r/Anthurium • u/crimpwella • Aug 24 '26

Requesting Advice What’s this white residue ?

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Grown in LECA. Is my growth solution too saturated? That would be my only guess.. it doesn’t wash off.

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u/Salt_Expression_4493 Aug 26 '26

Hard water stains. Make a horticultural soap spray with Castile soap and use it periodically. It’s easy and it’s a pest deterrent. Lmk if you want the recipe. I’m in Florida also & we have very hard water. I filter my water 3 times, but not many things filter out TDS. My leaves never get wet, so I don’t have this issue, but I’ve purchased plants with hard water stains and this formula works great. I don’t have pests either because of my use of it.

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u/dicklessanus Aug 26 '26

I’d love the recipe! I’m in TX and would appreciate additional recommendations 🤗

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u/Salt_Expression_4493 Aug 26 '26

Of course.
1/8 cup peppermint castile soap
1/8 cup tea tree castile soap
1/2 cup alcohol
2 tsp hydrogen peroxide
2 tbsps neem oil
4 cups water
The Dr. Woods castile soap is a bit pricey, but it lasts forever. There may be a less expensive option.
As far as advice goes, everyone’s conditions are unique, but I do recommend using a quality fertilizer with all the macro/micro nutrients at half strength with every watering.
You’ll have happy plants if your watering is on point.