1, the adaptability of the growth of oleander is very high, basically as long as the temperature is enough, you can plant. The normal planting time of oil wheat cabbage is between the middle and late April and the middle of May or August and September. Winter planting, usually greenhouse cultivation mode.

2, the whole land should be deep plowing, base fertilizer should be sufficient, base fertilizer is usually based on farmyard manure, at the same time, you can also combine urea, potassium sulfate, diammonium phosphate and composite fertilizer stirred evenly after the application of good and then tilling.

3, germination temperature 15 to 20 ℃, higher than 25 ℃ or lower than 8 ℃ does not germinate, summer high temperature sowing need to germinate. The seeds will be sown in the watered soil surface, mulch about 0.5 to 1 cm, keep the soil moist, about l weeks germination. (Germination method: soak the seeds in water for 4.5 ~ 5.5 hours, slightly dry and then wrapped in a wet cloth, placed in a cool place to germinate, about 3/4 of the seeds dew white when sowing.)

4, seedling soil to keep moist can, summer sunshine to shade. True leaves 3 ~ 4 pieces when planting in the potting soil with sufficient basal fertilizer, plant spacing of about 10 ~ 15 cm, water thoroughly, about 1 week after normal management.

5, oatmeal seed germination after five or six days or so can be planted, plant spacing is generally 20cm, row spacing of 15cm.

6, oatmeal pests and diseases, rapid growth, fertilizer demand is greater, generally every 7 to 10 days or so spraying a nitrogen fertilizer-based rotting organic fertilizers, in order to promote the growth of the leaves, the harvest l weeks should be stopped before the fertilizer; oatmeal like Cool, slightly cold and not heat-resistant, leaf growth temperature of 11 ~ 18 ℃, the temperature is too high to affect the growth or early flowering; oil wheat cabbage like moist, the growth of the peak period requires to give sufficient water, usually watering 1 time a day, if necessary, watering in the morning and evening, so as not to affect the quality of the leaves.

7, about a month after planting, or from about 15 leaves can begin to harvest, usually in the morning, will be fully grown, thick and crisp green leaves can be broken off by hand. After harvesting, when the wound is dry, you can apply 1 time of rotted organic fertilizer to promote the sprouting of new leaves, and after a period of time, you can harvest again.