When to Fertilize Home-Grown Roses? Plus a Homemade Mixed Fertilizer Recipe
Roses, known as the queen of flowers and also called “monthly red,” are evergreen or semi-evergreen low shrubs that bloom in all four seasons. Today's topic is When to fertilize home-grown roses? How to make your own mixed fertilizer?
1. When to fertilize home-grown roses?
Rose fertilization is usually carried out a few days after irrigation, when the soil is neither too dry nor too wet, by evenly scattering the fertilizer around the plant at a distance of 20-25cm from the stem. If the plants are densely planted, band application can also be used, that is, spreading the fertilizer between the rows of plants, then shallow plowing and loosening the soil, and watering to help the fertilizer dissolve and penetrate.
Supplementary chemical fertilizer is often applied after the previous crop has finished flowering, to encourage the plant to push out new buds. Or it is applied in early spring when soil temperature is low, microbial activity is poor, and organic fertilizer releases slowly, to prompt early flower bud emergence in spring. It is also applied after pruning or when the plant is deficient in nutrients.
2. How to make your own mixed fertilizer?
It can be mixed and used according to the needs of the roses, or used alone. The most commonly used combinations are: urea 1.25g, monopotassium phosphate 1.25g, water, forming a complete fertilizer of nitrogen, phosphorus and potassium at a concentration of 2.5 per thousand. Another formula is: urea 112.7g, potassium sulfate 112.7g, magnesium sulfate 56.3g, iron sulfate 28.2g, water 284.3L, at a concentration of 1.25 per thousand. A formula for correcting trace element deficiency: manganese sulfate 15g, magnesium sulfate 20g, chelated iron 10g, boric acid 5g, water 25L, at a concentration of 2 per thousand.
Before cultivating roses, apply a large amount of organic fertilizer and add an appropriate amount of phosphate fertilizer; at the initial stage of planting roses, apply an appropriate amount of urea to promote early growth; after pruning and during the period of active rose growth, topdressing should be done frequently.