Feed them after they bloom in spring. It is made from Ammonium Sulfate, Triple Super Phosphate, Muriate of Potash, Zinc Oxy-Sulfate, Maganese Sulfate, Iron-Oxy Sulfate, Copper Sulfate, Dolomite, Blood Meal, and Cottonseed Meal. Apply at the rate of 1/4 cup for each foot of height. Always wash completely with insecticidal soap and water after use. The right time to fertilize Gardenias for the best result must be done every 2-4 weeks during the growing season. During these months you have to fertilize the plant. It would give good results applying fertilizer that is made from organic matter. Gardenia plants (Gardenia augusta/Gardenia jasminoides) will get a great benefit from fertilizer application. The Gardenia pant also will appreciate coffee grounds, tea bags, wood ashes, or Epsom salts mixed into the soil. When growing in pots Gardenias appreciate a moist but well-drained soil. Repot your gardenia plant every 2-3 years in late winter or early spring. To care is to just prune to remove dead limbs and maintain shape. If you plant gardenias in a tub or box, use a large container as gardenias do not like their roots crowded. Whether you grow them as houseplants or outdoor garden. Relocate the pot in bright but indirect light. You can schedule a monthly basis of fertilizing from May through September or feed 3 to 4 months as needed. Even though it is for acid-loving plants, it can work well in all soil types. bestgardenoutdoor.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. For best results, maintain the temperature at about 75 Fahrenheit (24 Celcius). October 13, 2020 by Henry Kaswandi, SS, M.Kom. Jobe’s Azalea, Camellia & Rhododendron Fertilizer Spikes, 10 Spikes (jobes organic), 5. Acidic soil is at a pH of 5.5 to 6 levels. To supply food for the Gardenias plants just twice per year, fertilize one time in early spring during new growth. Wait until the water drains through, then fill the remainder with soil and again pat or tamp down to eliminate air pockets. It will supply continuously nutrients for Gardenias plant below the surface, where the active roots are growing. This is also a good time to prune any leggy growth. To prevent over-fertilizing, people stop fertilizing the gardenia plants. When the Gardenia plant at its mature stage, it is drought tolerant. As an Amazon Associate we earn from qualifying purchases. It is the long-lasting, slow-release and original choice for gardeners with Amaryllis, Andromeda, Aster, Azalea, Bayberry, Bleeding, Heart, Blueberry, Camellia, Dogwood, Evergreens, Ferns, Fir, Gardenia, Heath, Heather, Hemlock, Holly, Huckleberry, Hydrangea, Inkberry, Juniper, Leucothoe, Lily-of-the-Valley, Lupine, Magnolia, Marigold, Mountain Ash, Mountain Laurel, Oak, Pachysandra, Phlox, Pieris, Pine, Raspberry, Rhododendron, Spruce, Strawberries, Wood-sorrel, and other acid-loving plants. I try to write a comprehensive article for good information and guide. This fertilizer is a slow-release 14-4-5 type that can be used on shrubs, trees and flowers. The fertilizer works for any acidic soil loving plants and the plant would love them especially when it blooms. It will also promote the plant to bloom more often. Gardenia plant. This water-soluble fertilizer is a good choice for greening up plants including Azaleas, Gardenias, Camellias, Rhododendrons, Hydrangeas, Blueberries, Magnolia, Yellow Pine, Pin Oaks, Spruce, Cedar, Birch, and Citrus. But you must remember not to use it in a vegetable garden. When applying fertilizer, water the plant lightly first; applying fertilizer to a dry plant may harm the roots. It would be very nice to plant gardenias in your garden and can be a garden solution. Add water, and tamp it down in to eliminate air pockets. It is recommended for all the plants that love acid like… To improve the Gardenia soil, you can add compost or aged manure. It is specially formulated only for gardenia to bloom. Deep soak the soil in the rootball, to a depth the same as the height of the root ball. This will also reduce the need for weeding and keep the soil at a constant temperature. Potted gardenias will grow in any zone, but must be brought indoors when temperatures fall below 60 degrees F. They need five to six hours of sunlight every day, so if you bring the plants indoors for the winter, set them in a south- or east-facing window that will get morning sunlight. By doing this, it will encourage new growth. Gardenias must be fertilized using a water-soluble fertilizer for acid-loving plants. To correct the soil pH, once a month water the gardenia with 1 tablespoon of white vinegar mixed into 1 gallon of water. If there is no rainfall presence, water only as needed. Active Ingredient: Total Nitrogen – 9% Available Phosphate – 15% Soluble Potash – 13% Boron – 0.02%, Copper – 0.05%, Iron – 0.10%, Manganese – 0.05%, Zinc – 0.05%. You can apply this fertilizer late spring or early summer after Gardenias plants in pots shed their blooms. With adequate water, sufficient drainage, an acidic soil and plenty of sunlight, gardenias can grow just as well in pots as they do planted in the ground. A few of the varieties are hardy to zone 7 (such as Kleim’s Hardy Gardenia is one). If you see the Gardenia flower stop blooming, it is also a good idea to prune some older stems. Otherwise, rainwater provides the perfect acidity. If you want to use organic fertilizer, spray Gardenia plants every couple weeks with a mix of 1 cup compost tea, 1-ounce molasses, 1-ounce White Vinegar, and 1-ounce liquid seaweed combined with 1 gallon of water. You can start providing your Gardenias in pots a balanced diet of macro and micronutrients immediately. You don't have to be a master gardener to make a homemade fertilizer for gardenia plants (Gardenia jasminoides, U.S. Department of Agriculture plant hardiness zones 8 through 11), and you probably already have most of the supplies.Although gardenias can be a garden's problem child and are heavy feeders, they are long-time staples in Southern gardens. An inch of rain should shower Gardenias at least every week. The leaves became a darker green and it went on to produce Gardenia flowers and Gardenia flower development. Coffee grounds are rich in nitrogen, magnesium, and potassium. This is much better than watering the plants every day. This product has an ability to feed your gardenias instantly. Overwintering. It reduces plant shock and promotes greener plants. This evergreen food for organic gardening will make your plants grow to create a wonderful landscape for your yard or lawn or garden. One of Gardenia variety is Gardenia Jasminoides ‘Kleim’s Hardy’ (Cape Jasmine). Ferti-Lome Fertilizer for Azalea, Gardenias, Camellia, Rhododendron Food 9-15-13, 3. You can start applying this fertilizer and read the easy to follow chart. The soil to plant will not be able to give access to roots for enough nutrients if it does not have the right pH balance, This fertilizer is specifically formulated for those acid-loving plant including use on Gardenias, Evergreens, Blueberries, Azaleas, Rhododendrons, Camellias, Hydrangeas, Raspberries, Strawberries, and Potatoes. Dip the end of the cutting into a rooting hormone. Between the month of April through November, that would be the right time for growing Gardenias in pots. You do not have to mix or measure to use. Various acid fertilizers lower soil pH to free up nutrients. Make sure to place the top part of the root ball a little above the soil’s surface. It is also very easy to use. JR Peter’s Jacks Prof 21-7-7 Gardenia Fertilizer for Acid Loving Plants, 25 pounds. This fertilizer is water-soluble for acid-loving plant food. That would be between March to October. The cause of the infection can result in gardenia shrub’s downfall and death untreated or no care for your gardenia. They are beautiful evergreen shrubs that have dark green leaves. Gardenias are an indoor plant, grown for their attractive foliage and highly scented showy flowers. She is also a professional mosaic artist. Constantly soggy soil can and often will cause root rot or other harmful or deadly plant diseases. About | Privacy | Terms | Disclaimer | Amazon Affiliate Disclosure. How Gardenia plants will grow, depends on what part of the country you live in. Make sure the tool is clean and sterilize. Then, you fill the hole with soil half-way. Gardenias and other plants that thrive in acidic soil, such as evergreens, holly, blueberries, raspberries, strawberries, dogwoods, azaleas, rhododendrons, camellias, hydrangeas, gardenias, and magnolias, will grow well. This fertilizer contains 4 pounds of Aluminum Sulfate. When you see that it is dry, then your plant will need a good soaking. When the plant is matured or established, they are tolerant of dry periods. It would better the one that contains Sulfur and/or Iron. Since gardenias are evergreens, they will continue to grow all year if protected from frost, but they should be given a rest from fertilization during winter months.