Hi @Gina1960
I've seen a lot of your reply's to posts and for starters I want to say a big thank you for all your expertise and help you give to everyone! I can tell you really love plants. Ok so what I was wondering is, I see you mention Captan a lot and was wondering if you could give me some measurements on how to use it. I have some anthurium that had a little root rot and some Alocasia tubers/rhizomes? that had some rot I cut off and was wondering how much of the powder I should be mixing in with water? There really isn't specific info on the package for aroids and things like that. I and also read somewhere it can be used on seeds and seedlings and was wondering if I should use it on my anthurium seeds/seedlings as a preventive measure and if so how much?
Oh and on a side note was wondering if you had a recommendation on how to battle spider mites? I seem to be able to control all other pests besides these little buggers. They LOVE my colocasia and Alocasia

Ashley

Hi Ashley, No, there is no real measurement. Captan doesn't really dissolve in water. It just forms a slurry which youth either soak something in, or use as a soil drench.
I suppose you could use it on your seeds, but why? If they are not rotting, there is really no reason to use it.

I am not a houseplant grower when it comes to aroids. I grow in a 1740 sq ft freestanding greenhouse which is detached from my house by about 200 or more yards. I use pesticide that is not suited exactly to using in a house environment, I use Orthene which was taken off the market for home gardener usage years ago except in the form of Fire Ant killer. Its an old school organophosphate and is not labeled for casual use, even though you can still buy it on the internet...its generic form is Acephate. You need to wear gloves and a high quality respirator to spray it, and it can be toxic to the good bugs like bees and such as well as the target pest. But I don't have bees in my greenhouse so its ok in there.

I have seen where many people who grow in their houses use pesticides with an ingredient called Spinosad. You have to have something that is specific to spider mites because they are actually arachnids, like a spider, and some routine pest control products do not kill them, just like Raid may not kill spiders in the house. As if anyone would WANT to kill spiders...I don;t I just relocate them. Whatever you use you have to spray the plant on all surfaces including the stems until wet and dripping, and repeat serially for at least 4 weeks, 7 days apart.

Thanks so much! That all makes sense.
I think I had read it could be used to prevent dampening off but I could be wrong, I read entirely to much! 😂 Thank you for getting back to me so quickly. I really appreciate it!

Yes, it can be used for that. So can Physan20

@acornely10 - a non-toxic treatment for spider mites that works very well is horticultural oil. It smothers the mites and the eggs. Don't use it within 30 days of using sulfur though, and don't use it on any plant that has a glaucous blue coating on the leaves. I also sprinkle diatomaceous earth on the soil surface of any plant that tends to get spider mites as well.

Deanna