F1 Printemps

The lisianthus is a member of the Gentian family and has a wide range of flower color, shape, size, and early to late flowering characteristics; and year-round production has been achieved in Japan.

Generally, in cold climates plant in spring for summer to fall harvest. In warm climates, plant in summer to fall for year end to spring harvest.

For January-February harvest, the temperature should be maintained higher than 12-15℃ at night and around 25℃ during the day. After planting, young plants should be covered with a plastic tunnel until they grow about 10 cm in length during the winter, the temperature should be maintained at 30°C during daytime. After having flower budding, the temperature should be kept below 25°C.

During the seedling period, pay attention to the damage by fungus gnat. Then later thrips, whiteflies, aphids, and mites should be paid attention. Repeating same crop triggers Fusarium wilt so the soil should be disinfected before planting.

After germination, gradually increase light to promote healthy seedling growth. 30 days after germination, apply Otsuka Chemical's OK-E9 (N.P.K. 15), diluted at 1,000 to 1,500 times to accelerate growth. Lisianthus has a relatively long nursery period, and its growth rate depends on good management. Excessive humidity is strictly prohibited. Irrigate every time the soil dries out, as extreme drought will cause the tree to wilt, making it difficult for the grass to grow. After planting, the irrigation frequency should be reduced as the tree becomes densely planted. When the buds begin to develop and bloom, it is advisable to irrigate the plants very sparingly to keep the trees tight. (Do not irrigate for 1 to 1.5 weeks before cutting flowers.)

Sowing:
Seeds are coated. The seeds should be sow in a well-drained seeding soil. 288 or 406 plug tray are common. The optimum germination temperature is 25 to 30℃. It takes about 15 days for germination. Rosette is prone to occur when the night temperature exceeds 18℃. To avoid rosette during high temperatures season, give cold treatment after sowing by refrigerator at 10°C for 30 days.

Planting:
In Japan, the typical plant space is 10 cm x 10 cm with 4 rows (2 rows without middle) or 12 cm x 12 cm with 4 rows. 30,000 plants/10a. Flowers can be harvested 3 to 4 months after planting.