The Literati/Bunjin Thread

[Shogun610]

Idk man there's not much nuance to the way you phrased that. Also we're talking specifically about a Thuja, which is a bog tree. It grows waterlogged by default

Does this mean we’re not friends?
yes it is algae growth…I’d take it off regardless if it were bog tree or not have a good rest of your day!

 

[Ruddigger]

You owe Ryan Niel $50!

 

[River's Edge]

I never accepted broad statements as fact all I said that the green algae indicates no oxygen absorption and it also could be a sign of poor drainage .. in my experience when top dressing was green it mean root rot or poor drainage or the top dressing was too thick.. but I’m happy to be corrected not too proud for that. And liverwort is definitely a sign of high water retention

No worries at this end.
Blue Green Algae definitely is a clear indicator of anaerobic conditions, green algae usually indicates continuing wet conditions and often excess nutrients at that level but not necessarily anaerobic conditions. Lots of other factors can be involved such as nutrient levels, pore space in the media, mix or uniformity of particle size along with size and quantity of drainage holes. Algae is a fairly broad term and it can grow in very healthy conditions with respect to nutrients, sunlight and oxygen. H2O Those who have extensive background in the aquarium hobby will be very familiar with the varieties of algae forms.
In most cases it pays to heed signs of overwatering and correct routines before they create more serious issues. Liverwort is always an indicator of continuing wet conditions and usually compacted soil at the same time in my experience. Often it is simply a reflection of. the top layer that compacts more easily with organic decomposition of fertilizers and certain substrates. Easily corrected with " Soji" in the fall maintenance routines. This is often the case in my nursery with a heavy use of organic fertilizer and ample watering to maximize growth in younger trees under development. Not with trees in the refinement stage where fertilizer, water and care routines are much more strictly adhered to.
I expect this concern to be more prevalent with those making use of higher percentage organic substrate. Definitely feel that would alter ones experience, my bonsai journey has been almost entirely with inorganic substrate.