1, illumination: The growth of poinsettia needs sufficient illumination, its phototropism is strong, want bask in the sun all the year round.If the light is insufficient, the plant is easy to grow in vain, and it will also affect flowering.As a short-day plant, the flowering period can be advanced or postponed by controlling the illumination time, ensuring 8 hours of illumination every day, and flowering will occur in 40 days.
2. Temperature: Poinsettia likes warm climate and has poor cold resistance.In winter, we must pay attention to keeping warm, and keep the room temperature between 15-20 degrees Celsius.If the temperature is lower than 15 C, it will affect the color change of bracts and is not conducive to flower bud differentiation.The upper part of the plant can be covered with plastic bags to keep warm, but it should be removed regularly for ventilation.
3. Soil: Euphorbia pulcherrima is suitable for growing in loose and fertile soil. Good drainage can avoid root flooding and reduce the possibility of root rot.If you need to prepare potting soil, you can use garden soil, humus soil, humus soil and cake fertilizer mixed, according to the ratio of 3:3:3:1 to prepare the matrix, while adding a small amount of slag.
4, watering: Poinsettia drought tolerance is not strong, but also afraid of water wet, so according to the climate and growth conditions for watering.Growth period to keep the soil moist, but not water, flowering to reduce watering, more water is easy to fall.Water evenly, otherwise it will cause the leaves to yellow and fall off, and the branches will grow unevenly.
5. Fertilization: When potting Euphorbia pulcherrima, base fertilizer needs to be applied. Generally, organic fertilizer or water chestnut slices are selected.In the growth period, every 10-15 days to try a liquid fertilizer, can be decomposed sesame paste residue diluted 5 times after use.In autumn, compound fertilizer should be supplemented once a week for a month to promote the differentiation of flower buds.
6, pruning: Poinsettia planting three weeks later, it is necessary to give it pinching, which can promote the growth of lateral branches.Prune the diseased and weak branches during the dormant period, and if repotted, you can also prune the roots appropriately.In autumn, it needs to be pruned to make the plant smaller and improve its ornamental value.
