How to choose the seeds of goldfish grass? What are the methods of raising seedlings?

Goldfish grass, also known as dragon mouth flower, lion flower, belongs to the genus Scrophulariaceae. It is named goldfish because its bud looks like goldfish. Goldfish grass is not only diverse and colorful, but also absorbs dust. It is a kind of green plant which is very suitable for family potted plants. Of course, before planting, seed selection and seedling raising are very important. Let's learn about it together.

How to choose the seeds of goldfish grass?

According to the distinction of flower and color, goldfish grass can be divided into many series, such as early flower type early rhyme series, late flower type rhyme series, hanging jumping sugar series, dwarf color palette series and so on. There are some differences in sowing time of different varieties of goldfish grass, so it is suggested to choose varieties with low plants and numerous flowers, which can improve the ornamental quality of potted plants. In addition, seeds must select high-quality seeds, will have a higher germination rate and survival rate.

What are the methods of raising seedlings?

1. Radicle germination stage (3-4 days)

This stage requires that when sowing, the substrate should be kept moderately humid and not saturated. After sowing, the seeds are covered with a thin layer of coarse vermiculite to ensure humidity. The substrate temperature was 19 ℃ ~ 21 ℃, and the higher temperature led to the decrease of germination rate. The EC value of matrix is lower than that of 0.5mS/cm, because goldfish grass is sensitive to salt.

2. Stem and cotyledon appearance stage (10 days)

This stage requires an appropriate reduction of humidity, so that the root system develops downward, and the substrate is wet but not saturated. The substrate temperature is 20 ℃ ~ 23 ℃. If fertilizing, apply a fertilizer containing calcium (13-2-13) with a concentration of nitrogen 25~35ppm. In order to promote flowering, we should supplement light, intensity 4000~7000lx, light time up to 14 hours a day.

3. True leaf growth and development stage (14-21 days)

At this stage, the substrate is required to have dry-wet alternation every day. In the environment of wet substrate, low temperature and weak light, watering in the morning and good ventilation are very important to avoid growth point dysplasia. Fertilizers containing calcium 13-2-13 and 20-10-20 should be used alternately. If necessary, supplement the lighting 7500lx.

4. Transplant or transport (7 days)

This stage requires that there should be alternation of dry and wet within 24 hours, while avoiding seedling wilting. If overgrowth occurs, the temperature should be reduced to 17 ℃ ~ 18 ℃. At the same time, 13-2-13 fertilizer can be used, and the EC value of the matrix is 0.5~0.75mS/cm.

Because of its beautiful flowers and colors, goldfish grass is very suitable for landscape application, so it has been widely used in Qingdao area in recent years, and the effect is very outstanding in the green landscape. And family potted planting friends, must select good varieties, master seedling methods and techniques, in order to make goldfish flowers luxuriant.

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