When is the best time to sow petunia?

Petunia

Since the memory of the editor, I am very familiar with the petunia, because there are many petunias in my hometown. I remember that I didn't understand why it was called petunia at that time. It was obviously the trumpet flower, but later I knew that the trumpet flower was its alias, so the editor was very impressed by the petunia. The petunia known by the editor has strong vitality, so many flower friends around them sow petunia by themselves, but it is an uncertain decision when they buy petunia, so let's introduce the best sowing time for petunia.

When talking about when to sow Petunia, we must talk about the germination conditions of Petunia. The optimum temperature for germination of Petunia is about 18-25 ℃, and the suitable temperature for growth is 22-34 ℃. It usually takes 3-7 days to germinate. If the sowing environment of Huayou can not meet this requirement, be careful to sow.

First, Petunia spring sowing

The warmer temperature in spring is a good time to sow seeds. Petunia sown in spring can usually see flowers in summer. Of course, if you have the conditions, you can advance the sowing date. Spring sowing is the best sowing time.

Petunia sowed in autumn

If the petunia sown in autumn go well, you can see flowers next spring, but be careful where there is no heating, because a smooth winter is a top priority.

Some flower friends say that whether I can sow seeds in summer or not, of course, is not enough, just like wintering. A smooth summer is also a test for dwarf cattle. Now, because most of the sowing conditions are superior to the price, the sowing time of seeds is often much looser, depending more on the environment and conditions.

Petunia sowing time, Petunia sowing methods and items

Petunia is a very beautiful potted flower plant, many flower friends will raise, and sow their own petunia. But petunia is usually sown through seeds, which is easy to burst, so when is the better time to sow petunia, and what matters need to be paid attention to in the sowing process? please read the following article about the sowing method and time of petunia.

Petunia sowing time

Petunia is a kind of plant that likes warmth and sunshine, is not tolerant to frost, and is afraid of rain and waterlogging. The suitable temperature for its growth is 13-18 ℃. The suitable temperature for germination of dwarf cattle is about 18-25 ℃, so it is necessary to consider that this environmental condition is very suitable for sowing. Under normal light conditions, it takes about 100 days from sowing to flowering.

1. Sowing in spring

Although the temperature begins to warm up in spring, petunia is easy to grow in vain because of more Rain Water and less sun in early spring, so the best sowing time is late spring and early summer, that is, June-July.

2. Sowing in autumn

The time of sowing in autumn is mainly from October to November, and under normal conditions, petunia takes about 100 days from sowing to flowering, so flowers can usually be seen next spring, but for flower friends who live in places where there is no heating, sowing needs to be cautious at this time, because it is an arduous task to ensure a smooth winter for petunia.

Sowing method according to Petunia 1. Temperature condition

The suitable temperature to ensure the smooth germination of Petunia is about 18-25 ℃, and the suitable temperature for further seed growth is about 22-34 ℃. Under normal conditions, it can germinate in 3-7 days. Flower friends had better create such a temperature environment for petunia sowing, otherwise it will be unknown whether a healthy petunia can be successfully bred.

2. Soil conditions

In the selection of soil during sowing, the mixed soil of culture soil, rotten leaf soil and fine sand after high temperature disinfection can be used. After sowing, there is no need to cover the soil, as long as a light pressure can make the seed germinate smoothly, about 5-7 days.

3. Watering and sunshine

Dwarf cows like to drink water, and when they are full, they are not afraid of the sun! But remember to bask in the sun! If you don't get enough sun, you will test your topping skills if you want to become a bouquet. When you sow in autumn, the four true leaves of the dwarf can be illuminated all day long, and the premise is still enough water. My practice is to throw it directly on the terrace from the very beginning of germination, but after all, the temperature in autumn is not high, and there is enough water in the bottom box of the seedling box all the time.

4. Water condition

The seedling soil can be watered thoroughly before sowing, and the wetness of the soil should be ensured after sowing, so as not to be too dry and affect normal germination.

5. Fertilize and give adequate nutrition

Petunia likes to be fattened, and there is a big difference between whether or not to use fertilizer. My experience is that after 4 true leaves are produced, to the stage of pseudo-planting (the small grid of the nursery box is full of roots), 2000 times of Biwang is fertilized once a week. From pseudo-planting to colonization stage, 1500 times of Biwang is fertilized once a week, and a little slow-release fertilizer can be added appropriately when pseudo-planting. When planting to the full stage, Biwang was fertilized 1000 to 1500 times twice a week (the concentration increased with the plant size). Add sufficient base fertilizer when planting.

The planting method of petunia how to grow petunia?

Bel canto series petunia, is a great breed, is a large number of branches covered with gorgeous flowers, rich colors, blue, coral, light purple, pink morning light, fuchsia, white, ice lavender and salmon red. It is suitable for any garden setting with strong creeping, and it is also very suitable for the application of hanging basket and windowsill flower decoration.

Good heat resistance, slightly cold resistance, quick recovery after rain. Because the bel canto series is not very sensitive to sunshine length, which determines its extensive adaptability. When cultivated in different latitudes, the whole plant shows compact and excellent branching, and the ornamental time is long, generally from April to 10 portions. It can blossom continuously in warm areas until November. It is doomed that bel canto series is an excellent new variety of hanging petunia.

Sowing and raising seedlings: the seeds of Petunia are about 10000 per gram. Under the condition of protected areas in the middle and lower reaches of the Yangtze River, they can be sown and raise seedlings all the year round, but considering the limitation of flowering conditions and the effect of high temperature on flowering, the general sowing time is between October and November and June to July. Loose artificial medium should be used for sowing. If ordinary seeds are used, bed sowing and box sowing seedlings are generally used. Hole plate seedlings must be pelleted seeds. 288 or 128 hole plates can be used for family pot cultivation and garden planting. Seedling blocks imported from Norway can be used for best matching with seedling boxes. Install the medium before sowing, pour water thoroughly, sow the seeds again, and wet the seeds with fine spray after sowing. Petunia seeds are small, sowing can not cover any medium, otherwise it will affect seed germination. The pH value of the medium is 5.8-6.2 and the EC value is 0.5-0.75. After disinfection, seedling soil or peat soil is generally used to meet this function. After sowing, the medium temperature was kept at 22: 25 ℃, and seedlings emerged at 5: 10 days.

Note: due to the long seedling stage of petunia, low temperature, dry or wet water, excessive fertilization and so on, it is easy to cause rigid seedlings.

The first stage:

The radicle was exhibited 3-5 days after sowing, the seedling medium must be kept moist at the initial stage, no fertilization was needed, and the temperature was kept at 22-24 ℃. The light at this stage is beneficial to the seed germination of Petunia. Therefore, if sowing in the germination chamber, it is best to use the light of 1000lux to supplement the light. If seedlings are raised under ordinary facilities, two layers of 90% shading net should be added to ensure the humidity during seed germination. Pay attention to indoor seedlings, put in a bright place, do not shine in the sun.

The second stage:

Continue to maintain proper humidity of the medium, but can not be too dry, too dry is easy to produce "back to the seedling"; also can not be too wet, too wet affects the development of roots, easy to produce diseases. After the emergence of the first pair of true leaves, you can begin to fertilize, generally using nitrogen fertilizer or 20-Mel-10-Mel-20 water-soluble fertilizer, the concentration should be controlled at about 50ppm, not too high, so as to avoid fertilizer damage. At this stage, attention should be paid to ventilation, and the seedlings can also be seen gradually. The use of organic fertilizer is recommended for family potted plants, which can improve soil structure and have many benefits.

The third stage:

Two or three pairs of true leaves have appeared in the seedlings and have grown rapidly since then. The medium temperature can be reduced to about 18: 20 ℃, every 7 to 10 days, 0.1% urea or 20-10-20 water-soluble fertilizer (this figure indicates the ratio of nitrogen, phosphorus and potassium) and 0.1% compound fertilizer (compound fertilizer with a higher content of N and K, but relatively lower requirements for P) or water-soluble fertilizer with a N-P-K of 15 Mel 15 can be applied every 7 to 10 days. At this stage, attention should still be paid to ventilation to prevent diseases, and chlorothalonil or methyl topiramate (800-1000 times) should be sprayed every other week or so.

The fourth stage:

At this stage, the root system has been well formed, there are three pairs of true leaves, temperature, humidity, fertilization requirements are the same as the third stage, we should still pay attention to ventilation and disease prevention.

In addition, the propagation method can not only seed propagation, but also cuttage propagation. Cuttage propagation and indoor cultivation can be carried out all year round. After anthesis, the germinated tip shoots are cut and 10 cm long, inserted into the sand bed, the soil temperature is 20-25 ℃, rooting takes place 15-20 days after cutting, and can be transplanted into the pot in 30 days.

Transplant / upper basin: raise seedlings with 288-hole seedling trays and move them directly into a 10-12 cm diameter nutrition bowl. It can also be planted on the seedling bed and then moved into the nutrition bowl. Petunia recovers slowly after transplantation, so attention should be paid to carrying as much soil as possible.

Light regulation: petunia is a positive plant, growth, flowering need sufficient sunlight, summer production is more resistant to high temperature, generally only a few days after transplantation to shade, slow seedlings, there is no need for shade in the whole growing period. Very suitable light can promote flowering and increase the number of flowers.

Cultivation and management: watering always follows the principle of no dry watering and watering thoroughly. Potted flowers are produced in summer, thin fertilizer should be applied frequently in the early stage of seedling growth, and the content of N and K is high and P is appropriately low. Urea can be selected for N fertilizer, while N-P-K for compound fertilizer is 15-15-15 or high in N and K, and the concentration is controlled at 0.1-0.2%. Water-soluble fertilizers generally choose 20-10-20 and 14-10-14, with a concentration of too high in 50~100ppm, which is easy to cause fertilizer damage in high temperature season. Potted flowers are produced in winter, compound fertilizer is applied frequently from March to April, and N fertilizer is applied properly according to the growth situation. In the case of too dry plants will be relatively thin, can be adjusted through fertilizer and water management can be restored; but typhoon or storm damage to the plant, it is more difficult to recover.

Pruning and finishing: promoting branches can increase the number of flowering, and can be arranged in larger plants with irregular plant types. It can be pruned at the top of the branch so that it is easy to add a layer of branch, usually more than 10 days before the planned flowering. If the plant that has been ornamented for a long time is too large, keep the sound plant of 1 stroke 3 for pruning. Under suitable conditions, the recovery time takes 20 days.

The above is the planting and conservation methods of petunia provided by the succulent flower bed. I hope it can be helpful to you. You are welcome to continue to pay attention to the succulent flower bed and learn more about the maintenance of herbaceous flowers.