When will the latest evening primrose blossom?

Evening primrose is a flower that many families like to cultivate. Its branches are slender, flowering in summer and autumn. Yellow-green flowers open in the evening, with strong fragrance. It is very suitable for home planting. However, evening primrose cannot be placed indoors for a long time, which will cause dizziness, cough and even asthma and insomnia. Let's take a look at when evening primrose blooms!

When does evening primrose bloom?

Generally, the flowering period of evening primrose is from May to October. The reason why the span is so large is affected by variety, temperature, humidity, soil and climate from north to south, so it presents different seasons. In the north, the flowering period is in late June, while in the south, it is mostly from August to September. This is due to the high humidity caused by the summer heat in the south, which is suitable for the blooming of evening primrose.

Why does night light burn?

1. Night primrose is pollinated by ugly moths, unlike bees and other small things like other flowers, and moths only appear at night, so in order to attract moths to pollinate, they choose to smell at night, which is the adaptive ability of plants to the environment.

2. Night primrose and stomata are diametrically opposed to many flowers. Other flowers approach some stomata when the air humidity is large, and expand when the air humidity is small, while night primrose is opposite. If the air humidity is very large, the pores are very open, and the aromatic substances inside can expand more rapidly, thus fragrant. At night, because there is no evaporation of the sun, the ground temperature drops suddenly, the cold air drops, and the humidity increases sharply. Night primrose is of course easier to open in such a humid environment, and the opening is more intense.

Why doesn't evening primrose bloom?

1. The flower buds of night primrose have been formed on the bulbs in the first year. It is possible to plant small tubers, which have not reached the flowering age, so they cannot bloom. Generally, the diameter of the bulb of night primrose should reach 2.2 cm or more, and the original inflorescence has been formed in the first year, and it can bloom only after planting.

2, dig bulbs too late or tuber winter storage is improper, the temperature is too low, damp and frozen, resulting in flower buds in the stem block by freezing damage or rot, planting in the next year can not bloom.

3. The time of bulb digging is too early, which affects the differentiation of flower buds in tubers, resulting in failure to bloom in the second year of planting.

4. Excessive application of nitrogen fertilizer leads to excessive growth of stems and leaves, less flowering, and even no flowering in serious cases.