It looks very green and healthy. Leaf drop can also be caused by improper soil pH (gardenia require 5 to 5.5pH - on the acid side.) If they are allowed to dry out too much, they will respond by dropping their buds. Flower buds will fail to form if the ideal temperature for Gardenias is not respected! Keeping as much of the root mass as possible intact, dig up the shrub with its roots, and plant the gardenia in its new location at the same depth at which it grew in its old location. In addition to non-blooming buds and dropping of buds on gardenia bushes, other problems may be seen, such as the yellowing or dropping of leaves. Be sure to check which variety you have before you prune. Finally, if the air is too dry, your plant will drop buds and leaves. Not enough humidity is oftentimes the reason for this; therefore, you should increase the humidity levels in the home using a humidifier or placing a tray of pebbles with water beneath the pot. The Flower Buds on My Magnolia Tree Aren't Opening Up. Why? Indoors, a gardenia can grow in a 2- to 5-gallon container in a brightly lit room. Gardenia plants lose water through the leaves in hot, dry conditions and the buds and leaves will suffer. Proper care of gardenia flowers will help prevent gardenia buds from falling off. Flower balling is a disorder in which flower buds develop normally but do not open. Links. Issues with gardenia buds falling off plant is a common problem that many gardeners experience when growing this plant. I'm new to having this plant and and need help on it's care. Buds falling or failing to open and going brown: Gardenias tend to keep producing flower buds right through autumn even though their growth is slowing. Insect problems – Your gardenia may have a insect called, thrips. Weather Conditions Dry, hot weather conditions will cause the buds to turn black and drop from the gardenia. Flower buds on affected branches may drop without opening. Exposure to extreme temperatures, especially cold, can lead to all of these problems. It is loaded with buds. What would cause the buds on my Gardenia to turn brown before they even open. It gets plenty of light and water and occasionally fertilizer. How can I help my gardenia bloom? They will not open up - like a rose does. The buds on my peach trees have all turned black and are falling off, Any advise would be helpful. Check to see if the plant is too wet. Improper watering habits can also cause gardenia buds to fall off the plant. This insect can be found in the bud itself. Nikki Certified GKH Gardening Expert. Try to keep gardenia flower plants in one location, moving as little as possible. Gardenia Bush Buds Will Not Open Up. asked Apr 29, 2014 by Jeff Seedling (120 points) | 172 views. Is This Some Sort of Disease? Improper watering due to overwatering can also cause problems. Gardenias like to be kept moist. If a gardenia is not blooming, several issues may be involved, including insect damage, frost damage, or poor growing conditions such as the wrong pH or a lack of sun. If you live in a cool region, then an option is to grow your gardenia indoors to prevent frost damage. I have a problem with my gardenia. The brown starts at the base of the bud, and even turns the outside petals brown too. Gardenia leaves turning yellow is a huge concern for people and often times they don’t know exactly what’s causing the issue. Q.--This Fall, I've Found Some Funny-Looking Bumps on My Magnolia Trees. They are extremely sensitive to being moved or even touched. What can I do to make the buds open? But the fragrant flowers are delightful, so buy a new plant every year and grow it as an annual. The plants require high humidity and lots of water. Extreme temperature changes — either too high or too low – also cause buds to fall. I've had gardenia plants in the past, but I've never had any flowers- the buds fall off, and eventually I just give up on the plant. My gardenia buds won't open on their own. Fruits and Vegetables. In fall, a gardenia can be transplanted to a sunnier spot. Donna, It may have thrips. A. Causes can include low humidity, overwatering, underwatering, insufficient light and high temperatures. What's causing my hibiscus buds to drop off before opening? They also need an acidic soil between pH 4.5 and 5.5. How to get buds to mature faster! Gardenias like to be kept moist. Improper pruning – When a gardenia plant is not blooming, the reason is often pruning too late in the season. In the world of gardenia lovers, few experiences cause more disappointment than discovering the plump, green buds dropping to the ground around your gardenia plant without blooming. Overall stunting of the plant is common. Camillus, NY. Buds that turn black or drop and bottom leaves that are yellowed are sure signs that gardenias aren't getting enough light. Cut one of the buds open and see if there are any insects crawling around inside the bud. They fall off before opening. If they are allowed to dry out too much, they will respond by dropping their buds. Gardenias need nighttime temperatures of 60 to 62 degrees Fahrenheit and daytime temperatures of 70 to 75 F for optimal flowering. Help answer a question about Why Are The Buds On My Blie Delphinium Not Opening? Gardenia flowers also thrive in humid conditions; therefore, the use of humidifiers or pebble trays is important, especially during winter. Check the soil, hibiscus like moist well-drained soil but not wet soil. If you overwater your gardenia plant, you might end up with brown buds that fall off the plant. I see… Q. Gardenia - Why does my Gardenia bush have a black looking color to the leaves? I even pulled a bulb off, and it was mushy right at the base, like rot. My Gardenia's Leaves Are Turning Yellow & the Buds Are Falling Off. Hi Carol-There are a couple of things that can cause the buds to drop, dry up, or not develop. Appearance. Gardenia buds not opening / yellow leaves falling. Prevent stem canker in your gardenia by avoiding overhead or excessive watering of the plant. This should occur after flowering in summer, but before the plant has time to set new buds. buds falling off; please help; 1 answer. Distilled water is best. Avoid transplanting your gardenias when they’re in bud to decrease plant stress. Although it can be frustrating, you should take heart--experiencing bud drop is typically just an indication that you simply need to give your temperamental gardenias a bit more tender loving care. This can be caused by a variety of things. See attached photos A healthy plant was sent to me (800-FLOWERS) with new growth and buds about three weeks ago. Leaf or bud drop is common when gardenia plants are too dry, either from lack of moisture in the soil or air. Repot A Gardenia Bush I want it to be in the color of a pine and be late to wear out. Even under the best of circumstances, problems with gardenia flower buds happen. I mist religiously, unless a plant (any plant) is … ... Aphids are small, pear-shaped insects which feed on fluids from buds and other plant parts. Answer + 1. Dilute 1 tablespoon of 30-10-10 water-soluble fertilizer in 1 gallon of water for an outdoor gardenia, and use the diluted solution to water the plant once every one to two weeks during spring and summer. I left it a while until winter (in Australia) was over, and I've just bought another one... but more established with flower buds etc. Sissy, in most cases, Gardenia flowers brown from change of environment...from gh to home. Sometimes, when gardenia buds won’t bloom or fall off, it is due to improper care. Take a fallen bud … What causes gardenia buds to turn brown and not bloom? If the buds are aborting before being fully formed then low humidity might be the problem. Gardenias benefit from a monthly dose of fertilizer and, although not a requirement, gardenias can be pruned for shape after flowering has ceased. A good watering regimen includes irrigating when the top two inches of soil feel dry. What should I do? A commonly seen problem is gardenia buds falling off plants. Question From: Bloomfield Hills, Michigan, United States . There are a number of possible reasons why magnolia buds fail to open in spring. My girls are in soil and then only using a monsta bud durning flowering but I'm heading to my local hydro shop today to upgrade my nutrients, but I'm needing to know what to give them Any help would be awesome BLAZE TO . Wisteria Buds On Wisteria Not Opening: Why Wisteria Blooms Don't Open. A while ago I bought a gardenia - and put it in a pot. Bud drop is caused by a number of issues, including inadequate light, low humidity, insect damage and overwatering. Answers to this queston: Add Answer. Jamie Jamison Adams says: June 30, 2014 at 8:47 am. I have it in an east window, and the panels on the balcony provide a little shade so it shouldn't get sunburned. Also, use distilled water whenever possible, as gardenias are sensitive to large amounts of lime found in regular tap water. Pruning too late in the season will remove buds in the process of developing for the … Not sure if that just happens outdoors with sun or if it would happen indoors too (I've never grown them indoors). I have been looking at the bud spikes for close to 2 months. Why? Why do the buds drop even when the plant looks o.k.? IF you have thrips you will need to treat it with an insecticide specifically for thrips. Why Are My Orchid Blooms Not Opening? If plant keeps putting out new white hairs over and over, check the trichomes on the sides of the buds where the older growth is, instead of looking only at younger growth. My hibiscus in in a large clay pot. The buds can also drop as a result of being damaged by weevils or leaf hoppers. Some open prematurly almost a yellowish color and not white. They will often hold these buds right through winter and drop them in spring. It is now the first week in July. Keep gardening tools and chemicals away from children and pets. Two of those reasons have to do with weather. Bud drop, a condition in which flower buds fall off before opening, is a common problem with gardenias. Question by pmackind July 5, 2006. 15 years ago. Dislodge tiny, wingless aphids from your gardenia by using a forceful stream of water from a garden hose, or remove the bugs by hand. Answered. Make sure gardenia plants are kept away from drafts. Insufficient watering, as well as overly dry air, causes the buds to rot. Gardenias need daytime temperatures above 10–15°C to start flowering, which is why many of the flower buds that form in warm autumn weather succumb to colder winter temperatures and drop off. Water every day (as needed) and at the same time of day if possible. A. It is possible that you have thrips. Sign up to get all the latest gardening tips! Now we will get into the issue of why your hibiscus buds are not opening, and may eventually fall off of the plant all together before even sprouting a flower. There are a variety of reasons why buds fall off of a gardenia plant, but the most common cause is a change in location. While gardenia flower plants will tolerate a range of temperatures, they prefer cool nights, between 60-65 F. (16-18 C.), and warmer days, about ten degrees higher. I live in zone 5 and purchased one of your Tango Twirl Mandevilla plants the third week in May. I just purchased it this Spring. Just when I think they should be opening they seem to dry up and will not open. These are crepe gardenias, a tree gardenia and a regular gardenia plant: Answer from NGA April 1, 2001. Inadequate or excessive moisture can cause gardenia buds to drop before they open. But what is the cause? Prune gardenia plants after flowering in summer, but before the plant has time to set new buds. When cared improperly, Gardenias lose their buds, their leaves are turning yellow and brown, then dry and fell off. G. jasminoides) a popular addition in or around the home, these stunning beauties are not the easiest plants to grow. I have it on my west facing garden window set in a bowl of wet stones but the plant's pot is elevated above the water level. Leaf drop can also be caused by improper soil pH (gardenia require 5 to 5.5pH - on the acid side.) Stem canker is a fungus disease that causes sunken stem lesions and bud drop in gardenias. One of the biggest problems for gardenias are the pests that plague them. Inadequate or excessive moisture can cause gardenia buds to drop before they open. Thank you. Bud drop : If your Gardenia's flower buds fall off just before they open, this may be caused by pest infestation (aphids, nematodes), excessive fertilization, over-watering, under-watering, poor soil drainage, insufficient light, unusually cool weather, rapid drops in temperature or very hot, dry weather. These are crepe gardenias, a tree gardenia and a regular gardenia plant: Answer from NGA April 1, 2001. Gardenias do not like to be disturbed. You've pinpointed the most difficult part of growing gardenias: getting those buds to open. Be sure to check which variety you have before you prune. 0. Why do buds drop off gardenia plant? If your gardenia does not bloom properly, then the temperature may be too warm or too cool. They feel crusty and must be helped to open. Poor light conditions are another possible reason. To correct this problem: Why Are My Gardenia Bonsai Tree Stems Turning Brown? Aphids, for example, suck juices from leaves and stems and can cause gardenia buds to drop before they bloom. My gardenia tree has its buds fall off before they open. Bud Drop: When a gardenia is stressed, unopened flower buds may drop from the plant. Extreme temperature changes — either too high or too low – also cause buds to fall. Kim_MO. Some gardenia varieties actually bloom twice during the growing season. Dragon Fruit My Pitaya Won’t Bloom: Why Flowers Won’t Form On Pitaya Plants. buds falling off; not blooming; 1 answer. Ignore trichomes on leaves because it’s the buds you want to harvest on time! Even under the best of circumstances, problems with gardenia flower buds happen. Infected stems should be pruned out, taking care to disinfect pruners in a 10% bleach solution (1 part bleach to 9 parts water) or 70% alcohol solution between cuts. Keep the soil evenly moist and increase humidity levels. QI have had a gardenia in my garden for a number of years. Artificial light during winter may prevent an indoor gardenia from producing flower buds. ... Buds falling or failing to open and going brown: Gardenias tend to keep producing flower buds right through autumn even though their growth is slowing. Q: I have a large gardenia bush in a pot on my deck. Improper watering habits can also cause gardenia buds to fall off the plant. RHS Find a Plant Dropping of buds on gardenia bushes can also be due to improper watering. They feel crusty and must be helped to open. When transplanting, handle the root ball carefully to avoid damaging the roots. Dry, cracking soil can also damage roots. Growing gardenia flowers doesn’t have to be a chore. Gardenia Pests. However, it buds that look like they are just about to bloom and then they fall off before they have a chance to open fully. Charlotte Gerber (author) from upstate New York on March 28, 2011: Hi Simon, I'm sorry for the delay in responding - perhaps you've remedied the situation by now. asked Jun 1, 2013 by anonymous | 228 views. They will often hold these buds right through winter and drop them in spring. Potential stressors include infestations of thrips or aphids, root feeding by nematodes, too much fertilizer, over-watering, under-watering, poor soil drainage, insufficient light, unusually cool weather, rapid drops in temperature or very hot, dry weather. ... 3 answers. If you cut open a flower bud and find brown inside it, then frost damage may be the reason for bloom problems. There are a few different possibilities when it comes to why these dark green leaves are suddenly turning yellow and it’s vital you figure out the issue quickly. It looks so green and healthy and has several buds. Powdery mildew can also affect the leaves and buds. Hard Blooms That Won't Open. Gardenia flower discoloration can be a result of giving your plants a little too much love. Answered on March 20, 2014. Pruning old growth after flowering also promotes new growth and increased blooms. Buds keep falling off my gardenia plant, it is healthy It is ona table in the window, i am stymied. © Copyright 2020 Hearst Communications, Inc. When the conditions are hot and dry, the gardenia cannot absorb water as quickly as needed to keep the plant healthy. Why? Gardenias prefer soil that is uniformly moist. Insufficient watering, as well as overly dry air, causes the buds to rot. If they are allowed to dry out too much, they will respond by dropping their buds. 3) Overly dry air, causes the buds to die and abort. Probably the most common reason is a change in location. The plants have 3- to 5-inch, dark, glossy leaves and waxy white flowers. Let’s look at some of the issues that can cause this. You can pick one of its varieties to your liking from large Gardenia Magnifica, reaching almost 2 m high, when grown in good conditions, to cute petite forms or Bonsai Gardenia. Some of the larger buds have been like that for about 2 weeks. Improper pruning – When a gardenia plant is not blooming, the reason is often pruning too late in the season. What causes gardenia buds to turn brown and not bloom? I have a large gardenia in a 10 gallon plastic container loaded with buds. Gardenias do not set flower buds when temperatures are above 65 degrees at night and drop buds that have already formed, according to the Encyclopedia of Houseplants. Another reason why buds sometimes drop off is due to lack of moisture. This is fairly normal. Watering the right amount can prevent this from happening and can keep the flowers looking their best. SERIES 20 | Episode 18 'Bud balling' is a syndrome where buds form but do not flower. I gave the plant a week to acclimate, leaving it on my back porch, before planting it in my garden. Plants which are not sufficiently hardened off or are exposed to unseasonal warm spells can start bloom prematurely. Water fluctuations (too much or too little) can cause bud drop and we have certainly seen plenty of rain. Some gardenia varieties actually bloom twice during the growing season. asked Sep 24, 2013 by Dianne Cirmo | 192 views. To avoid this problem, maintain an evenly moist soil, but avoid overwatering, as gardenias do not like wet feet. What am I doing wrong? This is usually from either too little humidity or water that is too alkaline. Gardenias encounter “bud drop” where flower buds drop off just before they open. - Gardening Know How Questions & Answers. It has always been beautiful but, this year the buds are not opening? ... Any of these factors can trigger bud drop or buds aborting before opening. The major pests include: Aphids - One of the most common pests in the garden on all types of plants. First grow from seed Both strands autoflower AK Passion and White Widow Finished and was nothing flash Second grow … Perennials. It's a new tree that had opened . buds falling off; please help ; 2 answers. If they are flower buds, the problem could be bud blast. We have lots of buds but no blooms. It is in a large pot. Other plants for company and humidity are nearby. Root injury is a common cause of bud drop in gardenias. Sign up for our newsletter. ... Hello ,there are areas in my house that I want to change. Caring for Gardenias Indoors Place your gardenia in an area where it will receive half a day of direct … To prevent gardenias from losing their buds, the plants should be left alone in one spot. - Knowledgebase Question. The buds can also drop as a result of being damaged by weevils or leaf hoppers. A jacaranda or poinciana tree is good for protecting gardenias from intense sun. Gardenia blooms are sensitive to getting sprayed with anything, including water. Dropping of buds on gardenia bushes can also be due to improper watering. My buds are full but I'm wanting to nugget them up. Excessive fertilization : Fertilize Gardenias every 2-4 weeks during their growing season (March to October) with a dilute fertilizer for acid-loving plants. If your Gardenia does not bloom, this may be caused by any of these reasons: Improper pruning: Prune your Gardenia plant when it is dormant, to promote branching and compact growth. Monitor the humidity level in the air around your gardenias. Use a peat-based potting soil, if possible. This is fairly normal. Do not fertilize from November to February. You've pinpointed the most difficult part of growing gardenias: getting those buds to open. What is the problem. Gardenias are very sensitive to disturbances and don't do well when they are transplanted or even touched. Hardy in U.S. Department of Agriculture plant hardiness zones 8 through 12, according to the Missouri Botanical Garden, gardenias thrive in full sun to partial shade and moist, rich, well-drained soil. Gardenias benefit from a monthly dose of fertilizer, Gardenia Care To Get A Gardenia Bush To Bloom, Different Gardenia Types: Varieties Of Gardenia Commonly Grown, Boxwood Wreath Ideas: Tips For Making Boxwood Wreaths, Best Holiday Herbs – Grow A Christmas Herb Garden, Madonna Lily Flower: How To Care For Madonna Lily Bulbs, Tips On Hollyhocks: Growing Hollyhocks Successfully, How To Tell The Difference Between A Male And Female Holly Bush, Growing Grape Hyacinth Indoors – Forcing Grape Hyacinth Over Winter, Fresh-Cut Pine Tree Smell: Perfect Christmas Tree Memories, Norfolk Island Pine - The Perfect Christmas Tree, Winter Survival Guide: Creative Ways To Garden In Winter, Evergreen Favorite: Container Grown Olive Trees. Insects such as Brooks mentioned along with aphids and leaf hoppers can damage flower buds. Plants will grow 2 to 8 feet tall with a spread of up to 8 feet. Gardenia flowers require lots of light; however, you should avoid direct sunlight. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Nighttime temperatures in the range of 50 to 55 degrees are necessary for proper bud formation. During periods of water stress, a plant will drop many flower buds before opening, diverting limited water to roots instead of blooms. What should… Q. Gardenia - I live in Texas and over the winter my gardenia's leaves all turned brown due to a frost. Probably the most common reason for gardenia buds falling off plants is a change in location. Seasonal changes can also inhibit blooms, as gardenia flowers come in and out of bloom with the seasons. One of the most frustrating problems a gardenia lover can encounter is having a plant with plenty of buds, but they are hard, won't open, and may even turn yellow. These can be treated by spraying plants with a soap solution (one tsp of liquid soap to … Height and width 1-1.5m (3¼-5ft) G. jasminoides 'Kleim's Hardy': Said to be hardy enough to grow outdoors, although this is not universally accepted. Prune infected stems and branches, and disinfect pruning tools between cuts in a solution that is 10-percent bleach and 90 percent water. I provide a few of those reasons in this FAQ. The plants require high humidity and lots of water. Alternatively, dilute 1/2 teaspoon of 30-10-10 water-soluble fertilizer in 1 gallon of water for an indoor gardenia, and water the plant with the diluted solution once every two weeks during spring and summer. Why wont the buds open on my gardenia tree? Check the trichomes only on buds, not any of the leaves including the small sugar leaves. Beside this, why are my gardenia buds not blooming? Overwatering can cause buds to brown and drop..spider mites cause damage, destroying flowers AND foliage. Also the leaves at the bottom are yellowing and falling off. Provide the best optimal care and these magnificent plants will reward you with beautiful fragrant blooms. To avoid this problem, maintain an evenly moist soil, but avoid overwatering, as gardenias do not like wet feet. If you’re wondering, hibiscus do not produce blooms like other flowers. Make sure there is no sign of insect damage such as holes in leaves, yellowing or curling of leaves. I've transferred it into one of my pots (different to the pot I used before) and only two days later, some of the leaves are going yellow. Q. Gardenia Buds Won't Open - My gardenia buds won't open on their own. Instead, they have buds, which will fall off of the plant before they open and spring forth a flower. The leaves went yellow and it turned to twigs. My Gardenia Is Not Blooming By Judith Evans Temperature and moisture variations can interfere with gardenia bud development. Cool, wet weather saturates the outer petals and then the sunshine dries and fuses them into a tight, papery shell, preventing the bud from opening. The plants produce buds but no blooms. Question of the Week: “Ryan, I have a very large Oncidium that is covered with bud spikes, at least 30. These plants also prefer to be kept moist, not wet, but do require slightly drier conditions during non-flowering intervals. Gardenia Gardenia Care To Get A Gardenia Bush To Bloom. During periods of water stress, a plant will drop many flower buds before opening, diverting limited water to roots instead of blooms. How come? These blooms are seldom satisfactory and many times get frozen before opening fully. My Gardenia Buds Are Turning Black By Pamela Gardapee A healthy gardenia with white flowers Gardenias are perennials grown as garden or house plants. Use well-drained soil, and allow the top inch of the root ball to remain above the soil. In the world of gardenia lovers, few experiences cause more disappointment than discovering the plump, green buds dropping to the ground around your gardenia plant without blooming. Hard Blooms That Won't Open. The number of hours of light and darkness the gardenia receives can affect its blooming. Some of the larger buds have been like that for about 2 weeks. After the last average frost date in your area, prune away damaged twigs on your gardenia. I do not like the color of the parquets. One of the most frustrating problems a gardenia lover can encounter is having a plant with plenty of buds, but they are hard, won't open, and may even turn yellow. high humidity at night can cause bud fall, also insects that deposit their eggs in the buds, the presence of fungus too, another is if the plants are overwatered or water logging is present, or the soil is too dry, the soil must be moist but not wet, also if the soil is not acidic, plus there are gardenia species that have bud fall characteristic. Gardenia fertilizer should be one designed for acid-loving plants, which will promote continuous gardenia blooms, according to the University of Hawaii Cooperative Extension. Gardenias like to be kept moist. Bud drop, a condition in which flower buds fall off before opening, is a common problem with gardenias. Q: I have a large gardenia bush in a pot on my deck. Known for their fragrant white flowers and glossy green leaves, gardenias (Gardenia … Gardenia jasminoides AGM: large evergreen shrub with deep glossy green, elliptic leaves and very fragrant, broadly funnel-shaped white flowers 8cm across in summer and autumn. Control: The most important aspect of controlling this disease is to prevent injury to the gardenia. A good watering regimen includes irrigating when the top two inches of soil feel dry. Common name: Gardenia, Florist’s Gardenia. Typically the buds develop almost to the point of opening, then stop developing, go brown, and drop off. 0. Once again, increasing humidity levels can help. I just purchased it this Spring. For instance, one common problem is when gardenia buds won’t bloom. Bud mites cause the tips of the buds to turn brown, and the buds fall off before they bloom. Especially when first bought. Gardenias are not only extremely beautiful but also very versatile shrubs. That can cause browning too. Pests and other problems can interfere with gardenia flowering, too. Wisteria Buds On Wisteria Not Opening: Why Wisteria Blooms Don't Open. It looks very green and healthy. For instance, one common problem is when gardenia buds wont bloom. Gardenias are very sensitive to disturbances and don't do well when they are transplanted or even touched. asked Jun 12, 2013 by anonymous | 738 views. It is healthy looking. Dragon Fruit My Pitaya Won’t Bloom: Why Flowers Won’t Form On Pitaya Plants. Often gardeners have issues with gardenia buds falling off plant or when gardenia buds won’t bloom. There a few things that cause bud drop in gardenias: an insect problem, low humidity, root damage and rapid temperature change. Yellowing and leaf drop are also signs of various soil nutrient deficiencies such as nitrogen, zinc, and iron. Rose of Sharon has many buds but they don't open up, just fall off!? We have lots of buds but no blooms. When grown from seed, the 4- to 8-foot-tall shrub begins to bloom in its second or third year, but poor growing conditions and other problems may prevent flowering or prevent flowers from opening. Keep the soil evenly moist and increase humidity levels. Missouri Botanical Garden: Gardena Thunbergia, University of Hawaii Cooperative Extension Service: Common Gardenia, How to Keep a Potted Gardenia Indoors for the Winter. Water the plant's soil when the top 1 inch of the soil feels dry to the touch; keep the soil evenly moist, and spread a 3-inch-thick layer of mulch on the soil to retain moisture. Not enough humidity is oftentimes … While their fragrant creamy-white flowers, tucked amid glossy evergreen foliage, make gardenia plants (Gardenia augusta syn.