Culture and maintenance skills of zinnia

Temperature: hundred-day grass likes to warm to the sun, can not bear the heat, high temperature and cold, the suitable growth temperature is 18-20 degrees Celsius during the day and 15-16 degrees Celsius at night. It grows especially fast in summer.

Moisture: due to the high demand for light, water is easy to evaporate, so it is necessary to maintain proper humidity and can be watered every day in summer.

Rizhao: the flowering period can be controlled by regulating the length of sunshine. Because it is a relatively short-day plant, the sunshine is longer than 14 hours, the flowering is delayed, it takes 70 days from sowing to flowering, and there are more tongue-shaped flowers; if the sunshine is less than 12 hours, the flowering is earlier, and it takes only 60 days from sowing to flowering, but more tubular flowers. In addition, the flowering period can also be controlled by adjusting the sowing time and coring time.

Prevention of overgrowth: zinnia seedlings are very easy to grow in the later stage of growth, in order to prevent overgrowth, the method is to properly reduce the temperature, to ensure adequate nutritional area, to increase plant spacing, and third, to pick out the heart to promote axillary bud growth. It is carried out when the plant height is about 10 cm, leaving 2-4 pairs of true leaves to pick the heart. If the seedlings are not only grown in the open field, you should also pick the heart in order to limit the height. Strong wind was released 7 days before planting to adapt to the environmental conditions in the open field.

Lodging resistance: in addition, the selection of high-type varieties as cut flowers is different from courtyard flowers in usual maintenance and management, and special attention should be paid to lodging resistance in the process of cultivation.

What about the small yellow flowers of clover and leaf grass?

The leaf head flower may be caused by the following reasons:

First, the position is too shady, as long as it is moved to a place with sufficient light

Second, if it is rainy or overwatered, the zinnia is more resistant to drought, and the basin soil should not be too wet, otherwise the plant is weak, the internodes elongate and the flowers become smaller. The solution is to reduce the amount of watering and make the pot soil dry.

The hundred-day grass is afraid of high temperature. when it is hot in summer, it should be placed in a cool and ventilated place and the spray should cool down.

Applying phosphate fertilizer twice before flowering in April and May can ensure that the flowers are large and bright.

How to prune and restrain the height of potted zinnia?

When the plant height is about 10 cm after potting, the heart is removed. During the growing period, the heart can be removed for 2 or 3 times to control the plant height and multiple lateral branches to form a plump plant shape. After coring, dwarfing agent can be applied when axillary buds grow to 3 cm. After the flowers bloom and fail, re-cut the tall plants to let them sprout new flower branches.

Tips on the cultivation of zinnia

Indoor sowing in early February can blossom ahead of time. After sowing, the room temperature was kept at about 18C, and it was transplanted once in mid-late March, planted in a medium-caliber basin at the beginning of April, and could blossom in late April.