Jef79answered grow question 4 years ago Hello.. Hope you are well.. At present in Central Europe we on about 15hrs of day light atm.. Shud b enuf for an auto as she wont flower until she's ready n by time she does start we'll av brighter days giving her more power!!, not necessary to get a lamp but wud b usefull wen u get bad weather or later months if u continue.. Stay safe n gud luck with her.. 👍🍀