it is not recommended to fertilize. If you must fertilize, dilute the original ratio by double and then fertilize.
If the plant does not bloom in summer (pick flower buds), it can promote sprout growth.
Very heat-sensitive varieties: Only prune the残 flowers in summer, such as: Gabriel Archangel, Lucifer, and other Japanese flowers.
Heat-sensitive varieties: Mainly light pruning, trimming weak branches, and withered branches;
Heat-tolerant varieties: Can be pruned by 1/3.
The above sharing on what should be paid attention to when fertilizing roses, hoping to bring a little help to your life!