“In general, nitrogen is the be all and end all of nutrients,” Jonathan Russell-Anelli, Ph.D., a senior lecturer in Cornell’s School of Integrative Plant Science, tells mbg. “It is generally the most limiting and it is needed in abundance and is often needed quickly. P and K also are often required beyond the soil’s ability to meet immediate needs.”
Beyond that, vegetation use sulfur (S), magnesium (Mg), carbon (C), oxygen (O), hydrogen (H), and really small quantities of iron (Fe), boron (B), chlorine (Cl), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo). “Plants combine these nutrients with sunlight, air, and water to make their own food through the process of photosynthesis,” Leslie F. Halleck, M.S., a licensed skilled horticulturist and author, explains.
You’ll usually see three numbers in your fertilizer label, which converse to its ratio of nitrogen, phosphorous, and potassium. If yours reads 24-8-16, for instance, it has 24% N, 8% P, and 16% Ok by weight, and doubtlessly a few of these micronutrients. Water and/or fillers make up the remainder of the load.
Nitrogen, the workhorse nutrient, helps the expansion of the plant’s leaves whereas phosphorous helps out with root progress and flowering. Potassium assists with all-around plant well being. Houseplants which have fewer leaves like succulents require much less nitrogen, which is why you may discover a succulent-specific fertilizer at a 5-10-10 ratio, for instance. Flowering houseplants, however, may admire a better P worth. All in all although, most houseplants will probably be proud of a fertilizer that has a good ratio of all three, making this a very good starter decide.
The commonest fertilizer varieties are liquid fertilizers, which you should utilize instantly on a plant, and granular ones that should be dissolved in water. You can even discover slow-release fertilizers that solely must be utilized as soon as each few months, however this selection provides you much less management over how a lot fertilizer your vegetation are literally getting.