Calamansi tree (Citrus X citrofortunella mitis), two years after it is planted is when it starts producing abundant fruits that resemble lime among its 3 inch long leaves. Calamansi is also known as calamondin and it is native to the Phillippines, this citrus tree has dwarf, semi-dwarf and standard root stock varieties ranging from 6 1/2 to 25 feet tall with a strong taproot as an anchoring point. If each calamansi root stock type is well cared for properly, it produces fruits. Although the dense foliage provides ample shade during the summer, paying attention to location, soils and daily care encourages the calamansi plant to produce fruits.
Evaluate the tree’s location by ensuring that it is in a south-facing position. Any nearby trees that shade the calamansi should be removed.. Even partial shade hinders citrus fruit production.
The topsoil surrounding the calamansi should be watered with a garden hose. By watching the moisture move into the ground, ensure that the tree’s soil absorbs water. In general, 1 inch of water should penetrate the ground completely after one hour.
The soil should be tilled with a garden hoe if the soil does not absorb the water well. The topsoil should be amended with compost and perlite, using the garden hoe to create a nutrient-rich but well-drained soil structure.
Nitrogen-rich citrus fertilizer should be applied to calamansi three times during the growing season. Hand-spread the fertilizer out to, and slightly beyond, the drip line before and after the tree flowers, as well as after harvesting.
Using drip irrigation, calamansi plant should be watered until the soil is moist down to 3 feet deep every one to two weeks. A moisture meter can be used to ascertain the moisture depth. An essential key to consistent fruiting is water. Be sure not to over-water the plant, as soggy roots cause die-back from suffocation within the ground.
Organic mulch should be hand spread around the calamansi. 12 inches of space needs to be maintained between the mulch and tree trunk. Mulching covers exposed roots and prevents fungal diseases that hinder fruiting.
Recommended Fertilizer Rate For Calamansi Plant
Nitrogenous fertilizers like urea should be applied at the rate of 50-100 g per tree starting 1 month after planting and every other 6 months. In the second year, the rate is increased to 200-300g per tree. As soon as the tree starts bearing fruits commercially, 350-400 g of complete fertilizer is applied. As the tree becomes bigger the rate is increased.
The fertilizers can be distributed into 6-8 holes around the tree and timed with the onset and end of the rainy season or just before the start of flowering. The incorporation of organic fertilizers in the fertilization plan will also benefit the plant by providing micronutrients.
Fertilizer For Calamansi Plant
#1. Miracle-Gro Citrus, Mango, Avocado Shake ‘n Feed Plant Food
This fertilizeris available in a 4.5-pound container and offers released plant food for good growth and maximum yield. This means you can shake out the recommended amount once, and it feeds the plant for a long time.
This fertilizer comes in an 8-2-10 (nitrogen-phosphate-potash) formulation. Fertilizer formulas all include these three numbers most of the time, and they always indicate the percentage of those nutrients. It is common for citrus tree fertilizers to have more nitrogen and potash/potassium than phosphate because those nutrients get depleted faster
This fertilizer can be used on existing and new in-ground citrus trees, as well as mango and avocado trees. It contains more potassium, iron, magnesium, and sulfur. More of these minerals are required by citrus plants to prevent nutrient deficiency.
A single application of this product can feed your plant up to three months. The continuous release option ensures that you do not burn or overfeed your plant.
It also makes it easier to feed your plant. You measure out the right amount of food and sprinkle it around the tree. You don’t have to mix anything or guess at the right amount of fertilizer.
#2. Southern Ag Citrus Nutrition Spray
The Southern Ag Citrus Nutrition Sprayis available in a 16-ounce bottle. It is designed to prevent the yellowing of the plant leaves. It also corrects yellowing disease if your plants already have it.
It contains five essential nutrients that are well balanced together. That way, your plant gets all the nutrients that it needs to thrive. The essential nutrients include; magnesium, manganese, iron, sulfur, and zinc.
This product is suitable for all types of fruit trees, as well as ornamentals. It is designed to be sprayed on your plants.
A sprayer or watering can should be purchased, and the product must be diluted. About one tablespoon of the product should be used for a gallon of water. It is designed to work on all tropical fruits and citrus fruits.
This product allows you to spray the fertilizer onto the leaves and roots. It might be best to use it on the leaves if they have a deficiency. It can also be sprayed onto the roots to prevent mineral deficiencies.
#3. Espoma CT4 Citrus-tone Food
The Espoma CT4 Citrus-tone Food is designed for organic gardening and available in a four-pound bag. All the ingredients contained in it are natural. It contains thousands of microbes, which help in keeping the plant healthy.
It is formulated for all citrus trees, as well as nut and fruit trees. It offers continuous, long-lasting feed time with maximum utilization. It ensures that your plants are balanced and fed.
The fertilizer aids the whole tree develops and grows correctly. When the fruit comes in, it is going to taste more flavorful and be larger, as well. It comes in a 5-2-6 formulation. Therefore, you may need to feed your tree more often for the best results.
The fertilizer itself can be used indoors or outside. Because of its pungent smell, most people would not want it on indoor plants.
Please note that the instructions on the bag are for outside trees. The same directions shouldn’t be used for indoor plants because the plant will end up becoming over-fertilized. Instead of using one cup of the mixture, 1/4-cup of the fertilizer can be used to obtain the best results.
#4. Down To Earth Organic Fertilizer for citrus fruits
The Down To Earth Organic Fertilizer for citrus fruits is available in a 1- or 5-pound box. It is a natural fertilizer and uses a 6-3-3 formula. The Down To Earth Organic Fertilizer is listed by the OMRI to be used for organic gardens. This fertilizer is packed with many necessary plant nutrients such as sulfur, calcium, iron, and zinc. It also contains selected micronutrients that the citrus tree needs.
This citrus plant food provides the right amount of phosphorus and nitrogen, though it runs a little low on potassium. Still, this fertilizer helps to promote new growth, greener foliage, more fruit, and fragrant blossoms.
The fertilizer works well on all citrus trees. However, it can also be used on other fruit trees and ornamental plants with good results. This fertilizer mix should be applied up to four times each year for established trees. New trees may need more applications. This product does not need to be mixed with water.