If you want to have beautiful and healthy flowers, proper fertilizers are a must. The best fertilizers for flowers promote overall plant flowering and growth, fertilizing the leaves, stems, roots and flowers. When only flowering is promoted without considering the other parts of the plant, the consequence will be indeed many flowers, but on sickly plants. There is no general fertilizer for completely feeding the plant, so the best solution is to combine different methods.
Chemical Granular Fertilizers for Flowers
Chemical granular fertilizers are perfect if you want fast results, because the nutrients act quickly. In addition, they are can be applied very easy and feature a variety of formulations. It is recommended to choose a formulation whose middle number (phosphorous) is bigger than or equal to the other two numbers on the label. Make sure the fertilizer includes minor elements such as manganese, calcium and magnesium. General fertilizers have 10-10-10 and 6-6-6, while granular fertilizers for flowers have a higher middle number (5-10-5 or 15-30-15).
Chemical Liquid Fertilizers for Flowers
This kind of fertilizer must be either applied directly to the soil surrounding the plant or as sprayed directly onto the plant. The most used liquid fertilizers have the formulations 20-20-20 and 15-30-15. The formulations for blooming plant have very low first and third numbers and very high middle numbers from 30 to 50 or even more, but make sure you alternate their using with a more equilibrated fertilizer.
With the formulation 0-20-0, superphosphate is a high-concentrated version of phosphorous fertilizer achieved by combining phosphate rock with sulfuric acid. Even if it generally used in commercial operations, it can be also used in small amounts for encouraging blooming in home gardens.
Fish Meal and Fish Emulsion
Fish meal and fish emulsion are rich sources of phosphorus, potassium, nitrogen, sulfur and trace elements. In plus, fish emulsion does not burn the plants, so it is a great foliar feeder.
Made of crushed, coarsely ground bones, bone meal is very rich in phosphorus and has the regular formulation of 4-12-0. Bone meal is generally placed in holes when planting the flowers.
Compost and Rotted Manure
The nutrients from compost and manure are not many, but they are precious because they come from an organic source. The microbial activity of the soil is enhanced by these natural fertilizers, leading to healthy roots that absorb nutrients better.
Organic Granular Fertilizers for Flowers
Organic granular fertilizers have a lot of micronutrients and can be applied easier than manure and compost .Their general formulations are 1-1-1 and 2-2-2.