Generally speaking, lavender blooms from June to August every year. In June, its flowers will gradually start to open. In July, it's the blooming period. Most of its flowers have already opened. At this time, lavender field will generally present a very dreamy purple, very good-looking. If you want to see flowers, you'd better go at this time. By the end of August, its flowers will begin to decay.
For the wild lavender, the flowering period is generally from June to August, but if it is a potted plant, if it is given suitable growth conditions, it can be artificially controlled.
It usually takes 18-20 weeks from sowing to flowering, so you need to reverse the sowing time according to the time you want it to blossom. After it is sown, it needs to be given sufficient light and good ventilation. In addition, it is better to be warm in winter and cool in summer, so as to ensure that it will blossom smoothly.