Beginner question over watering

[Tinyjames]

Morning all

I bought some young plants saplings with what looks like normal potting compost, on some of the saplings pots the compost is turning green and some have a sort of moss growing I think it’s called liverwort?” is this a sign of overwatering.


The saplings will be repotted next year but if I add sand to the top of the pot once I remove this moss will it come back? Just looking for advice on stopping the growth in the future

 

[ShimpakuBonsai]

Liverwort can be an indicator that your soil or growing medium is too wet.

If this is the case, it is obvious that the medium must be changed to be more free draining. Larger inorganic particles can be used to do this.
If it is still a problem, look at the top layer of the soil. This could contain spores of liverwort. Scrape the top layer off and replace with a coarse material.

 

[Shibui]

Liverwort is similar to mosses but has a flat leaf. It thrives here which probably means I water too much but I rarely have other problems as a result. Far more trees die of too little water so I'm still better off overwatering in my conditions.

Each grower will use different soil mix that suits how they grow in their particular conditions. What works for them may or may not work for another grower in different area. We all find materials and methods that suit our own needs.
Liverwort is a great survivor. It may or may not keep coming back. Less water will help keep it at bay. Sand on top of the soil mix may help but if you keep it wet liverwort will still grow over sand.

 

[Tinyjames]

@Shibui @ShimpakuBonsai thank you for the reply I'm going to try sand and grit just to try and keep it under control.

On the other hand, my trees/saplings are doing well, My European Larch have new buds breaking out.