They look so cute so far. Subbed for this.
I should also mention that the holes at the bottom are also protected by mesh and vermiculite/perlite so now they should have no way of getting in.
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That white gravel will help reflect light as well as detering gnats - double practical as well as pretty!
Winner!All that while mantaining soil humidity and lowering soil surface temperature, like any mulch does.
soil humidity is still high, basically they just lost 5% soil humidity since last watering, which was before last update, about 4-5 days ago. Clearly the gravel is very efficent at keeping water in so I will have to water them less.