Apologies if I missed this anywhere else.. I've been looking all over and cant find this and Googling just gives me time of year not time of day. I'm looking to seperate some rooted acer circinatum, it's been 3 months. I figure I should wait for some cool weather. I could even wait longer if that is necessary, these are my first tries. My main question was is it better to separate the air layer in the morning or evening? I transplant veggies a lot in the evening so I couldnt decide.