Precautions for Soilless Cultivation of Flowers and Differences in Fertilizer Needs Among Different Flowers

Different types of flowers have different fertilizer needs. Below is an analysis of the differences in fertilizer needs among several different types of flowers.

1. For foliage-oriented flowers, the emphasis is on applying nitrogen fertilizer; variegated-leaf flowers need more phosphorus and potassium fertilizer; flowers that are frequently pruned need an increased proportion of phosphorus and potassium fertilizer to promote the sprouting of new branches.

2. For large-flowered flowers, such as chrysanthemums and dahlias, an appropriate amount of complete fertilizer must be applied before the flowering period so that all flower buds can open, with beautiful shapes and vivid colors.

3. For fruit-oriented flowers, fertilizer and water should be properly controlled during the flowering period, and sufficient complete fertilizer should be applied during the fruit-swelling stage to achieve the expected result of abundant flowers and fruit.

4. Bulbous flowers should be given more phosphorus and potassium fertilizer to help the bulbs become plump; fragrant flowers should also be given more phosphorus and potassium fertilizer once they enter the flowering period, which can promote a rich fragrance.

5. Flowers such as rhododendrons, camellias, and gardenias avoid alkaline fertilizers and need acidic fertilizers to ensure that the plants have luxuriant branches and leaves and produce brilliant blooms.