African Violet Growing Methods and Precautions Explained in Detail

The African violet originates from the tropical regions of East Africa. It prefers a warm climate, dislikes high temperatures, is fairly shade-tolerant, and grows best in diffused light. The plant is small and delicate, with brilliantly colorful flowers that bloom in all four seasons. It is an excellent indoor flower and a world-famous potted plant, especially popular in Europe and America. Let us take a look below at the growing methods and precautions for African violets!

The Growth Habits of African Violets

African violets prefer a warm, humid, and semi-shaded environment, and in summer they fear strong light and high temperatures. The optimal growing temperature is 16-24°C, with 18-24°C from April to October and 12-16°C from October to April of the following year. Daytime temperatures should not exceed 30°C, as high temperatures are detrimental to the growth of African violets. In winter, nighttime temperatures should not drop below 10°C, otherwise the plant is prone to cold damage. A relative humidity of 40%-70% is more suitable; if the pot is too wet, the roots rot easily. If the air is dry, the leaves lose their luster. African violets need shading in summer, and their leaves stay fresh and green; in winter, they need ample sunlight to bloom continuously. Adding supplemental light on rainy and snowy days is very beneficial to the growth and flowering of African violets.

Growing Methods for African Violets

1. Soil: The potting soil should be loose and fertile, and it is best to use soil rich in humus. Generally, mix 5 parts leaf mold, 3 parts garden soil, and 2 parts decomposed manure soil, or mix 6 parts leaf mold with 4 parts sandy loam, or mix equal parts leaf mold, peat soil, and sand thoroughly.

2. Watering: Watering is very important. In early spring, when temperatures are low, do not water too much, otherwise the stems and leaves rot easily, affecting flowering. In summer, when temperatures are high and the air is dry, water more and spray water to increase air humidity, otherwise the flower stalks droop and the flowering period shortens. However, if too much water splashes onto the leaves when spraying, it can also cause leaf rot. In autumn and winter, as temperatures drop, watering should be appropriately reduced.

3. Sunlight: The light intensity African violets need is about 200-800 foot-candles, with a exposure time of about 8-12 hours. If you want to promote flowering, the light duration can be gradually extended to 16 hours. The intensity of direct outdoor light is often greater than 8,000 foot-candles, which easily causes sunburn to the plant's leaves and is not suitable for African violet growth. However, indoor light sources are also often insufficient, causing the plant to grow slowly, fail to bloom, or become leggy.

4. Temperature: It prefers warmth, with an optimal growing temperature of 16-24°C, 18-24°C from April to October, and 12-16°C from October to April of the following year. Daytime temperatures should not exceed 30°C, as high temperatures are detrimental to the growth of African violets. In winter, nighttime temperatures should not drop below 10°C, otherwise the plant is prone to cold damage.

5. Fertilizing: Fertilizer should be applied lightly. During the growth and development period, apply a diluted, decomposed liquid fertilizer or compound fertilizer combining nitrogen and phosphorus once every 10 days or so, but be careful not to use too much nitrogen fertilizer, otherwise the leaves grow very luxuriantly but few flowers are produced. For this reason, the ratio of nitrogen, phosphorus, and potassium fertilizer is best at 1:1:1.

6. Pests and diseases: Under conditions of high temperature and high humidity, wilt disease, powdery mildew, and leaf rot are prone to occur. A 1000-fold dilution of 10% antibacterial agent 401 acetic acid solution can be sprayed or poured into the potting soil. Scale insects and red spider mites often harm African violets during the growing period, and a 1000-fold dilution of 40% omethoate emulsifiable concentrate can be sprayed to kill them.

Precautions for African Violets

1. Choice of pot and substrate: Since the root system of the violet is small, the pot should not be too large when planting; choose a pot size corresponding to the plant's size. The substrate for potting should be a loose, fertile, well-drained, neutral to slightly acidic growing medium.

2. Watering and fertilizing: The amount of water should be determined according to the growing season. In winter and early spring, when temperatures are low, watering should not be too frequent; water only after the potting soil has dried, and keep relative humidity at around 40%. In summer, when temperatures are high, water more and spray water around the plant frequently, keeping relative humidity no less than 70%. In autumn, as the climate cools, watering should be reduced accordingly. During the growing season, apply a diluted, decomposed cake fertilizer water or liquid fertilizer once every 2 weeks, but be careful not to apply excessive nitrogen fertilizer. After flower buds appear, apply 0.5% superphosphate 1-2 times to make the flower colors more vivid. When watering and fertilizing, be careful not to get it on the leaves to avoid rot.

3. Temperature and light: The suitable growing temperature for violets is 18-24°C. In summer, the temperature should not exceed 30°C, so measures such as shading, cooling, and humidifying should be taken. They must not be exposed to direct strong light, but they also should not grow for too long under excessively shaded conditions, which can cause fewer and paler flowers, or even failure to bloom. For home growing, they can be placed in a spot with diffused light and good ventilation. In winter, the temperature should not drop below 10°C.

4. Pay attention to pest and disease control: During cultivation, root rot, crown rot, powdery mildew, aphids, mites, thrips, nematodes, and other problems are prone to occur. Attention should be paid to ventilation and disinfection of the growing substrate before use. When the above pests and diseases are found, relevant pesticides should be sprayed promptly for control.