Hello everyone I'm new to this forum.
I've use to grow an 8 year old bonsai when I was in california and have always used the overhead methods doing it twice, once to get the soil wet to help retain water better and after about 10/15 mins then water again.
I've moved to Vancouver area around 4 years ago and couldn't bring my bonsai with me due to border crossing. So I have recently brought a 10 year old juniper this time at a nursery called Sunny Bonsai Greenhous Ltd. www.sunnybonsai.com. However when reading the instructions I've came across a different watering technic that I haven't incounter before called submersion.
Submersion is the preferred method by the nursery and it instructs that "Leave the bonsai (in its pot) in a tub or sink of water for approximately 15 minutes to thoroughly soak the soil when watering is needed." As well as when to water [when soil dries a little] same as my other plant.
It also advise to leave some water in the water tray as "Water evaporating from the tray provides excellent humidity. However, never let the bonsai soak up water from teh tray as constanly wet soil will cause root rot."
These are two new methods to me as I have always thought that water tray is use to catch water coming out of the drain hole.
Any information on this subject will be helpful thank you.