The diameter of the container determines how many lobelia bushes can be planted in it. An excellent option would be to combine several varieties of a flower that match each other in shade and size.
Lobelia is a very delicate plant, so it should be planted in a warm, sunny place where there are no strong winds.
The plant does not like too wet soil, so the best option would be to mulch the stems. If you are going to grow lobelia in a pot, then use rich soil with good drainage.
Many flower growers sow lobelia in small containers with purchased soil for seedlings, and then the seedlings dive. For sowing, shallow (3-4 cm deep) containers are used.
The soil substrate is slightly compacted and well moistened, and then seeds are scattered over its surface, trying to do it as evenly as possible.
For lush flowering, lobelia needs potassium. She can get it from ash, humate or potassium sulfate.
You can take ready-made fertilizers for flowering plants. I feed 2 times a month.
For better flowering, lobelia can be fed 2-3 times during the summer. Make the first top dressing with potassium sulfate, and in the subsequent ones - apply complex fertilizer.
Lobelia needs to be trimmed several times a season.
This pruning allows the bushes to become more lush and prolongs the flowering of the lobelia. Lobelia branches need to be trimmed.