The NI also increased plant heights and length of inflorescences and advanced the flowering date of L. heterophylla, but it was feckless to L. dentata.

• 暗期中断处理也会增加甜薰衣草的株高，提早花朵开放时间，并使其具有较长的花穗。而齿叶薰衣草则与前述两者之反应较为不同，其对暗期中断处理无较明确之反应。