What is the reason for the black and green appearance on half of the rose stem?
Do you know these? The introduction to the green plant flowers regarding the reason for the black and green appearance on half of the rose stem, please see the detailed introduction below.
What is the reason for the black and green appearance on half of the rose stem?
Some flower enthusiasts may encounter a situation where the stem of the rose is half black and half green while caring for it. What could be the reason for this? Let's understand it below.
What is the reason for the black and green appearance on half of the rose stem?
Generally, if the rose seedlings are not strong enough or if the bottom buds of the rose grow too densely, it can lead to insufficient water flow within the branches, resulting in disuse necrosis. In most cases, these conditions do not require special treatment and will not cause bacterial infections. Usually, the stem will turn black and yellow, and it will stop when it reaches a robust bud point. If it looks uncomfortable, it can cut off all the black tissue until it reaches normal tissue, which will not cause serious damage to the rose.
How to deal with the black and green appearance on half of the rose stem
1. Cut off all parts of the black stem, otherwise it will spread!(Some branches may look alive on one side, but all the branches are dead in the middle, and these branches also need to be cut off.)
2. A mixture of methylethyl thiourea and metalaxyl-M can be used for root irrigation and leaf spraying of the plant, which can effectively inhibit the growth.
3. Use the medicine "First Fine" directly poured into the soil. (This is a bacterium that directly invades the plant and eats away bacteria.)
4. Keep the substrate dry, reduce watering, and water only when dry. A dry environment helps to inhibit the attack of fungal spores.
The above information about the reason for the black and green appearance on half of the rose stem is for reference by green plant enthusiasts, and it is hoped that it can solve your problems in green plant flower management.