What to do after the failure of rose blooming in summer
You may not know what to do after the failure of rose blooming in summer and the correct maintenance methods for败 (failed) roses in summer. The specific content is as follows:
When the weather gets hot, all kinds of flowers and plants become wilted, except for roses that continue to bloom. As long as we take good care of them, roses in summer can still bloom in abundance. After the first wave of rose blooms fails in summer, applying "4 techniques" can quickly lead to the formation of new flower buds, and within a month, the roses will bloom again in abundance!
Technique 1: Prune the spent flowers
Roses are very pruning-tolerant plants and need to be pruned almost every season. The first thing to do after the flowers fail is to prune the spent flowers. If the spent flowers are left on the branches, they will continuously consume the nutrients of the plant, affecting the growth of subsequent flower buds and leading to a reduction in the number of flowers.
When pruning spent roses, do not just cut the flower buds. When pruning spent flowers, cut from two pairs of leaves below the flower, removing the spent flower and a section of the stem and leaves. This pruning promotes the growth of lateral buds on the stem, which will slowly grow into lateral branches and form flower buds at the branch tips, resulting in the second wave of flowers.
Technique 2: Add fertilizer to supplement nutrients
After pruning the spent flowers, the roses quickly enter the stage of growing lateral branches, increasing their demand for nutrients. We need to supplement nutrients through fertilization. However, it is important to note that during hot summer weather, the roots are very sensitive to fertilizer concentration. Fertilization should be controlled in dosage, better to use less than more to avoid fertilizer damage.
What to do after the failure of rose blooming in summer
Top-dress after pruning
After pruning the roses, the main direction is to grow lateral buds and branches. We prepare some well-fermented organic fertilizers, such as decomposed cow and sheep dung, sesame cake fertilizer, fruit peel fertilizer, etc., or we can use milder chemical fertilizers, such as slow-release fertilizers, controlled-release fertilizers, etc. For organic fertilizers, small holes need to be dug along the edge of the pot, and a small amount of organic fertilizer is buried in the soil. For slow-release fertilizers and other chemical fertilizers, no holes need to be dug; just sprinkle a small amount on the soil surface.
Fertilizing before flowering
About 15-20 days later, the lateral branches of the roses will grow, and flower buds will appear at the tips of the branches. At this time, water-soluble flowering fertilizers, such as potassium dihydrogen phosphate, Flower多多2号, etc., should be used. Taking potassium dihydrogen phosphate as an example, mix the powder with water in a 1:1000 ratio to make a fertilizer solution. Use the fertilizer solution to water the rose roots and spray the branches and leaves once a week. Stop fertilizing immediately after the flower buds open.
Precautions
Do not fertilize the roses when the summer temperature exceeds 35 degrees, as fertilizing under high temperatures can burn the roots and cause fertilizer damage.
Technique 3: Pay attention to avoiding rain
Summer is the peak period for black spot disease in roses. After roses contract black spot disease, the main manifestation is on the leaves, with brown or black-purple spots appearing on the leaf surface. If not treated in time, the small spots will spread to the entire rose plant, eventually leading to the complete loss of leaves.