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How Do I Choose the Best Gardenia Fertilizer?

Gardenia fertilizer should be chosen to meet the specific nutritional needs of the plant.
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  • Last Modified Date: 06 August 2014
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The best gardenia fertilizer contains a high nitrogen content and is designed to stimulate these acid loving plants. Gardenias flourish in acidic soil with high nutrient contents. During the reproductive cycles of the plant, this type of soil can gradually become stripped of its natural nutrients and gradually turn to an alkaline pH. Gardeners can correct this process by adding both acid stimulating compounds and gardenia specific fertilizers to the soil to restore the elements this type of flowering shrub needs to remain healthy.

Gardenias prefer soil with a high acidic content. Gardeners can begin their search for the best gardenia fertilizer by first having the pH balance of their soil tested. Soil with a high alkaline number, which can be in the range of 7 or higher, should be treated with a soil acidifier. This type of solution, which is different than a fertilizer, is designed to add sulfur, iron, copper, and zinc back into the soil. Gardenias which are experiencing nutrient deficiencies tend to stop flowering temporarily and may also exhibit yellow leaves which fall quickly off the plant.

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All fertilizers contain a blend of nitrogen, phosphorus, and potassium. Each ingredient is essential to healthy plant growth including flower production, leaf budding, and strengthening roots. Most flowering plants, like gardenias, prefer a blend with larger amounts of nitrogen, to stimulate flower growth and plant reproduction during blooming months. The best types of gardenia fertilizer are typically heavy in nitrogen content, and may contain ratios of 30-10-10 or 6-4-4. The first number in the series represents the amount of nitrogen present, while the second and third numbers indicate the percentages of phosphorus and potassium contained within the mix respectively.

Gardeners who are comfortable using man made compounds in their gardens may prefer a 30-10-10 mix of gardenia fertilizer. This type of substance should be spread around the plant during the flowering months, usually April through November in moderate climates, and watered in thoroughly. The feeding cycle can be repeated every three weeks to encourage additional flower and leaf production. Organic gardeners will benefit from selecting a 6-4-4 type mix which typically does not contain any inorganic ingredients, and is designed to release nutrients into the root system of the plant slowly throughout the entire growing season. This mixture can be applied in early spring at the start of the flowering season, and again in early fall to provide the plant with nutrients before the winter.

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Discuss this Article

umbra21
Post 3

@bythewell - Just be aware that they can get pretty overwhelming, depending on your climate and what kinds you choose to get. Gardenia isn't a subtle kind of plant. I love the smell as much as anyone, but if you've got someone who is sensitive to it in the house you definitely do not want to plant them in an area where the scent will get trapped.

They are actually related to the coffee tree, which I always thought was rather strange, but if you get a look at a coffee plant it makes sense since they have similar looking leaves.

bythewell
Post 2

@Iluviaporos - Well, I mean the better thing to do, if you don't want it in a pot, is just to figure out how much fertilizer it needs and when it will need it and write it up into a yearly calendar.

I mean, you'll probably need to make sure it's in an area with other plants that enjoy the same kind of soil types, but even just a group of gardenias would be nice.

lluviaporos
Post 1

My suggestion would be to keep the gardenias in a pot. There's nothing nicer than having a lovely gardenia in full bloom to greet your guests at the front door and in this way you'll be able to monitor the soil without worrying about it affecting anything else you've got nearby.

This is particularly true if you're not the kind to really pay that much attention to soil until there is actually a problem, because if the gardenia is stripping nutrients from the earth it will affect everything else before it affects itself. Better to keep it isolated so it can't do that.

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