Asparagus growth speed is different during the day and at night. During the day the average growth speed is 0.37 cm/hr. At night it is 0.18 cm/hr. So basically, the growth speed is doubled during the day compared with that at night. The summary: ![](/upload/album/7b/5e/d1/a6de902e4912e2RdM3zG.jpg)
The sources: 1). 13.8 cm ![](/upload/album/b5/11/ef/0075ee809078QmasFUWQ.jpg)
![](/upload/album/b5/11/ef/0075ee809227ZId2EexF.jpg)
2). 12.0 cm ![](/upload/album/b5/11/ef/0075ee808989tfXWxp2A.jpg)
3). 17 cm ![](/upload/album/b5/11/ef/0075ee809563EAtaSoSm.jpg)
4). 15.5 cm ![](/upload/album/b5/11/ef/0075ee809384xkCVGEB1.jpg)
5). 20.1 cm ![](/upload/album/54/f0/80/832dd9539674th4nwWrE.jpg)
6). 17.3 cm ![](/upload/album/54/f0/80/832dd9539618oKPqIko2.jpg)
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