What's the best time of year And how would you cut a leggy chinese evergreen into stems for re-rooting? Would you use something to promote rooting after cutting?

Welcome to ATP,
Do you know the botanical name of your plant? Is it a Aglaonema?

One thing I learned is to not root the cuttings in water. Sure, the cuttings will root okay in water, but the roots may be too weak to make the transition to being planted in soil. Best to take the cuttings, use rooting hormone (optional), stick the cuttings in a decent medium and keep moist.

Here is a link which has good instructions.
http://www.jaycjayc.com/propag...

Edited to add link to Aglaonema in the ATP database:
http://garden.org/plants/brows...

Hi & welcome! Summertime seems to be the best time, but have done it when bored during the winter too. With a plant like yours, with multiple stems, you could cut one now, another when that has taken root, then another, so it never looks like it just got a drastic haircut. When you cut off the top part, the stump will grow one or more new tops. I've been doing them for decades, never used any hormone, just stick in a pot. The more length of stem I bury, the better the success seems to be. Just don't stick it so deep that the petioles (leaf-stems) are under.

I submerged about 8" of this stem and a new stem grew from every node. (A. modestum, specifically.)

Hello, my chinese evergreens were getting leggy and I decided to try to propagate the cuttings to get new ones. It worked and they grew roots from them but as far as the stem from the original plant is just a stump. I'm not sure if I should leave it to see if it sprouts new branches or do I have to cover it to create a humidity bubble to force it to do so. It's been awhile now and nothings happened. Your advise would be appreciated.

Hi & welcome! Being still green is a good sign. Is the soil as dry as it looks? If so, I would water well. New growth could come from somewhere on the stumps, from below the soil level, or both in time.

Maybe I'm using the wrong soil. I might have used succulent spoil but it looks dry because I only water on Sundays. But I may have to change it to regular potting soil. Thanks.

Happy to reply. This is not a plant that I've noticed being picky about soil, as long as it doesn't get too dry or compacted.

Keep it moist and give it fairly bright light to get it to grow quicker. They will grow in fairly low light, but faster with plenty. When you water it make sure plenty comes out the bottom, then let it get dry on top.