Neem oil and cake can both be beneficial for roses. Here's how:
Control pests and diseases: Neem oil and cake contain natural compounds that can help to control pests and diseases in roses. Neem oil can be sprayed on the leaves to control common rose pests such as aphids, spider mites, and thrips. Neem cake can be added to the soil to prevent fungal diseases such as black spot and powdery mildew.
Promote healthy growth: Neem cake is a natural fertilizer that can provide essential nutrients to roses, including nitrogen, phosphorus, and potassium. These nutrients can help to promote healthy growth and strong root development. Neem oil can also help to promote healthy growth by improving soil health and preventing nutrient deficiencies.
Enhance soil quality: Neem cake can help to improve soil quality by increasing soil organic matter and improving soil water-holding capacity. This can help to prevent soil erosion and improve soil fertility. Neem oil can also help to improve soil health by reducing soil compaction and improving soil structure.
To use neem oil and cake for roses, mix neem cake into the soil at planting time or apply it as a top dressing around the base of the plants. Neem oil can be mixed with water and sprayed on the leaves as a foliar spray. It's important to follow the instructions on the neem oil and cake packaging and to avoid over-application, as this can lead to nutrient imbalances in the soil. Additionally, it's important to note that neem oil and cake should not be used in temperatures above 90 degrees Fahrenheit and should not be applied during the heat of the day, as this can cause leaf burn.