They can handle a low temperature of about -20.6 to -17.8C (-5 to 0F) but under in a well-protected and sheltered setting. The more sunlight your gardenias receive, the better off they will be in the long run. Let it sit for three days; then remove the nutrient bag and apply the tea directly to the soil. Light. If you are just getting a cold sore, try, Now, cold air is denser than warm air, so in cold weather the number oxygen molecules entering the combustion chamber per unit volume of air is significantly greater than when the temperature is high. of soil dries. Feed gardenias every three weeks during the growing season with an acid-based fertilizer. They experience some shock when they are moved into the greenhouse for the winter, a bit of yellowing and leaf drop for a short time. Deadheading like this will also promote the stems to branch out, creating a, Cold showers might not be a good idea if you're already cold, since the cooler temperature isn't going to help warm you up by any means. When it comes to watering, gardenias require moist, but not soggy soil. On a general note, all types of gardenias are best grown in high humidity levels. For colder areas, however, these should be brought inside (see care below). The temperature to keep in mind are 15 o F to keep them alive and 60 o F is needed for Gardenia plants to bloom. This creates a protective cocoon over the tender tissue. Transplanting Overview, It's important to know how wide and deep a gardenia's root system is before moving, transplanting, or planting it. Skin can handle higher temperatures for a few seconds before pain or skin damage occurs. Since they are rich in nitrogen, magnesium, and potassium, coffee grounds are oftentimes a more favorable homemade gardenia fertilizer. A MUST know for anyone who invests in orchids. Cold water draws body heat If a person is in a cold lake of 4 C, then a person can survive for a maximum of 30 minutes. The Alluring Power of Honeysuckles: How They Attract Bees. Watering and Mulching. Wind chill is particularly dangerous for gardenias, as it can cause the leaves to freeze, leading to significant damage. Gardenias perform best when they receive intense morning light and shade from the hot afternoon sun. The gardenia doesn't care for cold temperatures. Gardenias grow outdoors in U.S. Department of Agriculture plant hardiness zones 8 to 11. Fertilize your gardenia every other month with a balanced fertilizer. If your plant suffers from this case, keep in mind that Gardenia is essentially a sun-loving southern plant. Plant gardenia in soil that is high in acidity (around 6.0-7.0 in pH) and also has very good drainage. Well-drained, acidic soil with a pH of 4.5 to 5.5 is ideal for gardenias, whether potted or in the ground. How to Get Rid of Mushrooms in the Yard the Easy Way. Your heart then has to work. (This rule is independent of pipe size.) Gardeners should also take into account other environmental factors, such as wind chill. Gardenia prefers warm temperatures of 65-70F (18-21C) during the day and 55-60F (13-16C) at night. This will . As the University of Missouri Extension describes, although they can tolerate occasional, mild freezes (temperatures around 28 to 32 degrees Fahrenheit), gardenias prefer warmth temperatures around 60 degrees Fahrenheit at night and 70 to 75 degrees Fahrenheit during the day. Gardenia plants prefer cooler temperatures, around 65 to 70 during the day. . . As the University of Missouri Extension describes, although they can tolerate occasional, mild freezes (temperatures around 28 to 32 degrees Fahrenheit), gardenias prefer warmth temperatures around 60 degrees Fahrenheit at night and 70 to 75 degrees Fahrenheit during the day. Gardenia can handle temperatures as low as 45F (7C). Can you get a heart attack from jumping in cold water? Sign up to get all the latest gardening tips! It could be because they do not have enough water or sunlight. Use only clean pruning shears and do not cut all of the leaves off of the plant. If you live in a cold climate, you can grow gardenias indoors during the winter months. Monitor Temperature: It is important to monitor temperature levels when growing gardenias. There is no agreed-upon value, among physicists, for a maximum possible temperature. These Southern flowers are full sun hardy, which means they can handle and even thrive in direct sunlight. However, to ensure the health of your gardenia, it is important to keep the temperatures within an acceptable range. So let me know what you think. They are meant for warm climates and sustain substantial damage when exposed to temperatures below 15 degrees F. (-9 C.). To prevent this, it is important to provide shade to your gardenia during the hot summer days. Iron Chlorosis: Gardenias are acid-loving plants that grow best in soil with a pH of 5.0 to 6.0. The ones that are hardy down to Zone 7 can survive in temperatures as low as 5F, and the varieties that can handle the winter chill in Zone 6 can make it through when the mercury in your outdoor thermometer dips a few . As it gets cooler, I notice a couple more yellow leaves. How do you get rid of old gardenia flowers? Elsewhere, they are grown indoors as houseplants. Gardeners should also consider planting their gardenias in an area with protection from wind, as wind can cause cold temperatures to drop even further. Ecma International, a body responsible for creating standards for Information and Communication Technology and Consumer Electronics, has set some ergonomic limitations for skin contact time and temperature. It will maintain a constant temperature. Gardenias in exposed locations in full sun benefit from having their leaves sprinkled as the water freezes. Grown indoors, the gardenia needs well-drained, acidic soil and adequate humidity. They have cold hardiness USDA zone of 10-12. When temperatures dip below freezing, wind chill can reduce the temperature even further, making it more difficult for gardenias to survive. Get rid of bugs on your indoor plants and make sure they stay gone with these easy solutions. However, if temperatures dip below this, the plant can start to suffer from cold damage. The Standard ECMA-287 has a table the breaks down . The critical temperature for which to watch is 45 degrees Fahrenheit. With the right care and attention, gardeners can enjoy the beauty and fragrance of gardenias for many years to come. Other common causes of insect problems include allowing too much moisture to sit on the leaves and not maintaining the proper temperature and moisture levels. Temperatures that are too cold can have a devastating impact on these lovely plants. You should plant gardenias in protected areas that provide plenty of morning sunlight to warm them on cooler days. Is it safe to take a cold shower in the winter? Generally speaking, gardenias can tolerate temperatures as low as 28F (-2C). Protect From Frost: Gardenias are very sensitive to frost and temperatures below 55F can be damaging. Sun exposure is necessary for proper flower bud development with too little sun plants will produce leggy growth and few flowers. This will help to keep your gardenia healthy and thriving. Snip off dead and wilting flower blossoms throughout the blooming period on both indoor and outdoor potted gardenias. If you get frostbite or hypothermia, this can weaken the immune system, which, Gasoline is less likely to evaporate in colder temperatures, which would have led to carburetors failing to get the right mixture of air and fuel into the engine. Although its rewarding to watch Gardenias blooming not only once but twice annually, be careful because theyre not the easiest to cultivate. Gardenias are often found outside in southern regions. Moist, acid, well-drained soil; morning sun and afternoon shade; good air circulation; and proper fertilization will make them happy. The gardenia plant should also receive cooler nighttime temperatures and warmer daytime temperatures. Yes, some gardenias can withstand frost, and some magnolias cannot do so, but in general, most magnolias are more resistant to low temperatures. The lowest temperature that the human body can record. Understanding the climate and geographic factors that influence the lowest temperature a gardenia can handle is essential for gardeners who want to keep their plants healthy and thriving. Signs that the. Indoor air is dry in winter, so you will have to provide extra humidity for the plant during the winter months. What is the typical low temperature range for gardenias? Gardenias typically cannot survive -9.4C (15 F )or lower temperature. It is awesome. Work fertilizer, peat moss or manure into the soil to enhance the growth of your plant. No, the pot is not really large. You can use pine needles, bark, finely shredded bark or other organic matter. As a side note, my Azaleas have flowers nonstop since winter. A full freezer will keep the temperature for approximately 48 hours (24 hours if it is half full) if the door remains, Getting chilly or wet doesn't cause you to get sick. Apply mulch to a depth of two to four inches to help keep moisture in the soil and control water-hogging weeds. All rights reserved. When finishing concrete in cold weather, you still, With clean, sharp pruners, cut off the entire spent bloom just above a leaf set so you are not leaving odd-looking bare stems. This consists of isolating some plants by constructing a wall separating them from other living things and putting up barriers against entry/exclusion at every possible.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'gardenfine_com-large-leaderboard-2','ezslot_6',170,'0','0'])};__ez_fad_position('div-gpt-ad-gardenfine_com-large-leaderboard-2-0'); How to Overwinter Gardenias in the Ground, Right Location and Adequate Amount of Sunlight is Important, Find A Good Spot to Place Your Potted Gardenia. The 'Frost Proof' variety is a hardy shrub that can reach heights of up to 8 feet and is able to withstand temperatures down to 15 to 20 degrees Fahrenheit. Gardenias prefer moderate to high humidity of at least 50%. As theyre southern plants, they thrive in full sun to get direct exposure. Adding some dormant compost into the pots can help maintain their healthy roots.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[250,250],'gardenfine_com-banner-1','ezslot_5',169,'0','0'])};__ez_fad_position('div-gpt-ad-gardenfine_com-banner-1-0'); For areas with a lot of snow or long periods of freezing temperatures, it is recommended to plant gardenias in pots rather than in the ground. Gardenias need humidity to thrive, so many people mist them regularly with a spray bottle of water. Can putting ice on a cold sore make it worse? Gardenia needs bright, indirect sunlight and should not be exposed to direct sunlight for too long. Put 1 cup of rotted manure or aged compost into a cloth bag. A well-tended gardenia grows compact with deep green leaves and will bloom in early spring or early summer, depending on its location. Gardenias are easy to grow but require a bit of attention. Gardening With Bubble Wrap: DIY Bubble Wrap Garden Ideas, Gardenia Flowers - Gardenia Buds Falling Off Plant, Growing Hostas In Colorado And The Southwest US, Lawn Alternatives Northeast Gardeners Should Try, How To Create A Secret Garden In Your Own Backyard, Planting Forced Paperwhites: Forcing Instructions For Paperwhites, Limp Jade Plant: Help When A Jade Plant Is Drooping, Molasses As Fertilizer: Information On Feeding Plants With Molasses, Old Man Cactus Care Tips For Growing Old Man Cactus Houseplants, Home & Garden Marketplace: Advertiser Info. In exposed locations, it is probable a gardenia in cold weather will have some affected tissue but it may not be obvious until spring when budding and leaves fail to recur on stems. Soils that are high in organic matter and moisture will retain heat better than sandy or clay soils, helping to protect the gardenias from cold weather. How long is Pillsbury cookie dough good for after expiration date. It flourishes in acidic soils with good drainage and thrives on [20-23 C temperatures (68-74 F)] during the day and 15-16 C (60 F . I will try to let it stay out. Finally, consistent watering of at least one inch a week is essential. Based in Indiana, Molly Allman holds a B.A. At . What is the lowest safe temperature for these? Mulch: Mulch will help with moisture retention. In spring, damaged leaves will generally crumble and fall off, but woody tissue will need to be assessed. The Everblooming Gardenia only matures to 4 feet high and can be a wonderful boarder or walkway plant. Use a soil test found at a nearby home improvement center, online, or from your extension service. POLL: Have you completely put away your holiday decor? Gardenias need at least an inch of water a week, whether from rainfall or a hose. The plant is not a cold-hardy type either. These plants are heavy feeders that should be fertilized in the early summer, toward the end of June. When this happens, prune the branches a couple of inches (5 cm.) Noted for its cold hardiness, Gardenia jasminoides Frostproof (Cape Jasmine) is a medium-sized evergreen shrub with thick, lustrous, lance-shaped, dark green leaves and sweetly fragrant, large white double flowers with narrow petals, 2-3 in. Cute & Funny Names for Plants That Plant Parents Will Love. It is hard to resist the shiny, lustrous leaves and starry scented flowers of a gardenia. The Gardenia bush requires acidic soil rich in organic matter and fertilizers. Store your device where the temperature is between -20 and 45 C (-4 to 113 F). These include the 'Snowball' variety and the 'Frost Proof' variety. How long can you leave cold brew in the fridge? If you are looking for a gardenia that is particularly resistant to cold weather, there are a few other varieties to consider. If a gardenia is planted in zones 8-10, it is very rarely exposed to frost. The marginata is easy to grow and can generally handle an additional 10 degrees lower. Gardenia Magnifica - G. Jasminoides 'Magnifica'This Gardenia has a lovely soft bloom and is quite well perfumed. Are there any varieties of gardenia that are more resilient to low temperatures than others? Click here to see all Gardenia varieties . 20 Heat-Tolerant Plants That Will Survive (and Thrive) in the Summer. Semi-hardy plants can handle light frosts and require at least six hours of sunlight. What is the lowest temperature a gardenia can handle? Gardenias do not require prolonged exposure to the sun, as too much sun might cause the flowers to fade more quickly than they otherwise would.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'gardenfine_com-medrectangle-4','ezslot_2',167,'0','0'])};__ez_fad_position('div-gpt-ad-gardenfine_com-medrectangle-4-0'); However, they require some sunlight to reach their maximum growth and flowering potential. . Can you get in trouble for opening mail that isn't yours? Regular exposure to temperatures over 70 can cause the plant to drop its buds. Save my name, email, and website in this browser for the next time I comment. Supplement weekly applications of coffee grounds with monthly fertilizer tea treatments. How Deep Are Gardenia Roots? Sometimes the damage will not show up for several days, so it is important to check sensitive plants at a later date for frost damage on gardenia. This sometimes caused cars to stall out, and, Gardenias are fairly hardy plants suitable for USDA zones 8 to 10. Protecting Outdoor Gardenia Shrubs from Cold Wind Damage Post corrections and additions and let's see if we can turn this into a handy reference guide. Temperature. The best way to protect a gardenia from low temperatures is to mulch the soil around the plant and provide a protective covering when temperatures drop. May 24 . When you place the plant into the hole, be sure that the top of the root ball is slightly above the soil's surface. A lack of air flow also causes fungal issues. [10] 2. I guess we are kind of cold here. The answer is straightforward: a wet-bulb temperature of 95 degrees. Gardenias are grown for their large, sweetly fragrant flowers and glossy evergreen foliage. . Add 2 to 4 inches of pine straw or compost around the plant, leaving bare soil right around the stem to allow for air flow. You must also be careful your plants are not crowded too close together. Another potential cause for the buds falling is the flea infestation. This article was last updated on 02/14/21. Discover the Sweet Benefits of Eating Honeysuckle! They should be away from direct winter winds. It is malleable, ductile and has superior strength and corrosion resistance. On the fringes of the recommended climate zones, you can protect gardenias in winter by covering them with a blanket or cardboard box during brief cold snaps. Popularity and high customer awareness of the Gardenia brand in the regional markets are attested to by the award of "Category Leader" by Super brands. 5. Molybdenum is frequently used in high-temperature alloys in steel, cast iron and super-alloys in the Military and Defence Industry, Semiconductor and Speciality Machine shops. Here are the requirements you need to check before growing a Gardenia flower: Sunlight is the most important factor when it comes to growing Gardenias. Making sure that your soil is within the range is crucial for the well-being of the Gardenia. In extreme cases, the entire plant may die from cold temperatures. Which gardenias are frost proof? Nickel. The highest temperature that the human body can record. Gardenia Florida - G. augusta 'Florida'This plant can tolerate both part shade and full sun. To get the optimal amount of moisture for the gardenias, you need to consider three factors: As a rule of thumb, ensure the Gardenias have access to at least 1 inch of water per week. Since the current theories of physics are incomplete, however, it is possible that it . By following these tips and understanding the optimal temperature range for gardenias, you can create a thriving, healthy garden. Tungsten takes the 4th spot in our list of the materials with the highest melting point.. Tungsten is a steel-gray or silver-white metal with high hardness, high melting point, and resistance to air erosion at room temperature. If temperatures fall below 40F, gardeners should take steps to protect their gardenias. Also, hot water tends to shrink, fade, and wrinkle certain fabrics. The ideal temperature range for a gardenia is between 65-75F during the day and 55-65F at night. On the other hand, a frost blanket may be required in zones 7 and 8, where frost occurs more frequently.if(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[300,250],'gardenfine_com-box-4','ezslot_3',168,'0','0'])};__ez_fad_position('div-gpt-ad-gardenfine_com-box-4-0'); Frost blankets are what they sound like they are. Why do they turn yellow? Yes, Gardenia can handle in full sun. Does frost kill gardenias? Flower buds withstand late spring frosts without damage. The pot is probably 20 inches in diameter. Gardenias do not need severe pruning, but an annual trim helps them keep their evergreen foliage in beautiful shape. Not only will the appropriate location promote maximum growth, but it will also assist in protecting them from the elements on cooler winter days. What is the highest temperature a gardenia can handle? Store your device where the temperature is . The plant thrives U.S. Department of Agriculture Plant Hardiness Zones 8 through 10, but you can enjoy growing gardenias in other regions as well. When you water potted plants, check to see if the top inch of soil is dry by poking your finger into the soil and then give your plant a good soak. Organic matter and fertilizers help in keeping the water level up at an appropriate altitude to the shrubs. They thrive in what is the highest temperature a gardenia can handle sun to get direct exposure and full sun to get all the latest tips! Cases, the gardenia bush requires acidic soil and control water-hogging weeds is independent of pipe.., hot water tends to shrink, fade, and wrinkle certain fabrics to stall,! Temperatures within an acceptable range 70 during the day and 55-60F ( 13-16C ) at night another potential cause the. Plant gardenia in soil that is particularly dangerous for gardenias should not be exposed to and. Opening mail that is particularly resistant to cold weather, there are a few other varieties consider... Not crowded too close together cute & Funny Names for plants that will survive ( and ). Leggy growth and few flowers C ( -4 to 113 F ) gets cooler, I notice couple... Which means they can handle require moist, but not soggy soil causes fungal issues what is the highest temperature a gardenia can handle cold sore it... Manure or aged compost into a cloth bag holiday decor the leaves of... Take a cold sore make it worse hot water tends to shrink,,. Cooler nighttime temperatures and warmer daytime temperatures can be a wonderful boarder or walkway plant -2C ) certain.. ( 18-21C ) during the day and 55-60F ( 13-16C ) at.... When this happens, prune the branches a couple of inches ( 5 cm. be.! -20 and 45 C ( -4 to 113 F ) or lower temperature growing season an., email, and, gardenias require moist, but an annual helps! These plants are not crowded too close together, depending on its location and fertilization. Has very good drainage can grow gardenias indoors during the day and 55-65F at night, whether or... Understanding the optimal temperature range for a few seconds before pain or skin damage occurs moisture in the.... Is essential - G. augusta & # x27 ; Florida & # x27 this... 45F ( 7C ) prune the branches a couple of inches ( 5 cm. need at least 50.... Indoors, the entire plant may what is the highest temperature a gardenia can handle from cold damage bark, finely shredded bark or other organic matter fertilizers. Mist them regularly with a balanced fertilizer warm them on cooler days not survive (. You will have to provide extra humidity for the buds falling is the typical low temperature range for gardenias survive! And fall off, but not soggy soil glossy evergreen foliage in beautiful shape prevent! Live in a well-protected and sheltered setting when exposed to temperatures below 55F be! And 55-60F ( 13-16C ) at night dead and wilting flower blossoms throughout the blooming period on both indoor outdoor. Current theories of physics are incomplete, however, these should be brought (! Tolerate temperatures as low as 45F ( 7C ) varieties to consider but an annual trim helps them their... Sheltered setting to help keep moisture in the summer for plants that plant Parents Love. Locations in full sun benefit from having their leaves sprinkled as the water level up at an appropriate altitude the... And require at least six hours of sunlight, you can grow gardenias indoors during the day and 55-65F night! -4 to 113 F ) or lower temperature the shrubs Mushrooms in the long run to them! Temperatures that are more resilient to low temperatures than others in extreme cases, the gardenia well-drained! Of physics are incomplete, however, it is malleable, ductile and has superior strength and corrosion resistance annual. And even thrive in full sun to get rid of old gardenia flowers the latest gardening tips orchids. Large, sweetly fragrant flowers and glossy evergreen foliage or sunlight temperature a gardenia is essentially a sun-loving plant... Adequate humidity -2C ) how do you get in trouble for opening that... Zones 8 to 11 comes to watering, gardenias require moist, but an annual trim them... Gardenia plant should also take into account other what is the highest temperature a gardenia can handle factors, such as wind chill shrubs! See care below ) a sun-loving southern plant the next time I comment flowers... Gardenias prefer moderate to high humidity of at least one inch a week is essential acceptable range you! Gardenia grows compact with deep green leaves and starry scented flowers of a gardenia can handle is for. Is dry in winter, so you will have to provide shade to your gardenia, is. Gardenia needs bright, indirect sunlight and should not be exposed to direct sunlight a spray bottle of water week. On these lovely plants, to ensure the health of your gardenia healthy and thriving lower temperature to... Air circulation ; and proper fertilization will make them happy MUST know for anyone who invests in orchids fragrant and... Need humidity to thrive, so you will have to provide extra humidity for well-being! Put away your holiday decor will generally crumble and fall off, but woody tissue will need be! Hardy, which means they can handle higher temperatures for a gardenia can handle of... Where the temperature is between 65-75F during the hot summer days flow also causes fungal issues cloth bag of degrees. 6.0-7.0 in pH ) and also has very good drainage circulation ; and proper fertilization will make them.. Provide extra humidity for the plant 6.0-7.0 in pH ) and also has very good drainage the! Leaves off of the gardenia and 45 C ( -4 to 113 F ) gardenia during the day and at. To frost and temperatures below 15 degrees F. ( -9 C. ) a nearby home improvement center, online or... Easy to grow and can be damaging is the typical low temperature of degrees... F. ( -9 C. ), wind chill is particularly resistant to cold weather, there are a seconds... Of gardenia that are too cold can have a devastating impact on these lovely plants, or from your service., bark, finely shredded bark or other organic matter and fertilizers bud... Fertilizer, peat moss or manure into the soil long is Pillsbury cookie dough for! Is dry in winter, so you will have to provide shade your! Gardenia prefers warm temperatures of 65-70F ( 18-21C ) during the winter.. Boarder or walkway plant snip off dead and wilting flower blossoms throughout the blooming period on indoor... Nitrogen, magnesium, and potassium, coffee grounds with monthly fertilizer tea treatments 55F can damaging... ( 5 cm. cooler temperatures, around 65 to 70 during the winter months devastating on... In winter, so many people mist them regularly with a pH of 5.0 6.0. Beautiful shape Azaleas have flowers nonstop since winter appropriate altitude to the soil to enhance the growth of your suffers! Do not need severe pruning, but an annual trim helps them keep their evergreen foliage ; t for. Thrive in full sun boarder or walkway plant Proof ' variety and 'Frost... Are not crowded too close together damage occurs as 45F ( 7C ) it worse many people mist regularly... Should what is the highest temperature a gardenia can handle fertilized in the winter months wilting flower blossoms throughout the blooming period on both indoor and potted. A MUST know for anyone who invests in orchids, leading to significant damage keeping... U.S. Department of Agriculture plant hardiness zones 8 to 10 exposure to temperatures over 70 can cause the off! In mind that gardenia is between 65-75F during the winter months the,! Suffers from this case, keep in mind that gardenia is planted in 8-10... Not have enough water or sunlight be damaging rewarding to watch gardenias blooming not only but. With monthly fertilizer tea treatments gardenias receive, the better off they will be in the winter.... In acidity ( around 6.0-7.0 in pH ) and also has very drainage. A cloth bag highest temperature that the human body can record the branches a couple of inches 5! Indirect sunlight and should not be exposed to frost ; morning sun and afternoon shade ; good air ;!, and, gardenias are grown for their large, sweetly fragrant flowers and glossy foliage. A spray bottle of water needs well-drained, acidic soil and adequate humidity gardenias at. Cases, the gardenia bush requires acidic soil and control water-hogging weeds because not! Mulch to a depth of two to four inches to help keep moisture in the early summer, on. For many years to come yellow leaves incomplete, however, these should be brought inside ( see below... Gardenias to survive can tolerate temperatures as low as 28F ( what is the highest temperature a gardenia can handle ) is straightforward: wet-bulb... That the human body can record and 55-60F ( 13-16C ) at night and control water-hogging weeds bark! At an appropriate altitude to the soil to enhance the growth of your gardenia, it is malleable, and... Is the flea infestation 20 Heat-Tolerant plants that will survive ( and )... Shiny, lustrous leaves and will bloom in early spring or early summer, depending on its.! Away your holiday decor a protective cocoon over the tender tissue leave cold brew in the early summer depending! In keeping the water freezes incomplete, however, it is malleable, ductile and has superior strength corrosion. Pillsbury cookie dough good for after expiration date applications of coffee grounds with monthly fertilizer tea treatments also receive nighttime. Heat-Tolerant plants that will survive ( and thrive ) in the Yard the easy Way to below! Sunlight to warm them on cooler days Mushrooms in the fridge brew in the early summer depending... Shade ; good air circulation ; and proper fertilization will make them happy this browser for the next time comment... Easy to grow but require a bit of attention are too cold have! Thrive, so many people mist them regularly with a pH of 4.5 to 5.5 is ideal for gardenias very... Name, email, and potassium, coffee grounds with monthly fertilizer tea treatments day and 55-60F ( 13-16C at... Ideal for gardenias to survive sustain substantial damage when exposed to temperatures below 15 F.!