Carnations easily die in summer, and the environment is the main reason

If you have experience growing carnations, you will surely notice that more carnation seedlings die in the hot summer. What exactly is the reason? In fact, there are many reasons why carnations die in large numbers in hot summer. The editor will analyze for you the reasons caused by the external environment why so many carnations die in summer.

Carnation

After carnation cuttings are inserted into the seedbed, good conditions need to be created artificially to make them full of vitality, produce root primordia as soon as possible, and sprout healthy root systems. For seedlings planted in the field, although their root systems can absorb water and nutrients to a certain extent and maintain the vitality of the plant, under greatly different living conditions, the seedlings cannot adapt to the external environment in a short time, especially seedlings with slightly poorer seedling quality.

In addition, after June the temperature rises quickly, and the continuous plastic bamboo sheds feel like scorching summer heat. The temperature exceeds 30°C, and the weather often brings rainstorms and sudden clear hot weather, making the low and simple bamboo sheds like steamers, stuffy, humid, and poorly ventilated. Such weather forces the seedlings to transpire more and respire more, causing loss of nutrients in the plant. In addition, too much watering at the seedling stage, high soil water content, and low oxygen content mean new roots hardly grow, old roots have weak absorption, and an unfavorable environment for seedling growth is artificially created, causing more seedling deaths.

Environmental requirements for potted carnations Potted carnation seedling-raising process

Every Mother's Day, carnations in flower shops are sold out. So why not consider growing a pot yourself? How do you grow potted carnations well? For potted carnations, you still need to pay attention to temperature regulation, light selection, watering principles, moderate fertilization, and so on. Let's take a specific look at how to grow potted carnations.

1. Environmental requirements for potted carnations

1. Temperature

It prefers cool conditions. The optimum temperature for growth is 19°C to 21°C, and the night temperature is preferably 9°C to 10°C. If the day-night temperature difference is too high, the leaves become narrow, the flowers small, and the branching weak. In summer, if the temperature is higher than 35°C, or in winter lower than 9°C, growth becomes slow or even stops or appears abnormal.

2. Light

It prefers sunlight. Apart from the seedling stage and full flowering stage, keep the light as full as possible. Carnation is a cumulative long-day plant. The longer the accumulated sunshine time, the more it promotes flower bud differentiation, thereby advancing flowering, increasing flower quantity, and improving flowering uniformity. In winter, under low temperature and weak light and on consecutive rainy days, artificial supplemental lighting can be added appropriately. If kept under weak light for a long time, the leaves, branches, and flower stems will become thin and weak and easy to break, and various diseases will be induced.

3. Master the watering principle

Why do some potted carnations develop root rot? Potted plants share a common trait: they like a ventilated, breathable, and well-drained environment. Overwatering easily causes root rot, so the number of waterings must be controlled well. Avoid water accumulation. In the rainy season, pay attention to loosening the soil and draining water. Apart from timely watering during the peak growth and flowering seasons, water less at ordinary times, just enough to keep the soil moist. If conditions permit, the air humidity can be kept at around 75%. (For those who have a humidifier at home, this should not be difficult to control.) Once again, a reminder of the carnation watering principle: do not water if the pot surface is not dry; when watering, water thoroughly; avoid waterlogging.

4. Pay attention to fertilization

If you choose to grow carnation plants, pay attention to choosing a slightly alkaline clay soil that is well drained, rich in humus, and has good fertilizer retention. Before planting, first apply sufficient base fertilizer containing potassium, calcium, nitrogen, and phosphorus at the bottom of the pot (or apply sufficient baked fertilizer and bone meal). During the growth period, continue to apply liquid fertilizer. Generally, apply a fully decomposed dilute fertilizer solution once every 10 days or so, and apply one topdressing after flower harvesting. Do not fertilize during the high-temperature period in summer, otherwise the plants are prone to withering and death.

5. Propagation method

Carnation is most suitable for cutting propagation. The time for cuttings is not limited. Apart from excessively hot weather, it can be propagated in other seasons. Among them, cuttings in early February have the highest survival rate.

2. Potted carnation seedling-raising process

Taking a growth cycle of 140 days as an example, if it is required to be marketed 25 days before a certain holiday, then sowing must be done 180 days before the holiday (that is, growth cycle + 15 days + 25 days). Summer sowing and autumn sowing easily show early buds, so pay attention to pinching and bud removal. A fertile, loose substrate rich in organic matter is needed. It can be prepared with leaf mold, domestic peat, and perlite in a ratio of 4:2:1. Medium humidity: when a finger lightly touches the substrate surface, it is moist but no water overflows. In addition, pH and EC values should also be measured, with the standard being pH 6.0 to 6.5 and EC 0.5 to 0.75.

Sow 3 grams of seeds per square meter, covering with soil to a depth of about 0.3 cm. Germination does not require light. After covering the seeds, cover with a shade net and remove it after emergence. The suitable temperature for germination is 15°C to 20°C. Seedlings emerge 5 to 7 days after sowing, and after emergence the light should be 10,000 lux to 12,000 lux.

Start topdressing when the heart breaks, using urea at a concentration of 2.5%. From 14 to 21 days after sowing is the true leaf growth and development stage. Keep the seedbed at medium humidity, 18°C to 20°C during the day and 18°C at night. The fertilization concentration is 0.08% to 0.12%. Light needs to be increased, and fungicide should be sprayed. Special note: before sowing, first water the seedbed substrate thoroughly to facilitate emergence. If there is not enough water, be sure to water thoroughly after sowing when the shade net is covered.

The soil for pricking out seedlings should be rich in organic matter, loose, and well drained. It can use garden soil (disinfected) + decomposed sawdust + domestic peat + perlite in a ratio of 9:3:1:0.5. pH 6.0 to 6.3, EC 1.0 to 1.5. 2. The pricking-out container is a 10 cm x 8 cm (diameter x height) plastic pot.

The above is the relevant introduction in this article. I believe after reading it you also have a simple understanding of this. If needed, you can continue to follow No.1 Home Network to learn more information.

Carnation cultivation methods 2013 edition

Carnation originated in the Mediterranean region and has a cultivation history of more than a thousand years. There are three types of carnations: one is the border type, with short plants, short pedicels, and flowering in spring and summer; another is the Malmaison type, which is cold-resistant, easy to cultivate in open fields, and has many flowers; and another is the ever-flowering type, with tall plants, strong flower stems, large flowers, and double petals,

mostly cultivated in greenhouses. In addition, varieties can also be divided by flower color, such as bright red varieties, purple varieties, and so on.

Carnation likes a cool summer, slightly dry conditions, and a warm winter with abundant sunlight. It is not cold-resistant and fears high temperatures and excessive rain. The suitable temperature for growth is 15° to 20°.

For potted carnations, generally choose a tall pot with a relatively large inner diameter. For the potting soil, use a culture soil prepared with garden soil, peat soil, leaf mold, and sand in a ratio of 3:3:2:2. Before planting, first apply sufficient base fertilizer containing potassium, calcium, nitrogen, and phosphorus at the bottom of the pot. When transplanting seedlings, they should be carried with native soil, with three plants per pot. The planting depth should be slightly shallower than the original seedlings. After planting, water thoroughly and place in a cool place to recover. After they survive, gradually move them into sunlight for care. Ensure 6 to 8 hours of light every day.

In midsummer, carnations are in a semi-dormant state. At this time, move the potted plants to a well-ventilated environment, and pay attention to shading them to avoid scorching sunlight. Generally, after transplanting, if water and fertilizer are suitable, the temperature is appropriate, and light is sufficient, they can bloom within three months.

’Production soil selection

Carnation is suitable for planting in calcareous soil rich in humus and well drained.

°Light conditions

Liking strong light is one of the important characteristics of carnation. Whether potted for summering or forced cultivation in a greenhouse, sufficient light is needed, and they should be placed in a sunny position exposed to direct sunlight.

, Moisture

During the growth and development period of carnation, watering should follow the principle of alternating dry and wet, keeping the potting soil moist but on the dry side. Especially in the high-temperature season in summer and at low temperatures in winter, carnation is in a semi-dormant state, and watering should follow the principle of alternating dry and wet even more, keeping the potting soil on the dry side to prevent excessive watering from making the potting soil too wet and causing root rot.

°Fertilization time

Carnation likes fertilizer. In addition to applying base fertilizer when potting, 7-10 days after potting the new shoots begin to grow. At this time, a dilute cake fertilizer solution, bone meal, or sauce residue fertilizer can be applied alternately about every 10 days. Because carnation has a relatively large demand for potassium fertilizer, during its growth and development period it can be given °2 times a month of potassium chloride solution (1,000 - 1,500 times) or 0.29° to 0.3° potassium dihydrogen phosphate solution.

It should be noted that carnation should not be given concentrated fertilizer. When fertilizing, do not splash the fertilizer liquid onto the leaves and stems. Do not fertilize when the temperature is high or low.

>Propagation

Carnation can be propagated by sowing, layering, or cuttings, but cutting propagation is most suitable.

Cuttings: The time is not limited. Apart from excessively hot seasons, it can be propagated in other seasons. Among them, cuttings from late March to early April have the highest survival rate. For cuttings, choose mother plants with excellent varieties, robust growth, uniform flowering, few nodes, good quality, and no pests or diseases. Peel off (preferably do not use scissors to cut) well-developed side branches 6-9 cm long as cuttings. When peeling off, peel together with the leaves, but be careful not to damage the mother plant.

The cutting substrate uses garden soil mixed with rice husk ash. Before inserting the shoots, pour water over it first, then insert them into the soil to a depth of 1/3 to 1/2 of the cutting. Water immediately after insertion and cover for shade. Frequently spray water on the leaves to keep the cutting substrate moist. When the temperature is ⑴” to °°, rooting can occur in about 20 days, and planting out can be done after one month.

Layering: Carry out in August-September. Select a long branch, use a knife to cut open the bark on the part touching the ground, and press soil over it. After 5-6 weeks, it can root and survive.