Nasturtium, scientific name: Tropaeolum majus, also known as nasturtium, lotus leaf, is a perennial herb of the genus Trollius of the genus Trollius. Leaf shaped like a bowl of lotus flowers, orange and yellow flowers, can be used to decorate the balcony, windowsill, or placed on the indoor desk, a few racks to enjoy. Leaves alternate, with long-handled, round or near-reniform shield, edge with wavy obtuse angle, single leaf bud, blooming cultivation in summer and autumn, horticultural varieties are dwarf lotus, double flap, semi-double flap and mosaic and so on. The flower is native to Peru, Chile and other places, sexual warm, humid and sunny environment, growth temperature 18 ~ 24 °C, afraid of high temperatures in summer, more than 35 °C growth is inhibited, not cold, can tolerate short-term 0 °C low temperature. Northern often used as a two-year flower cultivation.
Nasturtium is commonly used for sowing and propagation, but also for tender cuttings. Usually sowed in March, flowering from July to August; planting in June, National Day flowering; planting in September, Spring Festival flowering; December sowing, "May 1" flowering. After sowing the seeds with warm water of 40-45°C overnight, they are sown in shallow pots filled with plain sand, covered with fine sand and about 1 cm thick. After sowing, they are kept moist on the sunny side, and the seedlings emerge in about 10 days. Seedlings are sown. 2 true leaves are planted on pots. Cuttings were carried out at room temperature in the spring at 13 - 16°C, cutting vines with 3-4 leaves, 10 cm long, leaving the top leaves, inserting into the sand, keeping moist, starting rooting in 10 days, and putting them on after 20 days. Pots.
The stems of the Nasturtium lanceolata must be erected. When the seedlings grow to three to four true leaves, they should be picked up and promote their multiple lateral branches. Before leaving the main branches and stout side branches, they need to be picked up and evenly tied to the shelves. , tie into a variety of decorative forms. After flowering, cut the old branch and wait for the new branch to bloom. For already-aged plants, when the temperature reaches 10°C or higher, the upper branches and leaves can be cut at the base, applied to the base fertilizer, placed in a greenhouse at about 7°C, and re-sprouted to form new plant clusters.
For the cultivation of nasturtium, sandy loam rich in organic matter is suitable, and the PH value is 5-6. Fertilizer is usually applied once every 3-4 weeks in the growth period, and each time after fertilization, it is necessary to loosen the soil and improve ventilation, so as to develop the root system. Seed China reminds you that nasturtium is so fragile that soil moisture is maintained at about 50%. During the growing season, watering should be done in a small, groundwater manner. Watering should be done 2-3 days in spring and autumn, watered in summer, and in the evening. Spray water on the leaves to maintain high humidity. Reduce watering after flowering to prevent shoots from prospering. The nasturtium is full of sunshine and is not tolerant to shade. In spring and autumn, it should be cultured in a sunny place. In summer, it should be shaded properly. In summer, it should be placed in a cool, ventilated place. In the middle of the month, the northern part of the room should be put in a sunny place. The room temperature should be maintained at 10--15. °C, appropriate control of fertilizer and water.
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