When to plant hollyhock seeds (a few months) planting methods of hollyhock seeds

Seeds: choose fertile and breathable land to sow the seeds evenly, and pour enough water after the first sowing. Watering: transplant once when the seedlings grow 2-3 true leaves, increase the row spacing, and should be watered at the right time after transplanting. Fertilization: proper fertilization and loosening of soil during seedling growth period, and timely topdressing of phosphorus and potash fertilizer after flower bud formation in leaf axils. Root cutting: in order to prevent low lodging of the plant, the root can be cut every 2-3 weeks after 6 months, and then immediately watered and maintained. Diseases and insect pests: prevent sunflower rust, red spiders and so on.

Hollyhock must be no stranger to it, it is a common flower in our country. Hollyhock is of high value, both ornamental and medicinal, so it is deeply loved by people. So it attracts a lot of people to want to grow it. Before planting, we must first have an in-depth understanding of it.

When will hollyhock seeds be planted (a few months)

Hollyhock seeds can usually be sown between August and September after they are ripe, and if sown at this time, they can blossom the following year.

Planting method of hollyhock seed

1. Sow seeds: after the seeds are mature, choose a piece of fertile, breathable land (or prepare some nutritious soil), sow the seeds evenly, and cover them with a small amount of soil. Remember to water the seeds for the first time.

2. Watering: when 2 or 3 true leaves grow out of hollyhock seedlings, they should be transplanted once, the row spacing should be enlarged, and should be watered at the right time after transplanting. The flowering period should be properly watered to promote a long flowering period and a good flowering all the way to the top of the stem.

3. Fertilization: in order to make the plant grow healthily, attention should be paid to fertilizing and loosening the soil during the growing period of hollyhock, weeding and seedling. After the flower bud is formed in the leaf axil, it is necessary to apply phosphorus and potassium fertilizer, and cut off a few pieces of the leaves at the base.

4. Root cutting: when planting hollyhocks, in order to make the plant low and prevent lodging, the roots can be cut off under the conical shape of Juglans mandshurica around the plant in June, once every 2 to 3 weeks, and then watered immediately.

Propagation methods of hollyhock

1. Split-plant method. The ramet of hollyhock is usually carried out in autumn. The perennial hollyhock is dug out of the soil and the stem bud is divided into several clumps with a sharp blade to ensure that each clump has two or three buds. Then respectively planted in the substrate, the matrix generally choose fertile, well-drained sandy soil. Water thoroughly immediately after planting, and it will blossom the following year.

2. Cutting method. Cuttings can be carried out from flowering to winter. Generally select the side branches that germinate at the base of the old dry hollyhock as cuttings, the length is about 8 cm, and the matrix is generally sandy soil. After cutting, cover the nursery bed with plastic film, maintain a certain amount of humidity, and place it in the shade until the roots grow. For cutting in winter, a heating device needs to be laid at the bottom of the seedling bed to increase the ground temperature, maintain the temperature of the seedling bed and accelerate the growth of new roots.

Common diseases and insect pests of hollyhock and their control methods

1. Sunflower rust: spraying Bordeaux solution on plants in spring or summer or disinfecting seeds before sowing can play a control effect. At the initial stage of the disease, 15% vermicellin wettable powder can be sprayed 1000 times, or 70% methyl topiramate wettable powder 1000 to 1500 times, or 75% chlorothalonil wettable powder 1500 times, etc., once every 7 to 10 days, 2 to 3 times in a row, all have good control effect.

2. Red spider: when the occurrence is serious, it has a good control effect to spray evenly with 7000 to 9000 times of avermectin EC or 2500 to 3000 times of 15% abamectin EC. Do not use dichlorvos to kill mites. Dichlorvos can stimulate the proliferation of mites. Do not use pyrethroid pesticides, which are basically ineffective against mites.

3. Cotton leaf roller: when it occurs, it can be sprayed with 16000IU/ mg Bt wettable powder solution, or 25% diflubenzuron suspension 1500 to 2000 times, or 20% rice full suspension 1500 to 2000 times, and so on.

4. White spot disease: remove the diseased leaves in time and pay attention to the density of branches and stems to keep the plants ventilated and transparent. Increase the application of phosphorus and potassium fertilizer, apply little or no nitrogen fertilizer. At the initial stage of the disease, 75% chlorothalonil wettable granule 800x liquid or 50% carbendazim wettable granule 500x liquid or 70% methyl thiophanate wettable granule 1200 times spray can be used for prevention and treatment, once every 10 days, spraying 3 times continuously for 4 times can effectively control the disease.

Hollyhocks have no special season when they are planted, but only when the seeds are ripe. The method of planting is also very simple, mainly to strengthen the field management in the later stage, and to control the amount of fertilizer and water. Hollyhocks may also be attacked by diseases and insect pests, so work in this area should be done well. Only in this way can hollyhocks grow healthily.