Rudbeckia: growing from seeds, sowing and caring for seedlings

The history of breeding rudbeckia began in the days when the first Europeans who moved to North America transplanted a beautiful plant from the wild into their flower gardens. For the unusual shape of the flower, they called it Suzanne's black eyes.

Very quickly, the seeds of the plant got to Europe, where K. Since that time, rudbeckia have firmly established themselves in gardens and flower beds. We will try to find out about how rudbeckia is grown from seeds and what is needed for this.


  • What you need to know when collecting or buying rudbeckia seeds
  • Preparing for planting and planting rudbeckia seeds for seedlings
  • Sowing rudbeckia seeds in the ground

What you need to know when collecting or buying rudbeckia seeds

To collect rudbeckia seeds yourself, you need to follow a few rules. To preserve the seeds before planting, you need to collect them during the daytime and always in dry weather. The rudbeckia basket absorbs atmospheric moisture very quickly and the seeds can become moldy and rot during storage.

Seeds of rudbeckia are formed in the center of the inflorescence from the median flowers. Its marginal flowers are sterile. In place of tubular flowers, oblong achenes with a small crown appear.

It is important to harvest ripe seeds, they ripen in rudbeckia in September. If you do not have much experience in collecting seeds, then it is better to wait for the inflorescences to dry completely. When this happens, you need to cut off the selected specimens with scissors. Protect your hands with gloves. Arrange the cut inflorescences on sheets of paper in a dry place. Here they need to be kept for 6 - 7 days until they dry completely. After that, pour the seeds into a paper bag and store until spring in a dry place at + 20 degrees.

Subject to the rules of collection and storage, rudbeckia seeds remain viable for three years. This must be borne in mind if the seeds are purchased at the store. In addition, it is important to know that the seeds of the hybrid plants do not convey the properties of the parent plant. In this case, you should not collect them yourself; it is better to buy them in a store.

How to choose rudbeckia seeds in the store

As mentioned above, rudbeckia seeds lose their germination after three years. When making a purchase, pay attention to the collection date. In addition to the date of collection, the sale date must be indicated on the seed bag. It depends on the quality of the packaging. If the seeds are packaged in paper bags, then the implementation period cannot be more than one year.

If the seeds are packed in foil or have double packaging, then the period for their sale is two years. You should not choose many varieties at once, take seeds for future use. Also, look out for the variety or hybrid you purchased at the store. It depends on whether it will be possible to harvest seeds from such a plant.

Preparing for planting and planting rudbeckia seeds for seedlings

There are two ways to grow rudbeckia from seeds:

  • through seedlings
  • sowing seeds directly into the ground

The first method is advisable to use for expensive elite varieties, when the number of seeds is limited. If we are talking about a common variety and seeds in abundance, then you can sow them directly into the ground. Regardless of the method chosen, the seeds need preparation.

Seed and soil preparation

In general, rudbeckia seeds do not need special preparation. It should not be carried out in cases where preliminary preparation was carried out by the manufacturer. To restore the water balance, it is enough to place rudbeckia seeds in water. Keep them there at a temperature of + 20 for 15 - 20 hours. Then they are slightly dried and, for the convenience of sowing, combined with sand.

The technology of soil preparation for rudbeckia consists in its disinfection. The easiest way is to take out the soil for three days in frost, and for the same time, bring it into the room, and then repeat the procedure two more times. You can fry the soil in the oven.

For sowing rudbeckia, a ready-made universal soil or a mixture of garden soil with peat is suitable.

Sowing seedlings

The sowing time for rudbeckia seedlings is the end of March - mid-April. Fill seedling boxes with soil. Spill them with water during the day. In wet soil, make grooves 1.0 - 1.5 cm deep. Place the rudbeckia seeds evenly and lightly sprinkle them with soil. The embedment depth should not be more than 2-3 mm. Cover the crops from above with glass, foil.

The germination temperature should not be lower than + 16, it is optimal to maintain it at + 20 degrees. Seedlings appear in 14 days. They need systematic watering and hardening before planting in the ground. The best time for transplanting to the site is the last decade of May - the first decade of June. If desired, rudbeckia can be sown directly into the ground.

Sowing rudbeckia seeds in the ground

Sowing time in the ground is June. This method of growing rudbeckia has its pros and cons. The first is the ability to immediately sow in the ground, and not waste time and space for growing seedlings. And the disadvantages include the fact that such plants will begin to bloom only next year.

In general, sowing is carried out in the same way as for seedlings. Grooves are made in the prepared soil. Spread the seeds and sprinkle with a thin layer of soil. The garden bed is carefully sprayed. Seedlings also appear in two weeks. Further care will include:

  • in removing weeds
  • in loosening the soil
  • in watering
  • in dressings
  • in thinning

To ensure good growth, after about two weeks, the first feeding is carried out; any complex fertilizer, for example, agriculture, is suitable for this. Three weeks after the first feeding, another one is carried out. By autumn, a quite strong rosette of leaves is formed from the seedlings. It is important to prepare rudbeckia bushes for wintering.

The entire rosette is cut at the root, and the planting site is mulched with a layer of peat. Its thickness should be 5 - 7 cm. Many varieties are capable of self-sowing propagation, and many do not live in the garden for more than 3 - 5 years and need to be updated. In general, the plant is unpretentious, it almost does not get sick and is not damaged by pests, so rudbeckia can be safely sown in the garden.

Video review of rudbeckia flowers:

Watch the video: Fix Leggy Seedlings (January 2022).