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Avatar for kokumber
May 17, 2020 6:42 PM CST
Singapore
I have a largish vanda growing on our balcony in Singapore (full sun, almost no shade). It's been thriving for 1.5 years now and flowered 2-3 times very nicely.

I was thrilled to see some new growth at the bottom a couple of months ago, but recently, I discovered that the leaves are turning yellow at the bottom, including the babies.

Should I be concerned? Are they getting too much sun?

Thank you!
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May 17, 2020 7:06 PM CST
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Name: Joshua
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Moved to the Orchids forum.

I do not grow Vandas (it would be a challenge here!) but I do have to wonder if it is getting sunburnt.
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May 17, 2020 7:42 PM CST
Name: Big Bill
Livonia Michigan (Zone 6a)
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It is not a Vanda. I suspect that it might be





This is Trichoglottis brachiata. It is related to Vanda but does better in 3-4 hours of sun, not 5-6 hours or more.
It grows warm but needs some shade to escape the strongest sunlight from noon until 4pm.
It may not be this same species but there are 15-20 in this genus. Vanda species and their strap leaved hybrids have leaves that are deeply V-shaped, longer and sharply pointed. They need lots of sun, water and fertilizer.
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.
Last edited by BigBill May 17, 2020 7:43 PM Icon for preview
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May 17, 2020 7:46 PM CST
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Name: Ursula
Fair Lawn NJ, zone 6b
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I am not sure what is happening here?
Vandas like to have their roots fully exposed, not covered in a pot of sorts. I have seen Vandas in Thailand hanging from eaves and porches, swaying in the breeze, usually just anchored in slotted baskets. They like fresh air/good circulation around the roots. Perhaps one might see here a combination of hot sun and improper watering. Those pots look a bit stagnant?
Avatar for kokumber
May 17, 2020 7:50 PM CST
Singapore
Thank you, this is great help. Moved it to a shadier corner.

The pot is more or less how it was when I purchased it 1.5 years ago, untouched.
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May 17, 2020 7:51 PM CST
Moderator
Name: Ursula
Fair Lawn NJ, zone 6b
Orchids Plumerias Cactus and Succulents Region: New Jersey Region: Pennsylvania Native Plants and Wildflowers
Greenhouse Ponds Keeper of Koi Forum moderator Lover of wildlife (Black bear badge) Adeniums
To me, using a pot makes it too stationary! It is better to anchor them and hang them up to provide air movement!
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May 17, 2020 7:56 PM CST
Name: Big Bill
Livonia Michigan (Zone 6a)
If you need to relax, grow plants!!
Bee Lover Lover of wildlife (Raccoon badge) Orchids Region: Michigan Hostas Growing under artificial light
Echinacea Critters Allowed Cat Lover Butterflies Birds Region: United States of America
In Florida I grew Trichoglottis philippinense. It is a smaller plant then brachiata producing "dime sized" triangular flower in light orange to tangerine blotched cinnamon with a white and amethyst lip. It bloomed anytime all year round.
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.
Last edited by BigBill May 17, 2020 7:57 PM Icon for preview
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May 17, 2020 8:02 PM CST
Moderator
Name: Ursula
Fair Lawn NJ, zone 6b
Orchids Plumerias Cactus and Succulents Region: New Jersey Region: Pennsylvania Native Plants and Wildflowers
Greenhouse Ponds Keeper of Koi Forum moderator Lover of wildlife (Black bear badge) Adeniums
Bill, I am growing Trichoglottis brachiata, in maximum sun/light here. It is a large plant, but so far never bloomed. It surely needs a better climate....
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May 17, 2020 8:13 PM CST
Name: Big Bill
Livonia Michigan (Zone 6a)
If you need to relax, grow plants!!
Bee Lover Lover of wildlife (Raccoon badge) Orchids Region: Michigan Hostas Growing under artificial light
Echinacea Critters Allowed Cat Lover Butterflies Birds Region: United States of America
I took mine from Lynbrook to Florida. It bloomed twice in 15 years up there, bloomed yearly down there, 8-15 flowers. It even bloomed in clusters of two flowers per!
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Just give it as much sun as you can! Mine in both places were vertically mounted on cork. Notice a second bud? I took a close up here as the flower is barely 2" at best! But they were long lasting blooms. The color is that intense!!!
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.
Last edited by BigBill May 17, 2020 8:18 PM Icon for preview
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