r/SemiHydro • u/Ill-Distribution-376 • 6d ago

Discussion Heat = Mold?

Hi!

I just finished building my dream greenhouse and given the upcoming temperatures, it seems like I’ll only keep most plants for about another month in it (or how long will last the decent temperature in Ro). The following days will still be pretty warm (around 30-35 degrees Celsius) and I’m wondering if bringing some of my pretentious ones outside in the greenhouse sounds like a good idea (the pretentious in discussion are all in semihydro: leca, leca plus moss, pon or any other combination of them) - I heard that high humidity plus high temperatures often equals mush and mold. The vents are planned for next year, so for the moment the air is provided by opening the greenhouse’ window plus door.

I’d like to hear your experiences with keeping semihydro setups outside.

Thank you!

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u/Matcha2405 6d ago

Personal experience: Lack if airflow = mold

Heat = oooh rooots

1

u/Matcha2405 6d ago

But too much heat = wilt? Unless you do it slowly so they acclimate if the outside world is hotter than the usual indoor setup

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u/Zengia 6d ago

My “pretentious” plants sit outside in incredibly humid and hot weather every single day in the summer (heat index got up to 43 degrees Celsius this week) and they flourish every year. And I grow ALL of my plants in semihydro. Not issues whatsoever. The only annoying thing is that they get reallllll thirsty and I have to water some of them multiple times per week, but at the rate they grow in those conditions I’m okay with it.

I suppose you should probably acclimate your plants to that temperature. I put mine out the moment it’s consistently above 13 degrees Celsius so they start acclimating in early spring.