叶片狭窄，灰绿色，茎直立，在国外夏秋季节开花，为穗状花序，花序长5-15公分，花色因品种而异有蓝，淡紫，紫，浓紫及白色等，以蓝色最普遍。

[[File:薰衣草11.jpg|300px|缩略图|右|薰衣草[https://timgsa.baidu.com/timgimage&quality=80&size=b9999_10000&sec=1563254791318&di=a58096f456901a8dc909bd85e890a92f&imgtype=0&src=http%3A%2F%2Fimage.shumiao.net%2Fuploads%2F20190108%2F20%2F1546950160-NxyFuHelgL.jpg 图片链接][https://image.baidu.com/search/detail?ct=503316480&z=0&ipn=d&word=%E8%96%B0%E8%A1%A3%E8%8D%89%E5%9B%BE%E7%89%87%E5%A4%A7%E5%85%A8&step_word=&hs=2&pn=1&spn=0&di=76010&pi=0&rn=1&tn=baiduimagedetail&is=0%2C0&istype=0&ie=utf-8&oe=utf-8&in=&cl=2&lm=-1&st=undefined&cs=3911331048%2C896363335&os=4069668553%2C3135714889&simid=3438000200%2C306182528&adpicid=0&lpn=0&ln=662&fr=&fmq=1563244248382_R&fm=&ic=undefined&s=undefined&hd=undefined&latest=undefined&copyright=undefined&se=&sme=&tab=0&width=undefined&height=undefined&face=undefined&ist=&jit=&cg=&bdtype=0&oriquery=&objurl=http%3A%2F%2Fimage.shumiao.net%2Fuploads%2F20190108%2F20%2F1546950160-NxyFuHelgL.jpg&fromurl=ippr_z2C%24qAzdH3FAzdH3Fooo_z%26e3Bfi74tw5_z%26e3BgjpAzdH3F4tw547AzdH3Fdaba_d_z%26e3Bip4s&gsm=0&rpstart=0&rpnum=0&islist=&querylist=&force=undefined 图片来自百度图片]]]