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大田龙须草抽穗开花可以从５月延续到１０月，但大量开花为５月中旬。单稳开花持续３～４ｄ，而以第２～３ｄ开花数最多。龙须草昼夜均能开花，以白天为主，约占一天开花数的８０％左右［１，２］，并且出现两次高峰，第１次在上午７～９ｈ（温度在１９～２３℃之间，湿度为７８％～８２％左右）。第２次高峰出现在下午１７～１９ｈ，但峰值显著低于第一次。
Field Eustoma heading flowering can be extended from May to October, but a large number of flowering in mid-May. Monostable flowering continued for 3 ~ 4d, while in the 2nd ~ 3d flowering number up. Asarum is able to bloom both day and night, mainly in daytime, accounting for about 80% of the number of flowering in a day [1,2], with two peaks occurring, the first between 7 and 9 hours (at 19 to 23 ° C Between, the humidity is about 78% ~ 82%). The second peak appeared in the afternoon 17 ~ 19h, but the peak was significantly lower than the first.