When does coleus bloom?

Flowering period

Coleus blooms in summer and autumn, with terminal racemes and small, light blue or white flowers. It blooms once a year and the flowering period is about a week. But the environment is different in different regions, and in some areas it blooms in August and September.

What to do when flowers bloom

Before flowering, if you are a flower-growing expert, you can consider saving seeds; when flowering, use a brush dipped in pollen to brush the stigma for artificial pollination, and then put it in a paper bag to isolate it to prevent hybridization and degeneration. After flowering, to ensure the normal growth of the plant, it is necessary to apply fertilizer in time, mainly with phosphorus and potassium fertilizers, to ensure the nutritional needs when bearing fruit.

How to harvest seeds

Generally, after flowering and fertilization, as long as there is sufficient sunlight and no pests and diseases, coleus can produce seeds. One month after seeding, the seeds are mature and can be divided and harvested. After harvesting the seeds, dry them in a cool place and wait for sowing next year. Because the seeds of coleus are tiny, try to harvest them together with the pods and dry them in the sun. Another point that needs attention is that when you sow the seeds you harvest the following year, some variation will definitely occur. After the seedlings emerge, you should screen them and eliminate the weak ones.

If the seeds fall off by themselves, can seedlings grow?

The small nuts of coleus will fall off naturally after they mature, but when the seeds mature, they will fall due to wind and rain. In addition, when cutting the flower spikes, the sepals have turned yellow and are relatively brittle, so it is inevitable that some seeds will fall to the ground. These seeds seem to be able to germinate into seedlings in the soil, but because they are not cold-resistant, they will not grow well. Therefore, it is impossible to expect coleus to reproduce on its own.