Many people make the mistake of fertilizing just at the base of the trunk and the food does not have a chance to reach the full root system, which extends to the edge of the canopy. These times are: If you are using water soluble fertilizer, you can fertilizer with a weak solution once every 2 weeks in spring and summer and once every four weeks in fall and winter. The best hibiscus tree fertilizers can be either slow release or water soluble. This will be a fertilizer that has all the same numbers. By creating an account you agree to the Hunker, Gardening Know How: Tips For Tropical Hibiscus Fertilizing. NPK: 10-4-12. Indoor hibiscus plants are kept in pots, which only provide a certain amount of nutrients since the soil it has access to is very limited. 3. In this case, you don’t have to worry about initial fertilizing. NPK: 5-4-6. Even though it’s primarily … More Info: Hibiscus Booster Extra potassium for bigger, more colorful, more numerous blooms and for fuller, greener, stronger bushes. Homemade fertilizer is an easy DIY project that can come from various items found in your home. Many varieties grow quite large, reaching heights of up to 12 feet, but more dwarf cultivars are available. The best fertilizer for the Hibiscus tree is a Medium amount of Nitrogen (N) with a very little amount of Phosphorus (P) and High amount of Potassium (K). Sign up for our newsletter. A growing hibiscus plant needs lots of nutrients in order to bloom well. When autumn settles in, this fertilizer should be used less often and prolonged to every four weeks over autumn and winter. Use 2-3 times per year in soil. However, if you choose to feed your plant twice a year, opt for a balanced 10-10-10 or 10-20-10 fertilizer for spring feeding and use a light application. Watching my dad as a child be able to fix anything made me want to be just like him. Check Latest Price. Many hibiscus owners neglect their plants by not fertilizing them. Hibiscus plants need a fertilizer with a medium to high amount of nitrogen (N), a low amount of phosphorous or phosphate (P), and a high amount of potash (K) … Shrub forms of hibiscus are bushy, woody plants that are cold hardy in zones 5-9. If you want to keep your hibiscus plant healthy and continually flowering, it's important to know how to properly fertilize this plant. The best location. If you have a low spot in the garden, perennial hibiscus is an excellent bet for mid- to late-season color. Hibiscus is a voracious feeder, requiring regular feeding, especially if grown in containers. This product is also purely natural to prevent any potential damages to the plant and yourself. Simply dry the used grounds on a newspaper in sunlight for two or three days then sprinkle it over the soil from the trunk continuing outward to where the branches end. Most of the time, when you buy your hibiscus it will already come with a slow release fertilizer applied to the soil. Finally, the potassium also helps with root development and should also give the plant an overall boost in health. If you will be using a water soluble fertilizer, use it at half strength to avoid over fertilizing the hibiscus tree. Potassium assists in almost every part of plant growth and metabolism. Use this dirty water to water all houseplants, including your hibiscus, every other week for great results. If you are using a slow release fertilizer, you will want to fertilizer 4 times a year. Over fertilizing hibiscus plants result in burning the roots or providing too much fertilizer, which will cause in fewer or no blooms or even yellow, dropping leaves. Also, it comes with magnesium, sulfur, and iron for more bulging blooms. If you find that you have over fertilized your hibiscus and it is blooming less, or not at all, add phosphorus to the soil to help bring the hibiscus blooms back. These are the three key elements that a hibiscus plant craves because they all offer positive nutrients that will benefit the plant. As for how often to do it, it depends on the season. If you go with a DIY fertilizer, each method will have its own frequency due to the item you select to make your fertilizer. Whether your hibiscus grows in the ground or in a pot, make sure that you put fertilizer out to the edges of the hibiscus tree’s canopy. This flowering plant also makes for a great household plant if you want to add a nice leafy plant that flowers relatively easily. , including your hibiscus with a slow release or water soluble fertilizer, best fertilizer for hibiscus grounds actually nitrogen. 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