A Detailed Guide to the Latest Cultivation Methods for Dwarf Gardenia

Dwarf gardenia, also known as bird's-tongue gardenia, small-flowered gardenia, bird's-tongue flower, etc., is an evergreen shrub of the genus Gardenia in the family Rubiaceae. It is cultivated in most parts of China and has very high ornamental value. It can be planted in massed clumps or positioned along forest edges, in front of courtyards, at courtyard corners, and beside roads, and can also be used for balcony greening, potted flowers, cut flowers, or bonsai. Let's take a look together at how to cultivate dwarf gardenia!

Growth Habits of Dwarf Gardenia

Dwarf gardenia is a typical acid-loving flower. It prefers a warm and humid climate and is not cold-tolerant. It likes sunlight but cannot withstand intense direct sun. It grows best in loose, fertile, well-drained, slightly clayey acidic soil. In Northeast China, North China, and Northwest China, it can only be grown as a potted flower in a greenhouse. It is resistant to sulfur dioxide and can absorb sulfur to purify the air.

Propagation Methods of Dwarf Gardenia

1. Sowing: Dwarf gardenia is mainly propagated by seed, mostly in spring, but the seeds germinate slowly, sprouting about 1 year after sowing and flowering after 3 to 4 years. In the north, potted plants rarely produce seeds.

2. Cuttings: In the north, take cuttings in a greenhouse from October to November; in the south, cuttings can be taken anytime from April to the Beginning of Autumn, but the survival rate is highest between summer and autumn. Select healthy 2-year-old branches as cuttings. When the rooted seedlings begin to grow, transplant them or pot them individually. They can bloom after 2 years.

3. Layering: In April, select vigorous branches from a 3-year-old mother plant for layering. If there is a three-forked branch, layer at the fork, and three seedlings can be obtained at once. Roots generally form in 20 to 30 days. In June, they can be separated from the mother plant, and by the following spring they can be planted separately or potted individually.

Cultivation Methods for Dwarf Gardenia

1. Soil: Dwarf gardenia should be given acidic potting soil, with an ideal pH of 5 to 6. The growing medium can be leaf mold, peat soil, or composted sawdust mixed with half garden soil. Avoid old wall soil and coal cinders.

2. Watering: Water dwarf gardenia whenever the surface of the potting soil becomes dry. In the evening, you can use a spray bottle to sprinkle water on the leaves. For plants that are growing too vigorously with longer internodes, do not water in the evening; water instead in the morning after the sun comes up.

3. Fertilizing: Add 3% decomposed cake fertilizer to the growing medium as a base fertilizer. During the growing season, water once a week with alum fertilizer water made by composting cake fertilizer with ferrous sulfate. During the bud stage, water once or twice with a 0.1% potassium dihydrogen phosphate aqueous solution. Stop fertilizing in summer when temperatures are above 35°C and in autumn when they are below 15°C.

4. Light: Dwarf gardenia likes sunlight but cannot withstand intense direct sun. It can also grow in semi-shade for a long time, but it needs to maintain 60% of full-day light to meet its growth needs.

5. Repotting: For home potted dwarf gardenia, repot when the crown width reaches about 28 cm. If repotting, plant it into the new pot together with the root ball. It is usually better to change the soil in March of spring.

6. Pruning: For dwarf gardenia, select and keep three main branches according to the tree shape, and promptly cut off other branches sprouting from root suckers. Remember not to cut back the branch tips in spring, otherwise it will not bloom that year.

7. Overwintering: In the north, the root system of dwarf gardenia is damaged after the severe winter and only recovers in spring, so the pot should be wrapped well with insulation materials such as foam plastic to protect the root system, and placed in a wind-sheltered, sunny spot to overwinter.