Reproduction tuberous begonias.
Begonias are propagated by dividing the tubers, autumn and spring cuttings, seeds.
If the spring germinated tuber begonias appears several germs (on a large tuber sprouts usually happens 2-5), the tuber at the height shoots no more than 5-6 cm can be cut into pieces, sprinkle slices pounded charcoal, dry the slices and then put the flesh in box or in pots on germination. Reproduction tuberous begonias division of the tuber is often practiced for rejuvenation of old tubers, as the old plants bloom worse young.
Also, when the germination of tubers can be gently unscrew them from the "extra" shoots a height of about 12 cm (leaving one will run on each tuber for further growth). Sprinkled with pounded charcoal sores dried cuttings and perpetuate them in water or in a pot (bury shoots 2-3 cm in a mixture of peat and sand, watered). In a pot with rooting cuttings are building a "mini-teplichku" to maintain high humidity. Rooted cuttings of begonias are seated in one of the pots with a substrate.
For targeted breeding tuberous begonias spring cuttings, large tubers in the autumn provide a three-month period of rest and drop them on the germination in January; Cut cuttings from tubers usually carried out twice. When sprouts appear 3 sheets, then cut them with a razor cuttings with two leaves, leaving part of the tuber sprout with one leaf (otherwise tubers can no longer germinate).
Slices cuttings pripudrivayut pounded charcoal and cuttings are planted under the scheme 5x5 cm substrate (leaf and peat soil, sand in equal parts), watered, maintained at a temperature of 20 degrees and high humidity and soil pritenyayut from the sun. Cuttings rooted in a month, then they are planted in individual pots with a substrate.
In addition to the spring grafting growers spend and autumn cuttings tuberous begonias: in late August, just before digging plants from the garden, separated from tuber sprouts adults begonias (Begonia young, grown from seed, not by cuttings). Cuttings of begonias planted in pots with a substrate to a depth of 4 cm and contain up to spring as houseplants with moderate watering. Since the winter at tuberous begonias is undergoing a period of rest, the cuttings can wither away most of the leaves (and sometimes the entire above-ground part), but retaining compacted underground part.
Cuttings in the spring seated in individual pots with fresh substrate. In spring ampelnoe begonias usually leave three most powerful escape, while the rest are cut on cuttings and root in the "mini-teplichke"; young plants bloom in August. And if in August to take adult flowering begonias stepchildren and implant them, after wintering on a light box, young begonias bloom in early May.
Growing tuberous begonias tsvetovodami- lovers of seeds represents some difficulties and has singularities. Begonia seedlings for better growth requires supplementary lighting the evening (about 5 hours) until the end of March. To grown from seed begonias bloom in the same year and had time to form large tubers with a diameter of 3-4 cm, requires early seeding (optimally in early January).
During late planting (from early February to early March) in the first year of the young plants get small planting material diameter of 1-2 cm, which will bloom next year. Tuberous begonia seeds in very small; they remain viable for 3 years, but it is better to sow freshly harvested seeds. Plastic boxes a height of about 6 cm with drainage holes and fill disinfected sieved wet substrate, watering it a day before sowing, line the surface with a dry substrate.
Begonia seeds rarely sow over the soil surface and not sprinkled, sprayed with fine spray of warm water and cover glass (film), put in a warm place with a temperature of 21-25 degrees (light for germination is not needed). Daily glass wipe and turn, winding crops. Mass seedlings usually appear after 1-2 weeks; from the third day after seeding need to check daily, if they do not naklyunulis. As soon as the first seeds appear roots, drawers with crops transferred to a cool bright windowsill with a temperature of about 15 degrees, so that the seedlings are not stretched.
On sunny days, the seedlings pritenyayut, if necessary, slightly moisten the soil in the morning with an atomizer (excessive humidity destroys seedlings and provokes the formation of mold on the surface of the soil); after the evaporation of moisture from the seedlings sprouting again cover glass. With the development of the seedlings begonias one true leaf is held the first pick is the seedlings with a lump of the substrate at a distance of 2-3 cm. Raspikirovat plants carefully watered with warm water (28 degrees), do not cover glass, pritenyayut the first 2-3 days, kept at a temperature of 16-18 degrees, periodically watered the soil and aerate landing.
Aboveground part of the plant grows slowly, but they are already beginning to form and plump klubenÑ‘k. The second pick is the scheme 6x6 cm is conducted with the beginning of contact between adjacent leaves of plants; then the plants are planted in pots with a diameter of 9 cm. Later not intended for planting in open ground begonias rolled over in 12 cm pots. 10 days after the second pick, begin fertilizing begonias liquid fertilizer every 10 days. Tuberous begonias grow best at a humidity of 60-70%; foliar undesirable (brown spots appear).
In May need to gradually accustom intended for planting in open ground plants to fresh air, opening the vents when warm weather on cloudy days and at night. Pots of begonias periodically exhibit hardening to fresh air (in the windless partial shade), gradually increasing the residence time in the street. After the end of spring frosts seedlings planted in open ground and provide the required care.