Detailed Explanation of Fertilization Methods for Herbaceous Flower Cultivation

The fertilization techniques for flower seed production differ from those for cultivating ornamental flowers, with the main characteristics as follows:

1. No fertilization during the seedling stage

Before seedling raising, it is best not to include chemical fertilizers, base fertilizers or other fertilizers in the substrate, to avoid difficulty in controlling the nitrogen-phosphorus-potassium ratio, which can lead to seedling burn and death.

2. Foliar spraying of fertilizer two to three weeks after transplanting

Mainly spray monopotassium phosphate or some yield-increasing agents and the like. The application of nitrogen fertilizer depends on the species: Calendula officinalis (calendula), Matthiola incana (stock), and Antirrhinum majus (snapdragon) may be appropriately top-dressed or given a small amount of N fertilizer by foliar spray within 3 weeks after transplanting, and after 3 weeks phosphorus and potassium fertilizers should be applied; Salvia splendens (scarlet sage) and Zinnia elegans (zinnia) should not be given nitrogen fertilizer throughout the entire growth period, otherwise there will be no harvest at all.