How to propagate delphinium? Introducing two methods: seed sowing and cuttings

Delphinium is a flowering plant native to Europe, later introduced to China, and today many people in China grow it. However, as more people grow it, questions about its propagation have become a concern for many. So how do you propagate delphinium? What are the propagation methods for delphinium? Let's take a look below.

I. How to propagate delphinium

As for how to propagate delphinium, the two most commonly used methods are seed sowing and cuttings. Both methods have been tested countless times, and the survival rate is relatively high. As for how to carry out these two propagation methods, the details are below; let's continue reading.

II. Delphinium propagation methods

Seed sowing propagation

1. Sowing time

Among delphinium propagation methods, seed sowing is a relatively common one, but there are also many points to note. First, the sowing time is very important. Choosing the right time to sow can greatly increase the survival rate. The suitable sowing time for delphinium is August to September each year.

2. Seed germination

Before sowing delphinium, we need to first soak the seeds in warm water for one day. When the seeds begin to absorb water and swell, we can take them out and sow them. This can play a role in promoting seed germination.

3. Sowing method

Compared with cutting propagation, seed sowing is a bit more complicated among delphinium propagation methods. First, we need to mix delphinium seeds with fine sand and scatter them evenly, then cover them with 1-2cm of soil, and then water. When watering, make sure to water thoroughly in one go. About 7-12 days after watering, they will sprout.

Cutting propagation

1. Selection of cuttings

Before carrying out cutting propagation of delphinium, we first need to select the cuttings, that is, the branches of delphinium. It is best to choose branches that are robust and free of pests and diseases, as this will greatly increase the survival rate.

2. Cutting method

Among delphinium propagation methods, cutting propagation is relatively simple. When cutting, we can first use chopsticks to poke a hole in the soil, then insert the cutting. This can avoid damaging the cutting. After that, press the soil flat and water. Water thoroughly in one go, and about 15-20 days later they will take root.

What are the propagation methods of delphinium

Delphinium propagation method: seed sowing

The suitable germination temperature for delphinium is around 15°C, and the soil temperature is best below 20°C. They germinate in about two weeks.

For autumn sowing, sow from late August to early September. First sow in an open-ground seedbed, then move to a cold frame or cold room to overwinter before winter, and plant out in spring when it warms up. In the south, direct sow in open ground in early spring, and thin the seedlings to maintain a spacing of 25~5 cm between plants.

In the north, seedlings are generally raised in advance and planted out in mid-April. Transplant when there are 2~4 true leaves, and plant out when there are 4~7 true leaves. Pay attention to drainage on rainy days.

After sowing, the soil must be kept moist. The simplest method is to cover it with some grass, and gradually remove the cover after the seedlings emerge.

Delphinium propagation method: cuttings

Delphinium cutting propagation is carried out in spring. When new branches grow to more than 15cm, cut off cuttings and insert them into sandy soil.

After inserting them into the sandy soil, do not rush to water. After 2-3 days, water appropriately.

Delphinium propagation method: division

This can be done in both spring and autumn. In spring, divide when new shoots grow to 15-18cm, and transplant after rooting. You can also take new shoots from the base after flowering for cuttings.

Division depends on chance. Some delphiniums do not grow new shoots even after 3 years, while some delphiniums grow many small plantlets clinging to the base of the mother plant in just 1 year.

Division is generally carried out once every 2-3 years, otherwise it easily drains the mother plant's vitality. Mother's Day has just passed, so let us also give the delphinium mother plant more care and let her spend more time with her children. That way, when the children become independent, their posture will be strong and robust!

Whether delphinium is propagated by seed sowing, cuttings, or division, attention must be paid to the problem of plants lodging. Delphinium plants have tall main stems, and insufficient light easily causes leggy growth, making them prone to lodging or bending of the main stem. After they grow to a certain stage, attention should be paid to support and fixation. You can use small branches, small wooden sticks, or small bamboo poles to gently tie the main stem. Remember not to use force, to avoid damaging the stem's skin.

Introduction to delphinium propagation methods

Delphinium can be used for flowerbed decoration and edge greening, and can be grown in pots or containers. Generally, delphinium can be propagated by seed sowing, cuttings, or division. The editor will introduce the propagation methods of delphinium for you. Friends who like it can learn about them together.

Delphinium

Delphinium fruits contain many seeds. The seeds are relatively small. After collection, dry them and store them indoors in a cool, dry place. To achieve flowering in multiple seasons, sowing can be done in stages, but in southern cultivation the flowering period should be staggered to avoid the heat of midsummer. Delphinium is a taproot plant with few fibrous roots and is not tolerant of transplanting. In the south, direct sowing in open ground in autumn or spring can be used for overwintering. In cold northern regions, spring sowing should be used. In warm northern regions, autumn sowing can overwinter in open ground with coverage, or the plants need to be moved to a cold frame or low-temperature greenhouse to overwinter in winter. Sow in seedling trays, water thoroughly with bottom water, sow about 20 grams per square meter of seedbed, and control the temperature appropriately. The time for delphinium seeds to germinate and emerge is one of the longest among open-ground annual and biennial herbaceous flowers, generally requiring 15-20 days. After emergence, seedlings should be moved into containers (7-8 cm in diameter) as early as possible to grow into mature seedlings.

In addition, perennial delphiniums of the same genus but different species can also be propagated by cuttings and division. Cutting propagation is carried out in spring, and the cuttings are picked and inserted into a wet sand bed or sand tray. Division can be carried out in both spring and autumn. Dig up the small shoots sprouting around the old plant together with their roots, divide them into small plants, and plant them. If divided in spring, they can bloom in the same year.