Ask a Question forum→Anthurium yellow spots - please help

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Netherlands
cactuses
May 5, 2020 2:59 AM CST


Hi there,

I repotted this anthurium into a terracotta pot about 2 months ago. It's been doing quite well, I've been watering once per week but upped it to twice per week as we've had some very dry conditions in our apartment. I've also been misting the leaves once per week, possibly a little too heavily though.

I've noticed some yellow spots showing up and the occasional break/hole in the leaf (I will do a follow-up post with the photos, see below).

Could it be that I'm watering the plant too much? The soil is drying out after only 3-4 days, hence why I have been watering biweekly. Or could it be that I shouldn't be misting the leaves? I read that getting the leaves wet can promote bacteria growth, thus I think I will stop.

I have been washing my shears before pruning as I hear this can cause infections. One article said to remove all leaves with yellow spots as it is likely a bacterial issue which will only disappear once all infected leaves are removed.

Any help would be appreciated :)

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Netherlands
cactuses
May 5, 2020 3:01 AM CST
Here are some more photos of the plant.

As you can see there are new leaves and new flowers, so it's quite healthy. The yellow spots just concern me.

It's next to a bright window but gets zero direct sunlight, just a decent amount of bright indirect light.

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Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 5, 2020 12:27 PM CST
The leaf spots are minor and best ignored. It should not need more than a single weekly thorough watering. There is no need to mist it.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care
Netherlands
cactuses
May 6, 2020 3:24 AM CST
Thank you for your help Will!

I'll follow your advice, thanks for the heads up.

Is it necessary to mist any plants? Do you think it actually helps at all?
Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 6, 2020 7:33 AM CST
Misting does not increase humidity significantly, as is commonly believed. The increased humidity lasts only as long as the spray droplets remain on the foliage and that is usually less than 10-15 minutes. Unless you are spraying at least hourly throughout the day and night, the impact is not significant. Humidifiers and pebble trays under plants are better ways to raise humidity.

Although many indoor plant species are native to humid tropical regions, that does not necessarily mean they require high humidity when potted up and kept indoors. Most of the more commonly available indoor plants have proven to do very well in very low humidity as long as they are properly watered. There are a few species that do require high humidity and those are usually sold as terrarium plants.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

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