Matters needing attention in wrinkled leaf cold water culture:

1. Moisture:

Usually maintain soil moisture, dry and wet, do not basin soil stagnant water.

2. Temperature:

The cold spray of wrinkled leaves is more hardy, it will not be frozen at room temperature no less than 6 ℃ in winter, and it begins to grow above 14 ℃ in winter.

3. Fertilization:

Wrinkled leaf cold water peanuts are irrigated with 28% or 37% nitrogen liquid fertilizer for a long time for about two weeks to make the plants strong. After autumn, increase the application of phosphorus and potassium fertilizer to strengthen the stem and prevent lodging.

4. Soil:

Wrinkled leaf cold water flowers like loose and well-drained soil, which can be mixed with loam, river sand and rotten leaf soil.

5. Diseases and insect pests:

Diseases such as shell insects and aphids are easy to occur in summer high temperature season, which should be scraped or washed with soapy water in time, and can be sprayed and prevented in serious cases. In addition, poor management, there will be leaf spot disease, should be timely prevention and control. The harm of common leaf spot disease can be prevented by spraying 200 times Bordeaux liquid. The basin soil is too wet, which is easy to produce root rot, so it can be irrigated with 1000 times solution of topiramate. When root nodule nematodes are found, 3% carbofuran can be applied to control. It is harmful to scale insects and is sprayed with 1000 times of omethoate.

6. Place:

Furnished in the study and bedroom, elegant and pleasant.

Cultivation and pest control of cold water flower also known as nettle nettle and snow grass. Urticaceae, cold water flower genus. Originated in Vietnam, mostly distributed in the tropics. Morphological characteristics: perennial evergreen herbs, plant height 15cm-40cm. Leaves opposite, elliptic, 4-8 cm long. The upper part of the leaf margin is sparsely obtusely serrated, and the lower part is often entire. The background color of the leaf is green, there are three longitudinal stripes of the main vein, the vein part is slightly sunken. The main veins are mixed with silvery white markings, the stripes are slightly convex, and the leaves are green on the back. The common cultivated varieties are: dense cold water spray (P. C. cv. Nana): the branches and leaves are dense, and the plant is relatively short, less than 20 cm. The common cultivated species of the same genus are: wrinkled leaf cold spray: leaf cross-shaped opposite, leaf vein brownish red, leaf surface yellowish green, surface wrinkled, margin serrated, leaf vein tea-brown, leaf color and markings very similar to iron cross begonia. Bubble leaf cold spray: the plant is creeping and trailing, the branches are thin and many, and the whole plant is covered with short and fine villi. Leaves round, base cordate, thin, leaf margin semicircular serrated, interveined mesophyll raised. Silver leaf cold spray: stem erect, much branched. The petiole is short, the leaf is ovate-lanceolate, dark green, obtusely serrated, and there is a beautiful silver-white strip in the middle of the leaf, from the leaf base to the top. Habits: like warm, moist and semi-overcast environment, avoid direct sunlight, have strong negative tolerance. It is resistant to both fertilizer and barren, and likes to be born in loam soil rich in organic matter. Not resistant to drought, has a certain cold tolerance, can withstand short-term low temperature of 5 ℃. Cultivation management: cold water is not strict to the soil, ordinary garden soil and sand can be used as cultivation soil. In order to make the plant grow vigorously and the branches and leaves are thick green, 5 parts of rotten leaf soil or peat soil, 3 parts of perlite and 2 parts of river sand can be mixed with a small amount of base fertilizer and preserved in warm and humid climate. During the growth period, pay attention to timely watering, keep the basin soil moist, increase the watering times in hot summer, can be watered once a day, maintain moderate humidity of the basin soil, and often water the leaf surface and the ground to maintain sufficient air humidity. Reduce the number of watering in autumn and winter, otherwise black spots may appear on the leaves. Watering should grasp the principle of "dry and wet" and avoid stagnant water. In the growing season, rarefied liquid fertilizer can be irrigated once every 3 weeks, but nitrogen fertilizer should not be applied. Granular fertilizer can also be used, but do not let the fertilizer touch the foliar surface, it is best to sprinkle the foliar surface with water after fertilization to wash away the fertilizer that accidentally fell into the foliar surface. Summer should be kept in the shade to avoid strong direct light. But if the light is too dark, the color of the leaves will fade. In the sparse shade environment, the leaves are clear white and green, the internodes are short and compact, and the leaves are bright and shiny. In all environments, the internodes are often overgrown, the stems are soft, lodging easily, and the plant shape is loose. In order to enhance the pot ornamental effect of cold splash, the growing period should be pruned regularly to promote its branching and maintain full plant shape. If you want to dwarf the plant, you can prune it properly or pick the heart for 2 or 3 times. Be careful not to prune too much, otherwise it will easily lead to many and small leaves, affecting the aesthetics. When the plant grows to about 40 cm, the stem begins to lodge outward. It should be cut short in time to promote the sprouting of the lower axillary buds and make the branches dense and compact. It can also be planted with 3 or 5 plants, full of green. The suitable temperature for cold water spray growth is 18-22 ℃, and the overwintering temperature should not be lower than 7 ℃. Plant growth is very fast, it is appropriate to change the basin in April every year, the basin should be slightly larger, but slightly shallow, good drainage. Potted plants should be renewed every 2 ~ 3 years. Culture: generally use cuttage culture, can also be used ramet culture. 1. Cutting can be carried out in both spring and summer. It is not suitable for cutting in high temperature season in summer, but it grows slowly in winter. Select the growing and full branches, cut the stem tip 5cm long as cuttings, retain a few leaves at the end, and insert them directly into the sand bed with vermiculite or plain sand as the matrix, or cut into the basin soil mixed with peat and soil, the depth should not exceed 2 cm. Put it in a semi-shade place, keep the soil temperature at 18-20 ℃, spray water with a spray can when it is dry, take root in about 2-3 weeks, and transplant or basin after 1-2 months. 2. Ramet culture: the clump of cold water is very strong, so the whole pile can be divided into several parts and put on the basin respectively. At the same time, the old stem is cut short, and the basal 2-3 nodes of the stem are preserved. After survival, the axillary buds can germinate quickly and produce new lateral branches. Diseases and insect pests: diseases such as shell insects and aphids are easy to occur in summer high temperature season, which should be scraped or washed with soapy water in time, and can be sprayed and controlled in serious cases. In addition, poor management, there will be leaf spot disease, should be timely prevention and control. How to raise mirror grass? Culture methods and matters needing attention of mirror grass

Rabdosia angustifolia is a perennial succulent herb of Urticaceae, which is named because its leaves are mirror-like. Because of its peculiar leaf shape and beautiful posture, it is very suitable for planting indoors and has high ornamental value, so it is a kind of foliage plant worth popularizing. So, how to raise mirror grass? The breeding methods and matters needing attention of mirror grass are introduced as follows.

Picture: mirror grass

I. the culture method of mirror grass.

1. Soil: the pot soil of mirror grass can be mixed with rotten leaf soil, garden soil and a little river sand, furnace ash and bone powder. It is better to use loose and fertile sandy loam with good drainage and rich in humus. Family cultivation can be mixed with 3 parts of rotten leaf soil, 3 parts of garden soil, 2 parts of river sand or furnace ash and 1 part of mature organic fertilizer. When planting, there should be well-drained decaying soil mixed with sand, and tile should be used to pad the bottom of the basin to facilitate drainage.

two。 Light: mirror grass is a shade-tolerant plant, but also like light, not strong light, it is appropriate to scatter light, light is too strong or too shady, the brightness of leaves is easy to fade or disappear, when it is too shaded, the leaves are also easy to become thinner, petioles become longer and cause leaves to droop. When the temperature is low in winter, full sun maintenance can be given.

3. Temperature: the suitable growth temperature of mirror grass is between 15 and 20 ℃, and it should be kept above 7 ℃ in winter, otherwise it is easy to lose leaves or even die from frost injury. When the summer temperature is higher than 30 ℃, the growth will stagnate and the leaves will fall off easily. In particular, it should be noted that the sudden drop in temperature will cause leaf and stem discoloration and partial shedding. If the leaves fall off from the freezing injury, but if the stem is not damaged, it can be maintained and managed according to the routine overwintering, and the leaves can be released again in spring. Don't shine directly in the strong sun in summer.

Picture: mirror grass

4. Humidity: mirror grass likes water and is afraid of waterlogging, it can keep the basin soil moist, drought is easy to wilt and droop, serious leaves appear wrinkles or withered yellow, death. Not suitable for dry environment, the growth environment to maintain a high air humidity, often spray water to the growth environment and leaves to humidify, in order to make it grow well.

5. Watering: the watering times of mirror grass should be controlled when the winter temperature is lower than 12 ℃, otherwise it is easy to rot and is not conducive to overwintering. Always keep the basin soil moist, but avoid stagnant water to prevent leaves from discoloration, withering and even stem rot. Watering to see dry and wet, in order to maintain air humidity, can often spray to the leaf. During the whole growth period, the basin mainly remains moist, and it can be relatively dry in winter, but the drying phenomenon must not occur, otherwise the leaves are easy to wither and black, and water is often sprayed to and around the leaves in the dry season, resulting in a humid small environment.

6. Fertilization: mirror grass is not resistant to thick fertilizer and large fertilizer, so it should be carried out a few times, and thin fertilizer irrigation is the most suitable. Fertilization should be stopped when the temperature is above 28 ℃ or below 12 ℃, and dilute liquid fertilizer should be applied once every half month in the growing season. The whole spring and summer is a vigorous time for the growth of mirror grass, it is necessary to strengthen fertilizer and water management, and often irrigate or foliar spray with 0.1-0.5% potassium dihydrogen phosphate solution, irregularly supplement a small amount of nitrogen fertilizer during spring, and apply little or no nitrogen fertilizer in summer as far as possible. Thin liquid fertilizer is applied once every half a month in the growing season, but it should be noted that too much nitrogen fertilizer will cause excessive growth of leaves, plant lodging, thick fertilizer and raw fertilizer will cause rotting roots and even death.

Picture: mirror grass

II. Matters needing attention in mirror grass culture

In the process of mirror grass culture, attention should be paid to the prevention and control of diseases and insect pests. Speculum grass is often harmed by anthracnose and shell insects. Anthrax can be sprayed with anthrax Fumei and carbendazim, while shell insects can be sprayed with parathion and chlorpyrifos. Easy to infect leaf spot, can be sprayed with 50% carbendazim diluted 600 times, once every ten days, 3 times in a row. If cotton blowing scale is harmful, the leaves can be sprayed with 1000 times diluted solution of omethoate.

[editor's conclusion] Mirror grass likes a warm and humid environment, which is very suitable for potting in the family. The above introduces the breeding methods and matters needing attention of mirror grass, hoping to help you!