Scientific name: Begonia hiemalis
English name: Rieger Begonia
Common name: Rose Begonia
Family: Begoniaceae
Plant morphology:
Rieger Begonia has a fibrous root system, with fleshy and juicy stems. The leaves are alternate, heart-shaped, typically dark green, though some varieties may have brownish tones. The foliage is smooth and waxy, with a palmate venation pattern. The flowers are diverse in shape, often double-petaled, and come in a range of colors including red, orange, yellow, white, and more. These plants do not produce seeds naturally and are usually propagated through cuttings or tissue culture.
Leaves: Single leaves are arranged alternately along the stem, with a basal heart shape. The leaf margins are heavily toothed or lobed, and the surface is smooth and covered with a waxy layer. The leaves are generally dark green and add to the plant’s ornamental appeal.
Flowers: Rieger Begonias bloom during short-day conditions, producing showy, double-petaled flowers in vibrant colors. They are known for their winter flowering, making them a popular choice for holiday decorations.
Growth habits:
This plant prefers a warm, humid, and well-ventilated environment. It requires careful management of light, temperature, moisture, and nutrients. Since it doesn’t produce seeds, propagation via cuttings or tissue culture is essential. The stems are succulent and fragile, so care must be taken when handling. Watering should be done carefully, avoiding direct contact with leaves or flowers. Allow the soil to dry slightly between waterings, then water thoroughly.
Rieger Begonia is a perennial hybrid with a delicate structure. It thrives in cooler temperatures but struggles in high heat and humidity, which can lead to disease. It prefers indirect light and should not be exposed directly to sunlight.
Propagation:
The most common method is through leaf or stem cuttings. During the cool season, typically September to October, strong, healthy leaves or cuttings are selected. After about 20 days, roots begin to form, and the cuttings are transplanted into vermiculite or river sand. To encourage faster growth, increase night lighting by 3 hours after cutting. After one month, transplant into a 3-inch pot, and after 50 days, move to a 4–5 inch pot. Stop the light to promote blooming in late spring.
Temperature:
Ideal growing temperatures range from 15°C to 22°C. Below 5°C, the plant may suffer frost damage; below 10°C, growth slows down. Above 28°C, growth becomes sluggish, and above 32°C, it stops altogether. For optimal vegetative growth, maintain nighttime temperatures around 19–20°C. When temperatures exceed 24°C, the plant may become leggy, and light intensity should be reduced. A slight drop in daytime temperature compared to nighttime helps control legginess and improves overall quality. Northern growers are advised to keep daytime temperatures at 16–18°C and nighttime temperatures at 20–21°C for best results.
Moisture and Humidity:
Due to its fleshy rhizome and delicate root system, proper watering is crucial. Underwatering can cause slow growth, soft stems, and root rot. Water according to the "see dry, see wet" principle, and avoid wetting the leaves.
Early growth requires high humidity (80–85%), especially in southern regions where misting the floor during midday can help maintain air moisture. In northern areas, greenhouse humidification is necessary, but avoid watering the leaves in the afternoon to prevent condensation. When forming flower buds, reduce humidity to 55–65% to prevent diseases like powdery mildew and gray mold. Keep the soil moist at 70–80% to maintain health, and ensure good air circulation to prevent moisture buildup on the leaves. Water early in the morning so that the leaves dry by evening.
Light control:
In southern regions, initial light intensity is around 68,000 lux, and temperatures are above 25°C. Provide over 70% light during this time. As temperatures drop in late October, gradually increase light exposure. From mid-November onward, allow full sunlight, with light intensity reaching up to 25,000 lux. Northern growers should provide shade for the first two weeks after potting, then expose the plants fully once they are established. Shade the plants two weeks before shipping to extend shelf life.
Growing medium:
Rieger Begonia thrives in well-draining substrates such as coconut coir, peat moss, vermiculite, perlite, and bark. A recommended mix is 80% high-fiber peat soil combined with 20% perlite for optimal drainage and moisture retention.
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Product Dimensions: Customized
Casting General Tolerance: Grade GB-CT4
Flow Processes: Die casting, Degating to remove the residual of the gate, Polishing and Deburring to remove the burrs, Polishing to remove the parting line, flash,CNC Turning, Cleaning, Packaging, Storaging, Shipping
Control Measure: Incoming Material Test, First Article inspection, Routing inspection, Final item inspection, and Outgoing quality control
Inspection Equipment: CMM, Caliper, Plug Gage, Screw Gauge
Application: Machinery Parts
Certificate: IATF16949:2016,ISO14001:2015,ISO45001:2018
Lead Time: 30-35 days
Trade Term: FOB Ningbo
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