The breeding method of double petunia why doesn't the flower blossom

Double petunia, this flower has many layers, but also has many colors, is super good-looking, to see what is the breeding method of double petunia? What if the double petunia long flower does not blossom:

Breeding method of double petunia:

There are two propagation methods of double petunia: sowing and cutting, but the more commonly used propagation method is cutting.

Sowing: 1. Prepare a flowerpot with a diameter of about 20 centimeters, sow directly without covering the soil, do not use watering, it is best to spray water with a spray can, so that you can avoid brewing seeds.

2. The general temperature is about 20 degrees, and it can sprout in a week.

3. Double petunia should be maintained in high temperature and dry environment, and the drainage of basin soil must be good.

Cutting: 1. Cut a sturdy branch about 10cm (cut from below the base of the node, which is beneficial to healing and rooting). The cut should be flat.

2. The leaves on the branches leave only the upper 2-3 leaves, and the rest are cut off.

3. Cuttings with plain sandy soil or cultivated soil, with the depth of cuttings length from 1 stroke 2 to 1 hammer 3, after cutting, put them in the environment of shelter from wind and shade, and put them indoors after autumn. After 20 ℃, they can take root in about 15 days.

Why the long flower of double petunia doesn't blossom:

The main results are as follows: 1. in order to make the plant shape of double petals compact and the petals overlap, it is necessary to pick the heart many times from the seedling stage to promote its multi-branching.

2. The soil for planting petunia can not apply too much nitrogen fertilizer, but can apply more phosphorus and potassium fertilizer. Applying more phosphorus and potassium fertilizer during flowering can prolong the flowering period and make the flowers more luxuriant.

3. There can be no lack of water during flowering, otherwise, the flowers will be few and not colorful.

4. Double petunia is a kind of plant that likes sunlight very much, so it is necessary to put double petunia in a sunny environment. If there are few leaves and flowers on which side, you can turn that side to the sun.

This is the end of the breeding method of double petunia. If it doesn't blossom, look for these reasons.

Double petunia how to hit the top, double petunia topping method (big picture)

The double petunia plant is short with neat plant type and compact branches. The flowers are gorgeous, with five colors of red, pink, blue, white and rose. it takes about 90 days from planting to flowering. Topping is the most important step in the process of planting double petunia. Many beginners do not pay attention to topping and the final flowering shape is very ugly. The following editor will introduce how to top double petunia and how to top double petunia.

Topping method of double petunia

The upright varieties should hit the top more ruthlessly, the first topping generally retain 4-6 leaves, hanging varieties retain 6-8 leaves, and the treatment of lateral branches is the same. In the meantime, pay attention to its branching condition, generally when the weather is relatively hot, the branching is poor, flowering instead of branching. The branching ability is better in winter, and it can basically send out new branches from the axils of leaves after topping. Do not hit the top too late, it is too late to delay growth, according to the situation of the seedling to determine to leave a few leaves, the main branch and side branches are treated the same.

If double petunia appears prosperous growth phenomenon, mainly because of little sun, the windowsill or balcony with less sunshine in winter is most likely to cause prosperous growth. The leaves of the seedlings are long, pinch off some more when topping, and just keep 4 leaves. For seedlings that are growing well, 6 leaves are generally retained when topping. Compared with the two kinds of seedlings with different growth, the leaf spacing of the seedlings with vigorous growth was significantly longer than that of the normal seedlings. The advantage of short leaf spacing is that the branches will be denser, and eventually they will look fuller and bloom more.

The timing of topping is usually as big as the following picture:

1. Before hitting the top

two。 After hitting the top

3. Before the topping of the lateral branch

4. After the lateral branch is topped

5. After that, the topping treatment should be carried out many times according to the growth of the lateral branches.

The above is how to top double petunia, double petunia topping method, a large number of double petunia, flower stem 8: 10, growth adaptation temperature of 20: 35 ℃, infinite flowering, outstanding performance. Exuberant growth, consistent florescence, strong adaptability. Good heat and cold resistance, strong disease resistance, rain and waterlogging resistance. Suitable for shelf sales, garden planting, flower bed flower stem application, landscaping and so on.

Planting methods and matters needing attention of double Petunia

Double petunia flowers are very beautiful in shape, colorful and mostly gorgeous, and the density of flowers is also very high. If maintained, the Citi is very long, which is very suitable for indoor planting. And the adaptability of petunia is very strong, four seasons can be sown to survive, is a very popular flower. The petals of double petals are overlapped, the ornamental effect is very good, and the planting and maintenance are relatively simple. The following is the planting method and matters needing attention of double petunia.

Soil

Requires slightly acidic, loose, fertile, well-drained soil, basin soil can be prepared by semi-uniform mixing of sandy loam and rotten leaf soil.

Fertilizer application

Petunia has a long flowering period and needs continuous nutrition in order to continue to bloom, so it is generally necessary to apply dilute liquid fertilizer every 10 days or so during the growth period, and more phosphate fertilizer should be applied during the budding period to facilitate the colorful flowers.

Watering

Usually watering should be appropriate to prevent too dry or too wet. Over-dried plants are easy to wither, and too wet to rot roots. Summer weather is hot, evaporation is the largest, should be timely supplementary watering, to keep the basin soil moist without stagnant water, rainy season need timely drainage and waterlogging prevention.

Light

Petunia is a long-day plant, which requires strong light conditions for photosynthesis to proceed smoothly, so it is necessary to give sufficient light whether potted or planted on the ground. If the sun is sufficient, the growth is strong, the leaves are luxuriant and the flowers are numerous; if the light is not enough, the branches and leaves are easy to grow, and the flowering quality is poor.

Temperature

Petunia is the most suitable for seed germination at 20 ℃. The optimum temperature for its growth is 13-18 ℃, and the winter temperature is 4-10 ℃. If the temperature is lower than 4 ℃, the plant growth stops. It can withstand high temperature of more than 35 ℃ in summer.

Pruning

When the seedlings grow to about 10 cm high, heart-picking is carried out to promote its sprouting lateral branches, and it will blossom more. If there is no need to leave seeds after each flower fade, the residual flowers should be cut off in time, and the branches should be cut short, and the lateral branches can continue to germinate and blossom continuously.

Matters needing attention in petunia breeding:

1. After the beginning of winter, the temperature drops continuously, the metabolism of petunia is slow, and the need for water and fertilizer is very little. Therefore, we can continue to water and fertilize according to the actual needs.

2. Watering always follows the principle of no dry and no watering, and watering means thorough watering. If the basin soil is not too dry, do not water, to avoid excessive watering caused by rotting roots and leaves or causing young branches to grow, affecting flower bud differentiation and weakening cold resistance.

3. The indoor air is dry in winter. Petunia should often be sprayed with water close to room temperature to wash the leaves to remove dust and keep clean, so as to facilitate photosynthesis, but spraying water can not increase moisture in the basin to prevent rotting roots.

Double petunia has certain requirements on the soil, this kind of flower is especially afraid of stagnant water, so when planting, we should choose the soil with good drainage performance, keep the soil moist but do not have too much water, otherwise it will cause the root to rot to death. Petunia likes a warm environment and should be placed in a warm place when planting in winter so as not to freeze to death. Double petunias require more light, blossom earlier in sunny places, and Citi is longer.