How to raise potted pansy?

Tricolor pansy is a common species of wild flowers in Europe, also known as cat face, butterfly flower, human face flower, etc., is a biennial or perennial herb of the genus Viola, often cultivated in the park, is the national flower of Iceland and Poland, flowers usually have purple, white, yellow tricolor pansy, more hardy, like cool, flowering is greatly affected by light, let's take a look at how potted pansy is raised!

Growth habits of Pansy tricolor

Pansy tricolor is cold-resistant, cool and sunny, and develops well under the conditions of day temperature 15-25 ℃ and night temperature 3-5 ℃. Avoid high temperature and stagnant water, cold and frost resistant. if the daily temperature is more than 30 ℃, the flower bud will disappear or no petal will be formed. when the daily temperature lasts 25 ℃, only blossom will not bear fruit, even if the seed is fruiting, the seed will not grow well. The root system can tolerate the low temperature of ~ 15 ℃, but the frozen edge of the leaf turns yellow when it is lower than ~ 5 ℃. The influence of sunshine length on flowering is greater than that of light intensity, poor sunshine and poor flowering. The pH of neutral loam or clay loam which is fertile, well drained and rich in organic matter is 5.4-7.4.

Propagation methods of Pansy tricolor

1. Sowing: relatively loose artificial medium can be used for sowing, bed sowing and box sowing can be used to raise seedlings under conditions. The pH value of the medium is 5.5-5.8. After disinfection, the temperature of the medium is kept at 18-22 ℃ after sowing, avoiding light and shading, and seedlings emerge one after another in 5-7 days. The radicle is on display for 7 days. After sowing, the medium must always be kept moist and covered with coarse vermiculite or medium sand. The germination of pansy seeds covered with no seeds is often very irregular, and there can be a difference of one week before and after emergence. During this period of time, keep the soil medium moist.

2. Cuttage: the cuttings were carried out for 5 ~ 6 months, and the germinated branches at the base of the plant were cut and inserted into the peat to keep the air moist. Rooting took place 15-20 days after cutting, and the survival rate was high.

3. Ramet: the ramet is often carried out after flowering, and the rooted new branches germinated at the lateral branches or rhizomes with adventitious roots are cut off, which can be planted in pots and restored in semi-shade.

How to raise potted pansy?

1. Temperature: tricolor pansy likes cool, avoid high temperature and is afraid of severe cold. It grows well in the temperature range of 12-18 ℃ and can withstand 0 ℃ low temperature. Temperature is the limiting factor affecting the flowering of Pansy tricolor. It develops well under the conditions of day temperature 15: 25 ℃ and night temperature 3-5 ℃. The seedlings must go through a low temperature of 28 to 56 days before they can blossom smoothly. If they are planted directly in a warm environment, the flowering period will be delayed. If the daily temperature is above 30 ℃, the flower buds will disappear or no petals will be formed. If there is a sudden heat, high temperature up to 28 ℃ of the weather, should strive to be well ventilated, so that the temperature decreased, in order to prevent wilting and death.

2. Illumination: tricolor pansy prefers sufficient sunlight, which is an important limiting factor for flowering. Sunshine length has a greater effect on flowering than light intensity, poor sunshine and poor flowering. In the process of cultivation, the plant should receive not less than 4 hours of direct sunlight every day. However, because the root system is sensitive to light, under the condition of light, the young root can not smoothly penetrate into the soil, so the radicle does not need light before it grows small. When the seedling grows 2-3 true leaves, the sunshine should be gradually increased to make its growth more robust.

3. Watering: tricolor pansy prefers the soil environment of slight tide and is not resistant to drought. Keep the soil moist during the growing period, dry in winter, and see wet every time you are watered. When plants bloom, it is necessary to maintain sufficient water for the increase of flowers and the increase of the number of flowers. We should pay attention to timely watering in the season with high temperature and strong light.

4. Fertilization: pansy should be thin and fertilized frequently. When two true leaves grow, nitrogen fertilizer can be applied, 0.1% urea can be sprayed early, phosphate fertilizer can be increased near flowering, 3 times thin compound liquid fertilizer can be applied before flowering, 0.2% potassium dihydrogen phosphate solution can be applied twice in bud period, and fertilization can be reduced after flowering. The mature liquid fertilizer was applied once in 10-15 days during the growth period, and once every 20-30 days during the growth period. The leaf deformity and wrinkling of pansy are often caused by lack of calcium, which can be improved by the application of calcium nitrate. It should also be noted that ammonia nitrogen fertilizer will cause root rot of tricolor pansy when the temperature is low.

Pest control of Corydalis tricolor

1. Botrytis cinerea: strengthen ventilation, control planting density, watering to avoid watering, ventilation after watering. Clean up the withered and aging tissue in time to avoid wounds. Use smoke agents and use agents alternately. Ventilation and dampness in time after spraying. At the initial stage of the disease, 1000 times of 50% Sukeling or 500 times of carbendazim, 700 times of chlorothalonil, 500 times of thiophanate methyl, and 500 times of thiophanate methyl can be sprayed, and smoked agents can also be used.

2. Anthrax: in late autumn and early winter, the remains of diseased plants in the nursery were burned, and diseased leaves and flowers were found and removed in time during the growing period. At the initial stage of the disease, 80% Dysen zinc wettable powder 500 times 800 times or 75% chlorothalonil wettable powder 600 times, 60% anthrax Fumei 800 times, 50% carbendazim 500 times 600 times.

3. Broken color disease: broken color disease is mainly transmitted by aphids. 50% aldicarb wettable powder 3000 times and 2.5% fish rattan essential EC 800mm 1000 times were sprayed to control aphids, using alternately for 3 times and once every 7-10 days. For newly diseased plants, use 1.5% Zhishengling emulsion 700 times or 5% bacteriological water cleaning agent 200 times, once every 7 to 10 days, 3 times for 4 times, before dense and then sparse.

4. Leaf spot: remove the residual body and burn it centrally. With 53.8%, 2000 dry suspension or 47% Carinone wettable powder, 30% copper oxychloride suspension, 27% copper noble suspension and 50% methyl thiophanate sulfur suspension were sprayed.

5. Ring disease: remove fallen leaves and burn. Spray control with 27% copper noble suspension solution or 47% Garinon wettable powder 1000-fold solution, Kangkuning 800-fold solution and 50% methyl topiramate 800-fold solution in the rainy season. In severe cases, spray with 1000 times solution of 50% prohydantoin wettable powder or 75% chlorothalonil wettable powder, 70% Dyson zinc and manganese, 80% spray gram wettable powder, spray once every 10 days, use 2 times 3 times.

6. Brown spot: when the new leaves are unfolded, use 0.5% Bordeaux solution to add adhesive, once every 10 to 15 days, or spray with 1000 times of 50% carbendazim wettable powder, 40% chlorothalonil suspension, 50% methyl thiophanate sulfur suspension, 50% chlorobromoisocyanuric acid (chlorobromoisocyanuric acid) water soluble powder 2000 times.

7. Rot: the pathogen is Fusarium oxysporum. When diseased plants are found, they are dug up and burned, the disease points are replaced with new soil, or the soil is disinfected with 0.1% formaldehyde. At the initial stage of the disease, spray control with 50% carbendan wettable powder or 1500 times of methyl topiramate, 75% chlorothalonil and 0.5% Bordeaux solution.

8. Rust: spray 75% oxidized Weixiu Ling 3000 times solution or 25% trimethoprim 1500 times solution, 65% Dysen zinc 600 times solution to prevent. At the initial stage of the disease, 50% carbendazim or 50% methyl thiophanate 500 × 600 times solution and 75% chlorothalonil 600 times solution were sprayed and prevented. After the onset of the disease, add 0.1% washing powder with 97% rust sodium 250g 300 times, spray once every 12 to 15 days, and use it for 3 times in a row.

9. Aphids: spray 40% omethoate or 5 g cigarette butts with water 75m1 for 24 hours, or spray with 3% natural pyrethrum, 25% rotenin, deltamethrin or several drops of edible oil with detergent solution, or 5000 times solution of acetamiprid and 1500 times solution of Averidium.

10. Beetles: the larvae (grubs) were applied into the soil or sprinkled with Millol granules, or poured the rhizosphere of the damaged plants with 1000 times of omethoate, 50% aldicarb, 50% phoxim EC and 1000-1500 times, such as a 23 cm (7-inch) basin, 100ml and 200ml each time.

11. Slugs: sprinkle on the soil near the potted plant with 8% Mixoling granules or 6% Mida molluscicidal particles. It can also be sprayed on the plant with 3% lime water or 100 times ammonia water. In addition, the diseases and pests of pansy include impatiens powdery mildew, blight, magnesium deficiency, manganese deficiency, iron deficiency, eggplant 28-star ladybug, short-forehead locust, thrips and so on.