Houseplants forum→Calathea ornata new leaves not full developing!

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Basmah
Jun 5, 2020 4:09 AM CST
Hey everyone,

My calathea ornata is pretty healthy for the most part. But I noticed that some of the leaves on the inside have stopped developing and their edges turn crisp and the leaf stays light green or yellow. I water once every two weeks or when the soil feels dry... I have a humidifier going and it's grouped with other plants. It's not in direct sun but gets a fair amount of light. Is this simple a normal thing or does it need any adjustments?
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Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
Jun 5, 2020 8:10 AM CST
How do you determine when to water and how much do you provide?
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

Basmah
Jun 5, 2020 9:15 AM CST
WillC said:How do you determine when to water and how much do you provide?


With my calatheas I try not to let them dry out completely so I keep them evenly moist. I touch the soil or stick my finger in it just a bit. But this plant has some Spagnum moss as a top layer and seems to be in very aerated soil... for a plant this size it always feels kind of light even when I've just watered it. My other calatheas are in a denser soil. So even when I touch the plant it always seems to be on the dry side... so you think it's an under watering issue?

Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
Jun 5, 2020 3:12 PM CST
Can you remove the sphagnum moss and take a photo that shows the soil?

When you probe the soil with your finger do you probe all the way through the moss?
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

Basmah
Jun 6, 2020 1:38 AM CST
WillC said:Can you remove the sphagnum moss and take a photo that shows the soil?

When you probe the soil with your finger do you probe all the way through the moss?


Yes I do probe all the way down the soil and it just depends if I feel moisture so it gets watered once every two week sometimes longer? I took a photo of the soil to show you.


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Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
Jun 6, 2020 7:51 AM CST
It appears to be potted in a porous peat-based potting mix, so you may be letting it get too dry. If it is properly potted, no deeper than the top half-inch of soil should feel dry just before you water it thoroughly. That should happen about once every week or so, never two weeks or longer unless it was recently moved into a larger pot.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

Basmah
Jun 6, 2020 1:25 PM CST
WillC said:It appears to be potted in a porous peat-based potting mix, so you may be letting it get too dry. If it is properly potted, no deeper than the top half-inch of soil should feel dry just before you water it thoroughly. That should happen about once every week or so, never two weeks or longer unless it was recently moved into a larger pot.


So do you recommended that I repot it or just increase watering?
Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
Jun 6, 2020 5:02 PM CST
No reason to repot. But you may need to water sooner before the soil gets dry more than an inch down from the top.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care
Name: Gina
Florida (Zone 9a)
Tropical plant collector 35 years
Region: Florida Tropicals Aroids
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Gina1960
Jun 6, 2020 7:33 PM CST
This is a humidity issue. You need to supply more ambient humidity for your plant
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Basmah
Jun 6, 2020 11:32 PM CST
WillC said:It appears to be potted in a porous peat-based potting mix, so you may be letting it get too dry. If it is properly potted, no deeper than the top half-inch of soil should feel dry just before you water it thoroughly. That should happen about once every week or so, never two weeks or longer unless it was recently moved into a larger pot.


So do you recommended that I repot it or just increase watering?

Basmah
Jun 6, 2020 11:34 PM CST
Gina1960 said:This is a humidity issue. You need to supply more ambient humidity for your plant


I use a humidifier and add pebble trays but the humidity is always at 45-50 percent. Do I need to raise it higher?

Basmah
Jun 6, 2020 11:34 PM CST
WillC said:No reason to repot. But you may need to water sooner before the soil gets dry more than an inch down from the top.


Alright thanks! I'll do that! Appreciate your feedback!
Name: Gina
Florida (Zone 9a)
Tropical plant collector 35 years
Region: Florida Tropicals Aroids
Image
Gina1960
Jun 7, 2020 6:53 AM CST
Basmah said:

I use a humidifier and add pebble trays but the humidity is always at 45-50 percent. Do I need to raise it higher?


Calathea prefer a humidity more towards 75-80% to look their best
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[Last edited by Gina1960 - Jun 7, 2020 6:53 AM (+)]
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