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The gardenia is one of the well-known indoor plants and among the most beautiful to flower.
In summary, what you need to know:
Last name : Gardenia
Family : Rubiaceae
Type : Houseplant, shrub
Height : 2m and 0.5 to 1m indoors
Ground : potting soil
Exposure : Bright
Foliage : Persistent
Flowering : May to October
Maintenance, watering, pruning, and repotting should help improve flowering.
Planting and repotting the gardenia
Growing gardenia is not always easy and some care is needed to promote the growth and flowering of the gardenia, it starts with planting and repotting.
The gardenia indoors is the most frequent use of the gardenia because our climate does not allow us to grow it outdoors in winter.
- It is recommended that you plant your gardenia in good houseplant soil.
- Choose a very bright location but without direct sunlight.
Repotting the gardenia:
If you are growing your gardenia in a pot, repotting every 2 to 3 years is necessary.
- Wait until the plant is cramped in its pot before repotting.
- Repotting the gardenia is done in early spring.
Planting gardenia outdoors is only possible in hot summer and mild winter climates because it is not frost resistant.
- Choose a place sheltered from the wind, sunny but not too exposed, ideally partial shade.
- Mix the soil in your garden with potting soil and heather soil.
The best way to multiply a gardenia stay oncuttings even if this technique is not not always easy to implement.
- The cuttings take place in early spring.
- Take cuttings of about 8-10 cm.
- Remove the bottom leaves to keep only the top pair.
- Soak the cutting in cutting hormone.
- Plant the cuttings in a special cutting soil or in a mixture of peat and river sand.
- Place your cuttings in the light, without direct sunlight and with a high humidity rate (you can cover the cuttings with a bell or transparent plastic to increase the humidity level)
- Keep the substrate slightly damp.
- Repot the young plants when the cuttings have already formed beautiful leaves.
Watering the gardenia
The gardenia dread limestone and therefore prefers watering with rainwater or with bottled mineral water.
- He also needs a constant humidity.
- During flowering, do not wet the foliage as this discolors the flowers and causes stains on the flowers.
Good ambient humidity:
To recreate the natural moisture conditions it needs, you can place it on a bed of clay balls or gravel that you will always leave soaked in water.
Thanks to evaporation, you recreate the natural conditions of plant life in the tropics.
Watering in spring and summer:
Water regularly without flooding the plant.
Wait until the soil surface is dry between 2 waterings.
Watering in fall and winter:
Reduce watering. Allow a good length of a finger to dry the substrate before watering again.
After flowering, trim lightly your shrub to maintain its beautiful, compact shape while reducing branching by 1/3.
Remove faded flowers as they appear, this stimulates the appearance of new flowers.
In order to strengthen the plant and have a spectacular bloom, bring a special heather fertilizer.
A repotting in spring and every 2 years in a mixture of heather soil and potting soil is necessary for the good development of the plant
Grown indoors, the gardenia is prone to diseases and insects, or mites, that affect this type of plant.
The main pests are aphids, mealybugs and red spiders.
- Treat mealybugs
- Effectively fight against aphids
- Treatment against red spiders
Note that if the gardenia leaves turn yellow and that the veins remain green, it is probably a chlorosis related to too hard water.
If the flowers fall before they open, it is probably a lack of humidity. Mist soft water on unopened leaves and flowers (stop when the flowers are open as this causes stains)
To know about the gardenia
The gardenia is certainly one of the most beautiful plants interior.
Native to the tropics and subtropics of Africa, Asia and Oceania, it is particularly liked for its abundant flowering which gives off a sweet jasmine scent.
This plant adapts very well to our interiors as long as it has a very high humidity level. Never put it near a radiator to avoid dehydrating her.
Outdoors, she needs a very mild climate and therefore no frost in winter.
In winter, it does not support frost and must be returned.
After the purchase of your gardenia, wait for the end of flowering and do a repotting : this will stimulate growth and good development.