Ask a Question forum→hydrangea tree

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Las Vegas NV
May 31, 2020 1:02 PM CST
my Hydrangea tree seems to not doing well, the leaves curl inward, and are turning yellow. what am I doing wrong. I give it water twice a day. So I thought it might be two much. I have it on my screened in pouch in the back yard which faces south. so it gets
sun all day long. but not too much behind the screen. they are solar screens. but I can see the sun still coming through the screen. I have lots of buds, but no flowers yet. Can you help me please. I haven't transplanted it yet, because I want to keep it small for my patio. is that wrong.

Thank you

Thumb of 2020-05-31/aceswest/68a9db

Name: Luis
Hurst, TX, U.S.A. (Zone 8a)
Dog Lover Region: Texas Salvias Roses Hibiscus Plumerias
May 31, 2020 1:30 PM CST
Paniculatas tend to show their legs by dropping leaves when they are heat stressed. This can be caused by high temperatures (how high are the temps in the room), high winds (the roots are near the top 4" of the soil, which means the soil dries out fast where the roots are), lack of moisture and lack of water. Hydrangeas typically do not perform well inside the home for long periods of time. You can park them inside during winter though but then you should bring them outside.

Hydrangeas will get heat stressed when temperatures are regularly above 85F and-or it is very windy. I would expect paniculatas to yellow out some leaves as a result. The plant is loosing moisture through the leaves faster than the roots can absorb water so it gets rid of leaves that cause it to loose moisture.

Watering twice a day sounds excessive. I had Hydrangea Pistachio in a pot outside during the Summer (temps above 95-105) and it wilted during the day time. To see if it was fine, I checked the soil. I made sure to locate it where it was not veeeery windy, where it would get only morning sun (shade starting at 10am-11am for the rest of the day) and monitored the soil moisture almost daily in the mornings. If it wilted during the day when temps were in their daily 100s, I tested the soil to make sure it was moist. If it was moist, I let it be. In theory, if the soil is 'moist enough', the plant should perk up on its own at night and look fine in the morning. If it does not look fine in the morning then it did not have enough soil moisture... so I watered it then. You can test soil moisture with your finger early in the morning (6-8am): insert a finger into the soil to a depth of 2-4" and water if it feels dry or almost dry.

Paniculatas in most of the country can be in full sun but in places with harsh sunny conditions like NV, Texas, parts of the southeast, they need afternoon and evening shade. Again, make sure that the temps in this room and actually not higher than the temps outside.

It would be early to see flower buds so I suspect you only have leaf buds. Flower buds are invisible and when they open, they look like tiny broccoli heads.
[Last edited by luis_pr - Jun 2, 2020 4:21 AM (+)]
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Las Vegas NV
Jun 1, 2020 10:51 AM CST
Thank you for answering my Question. I moved the Tree last night to a area where it gets morning sun. Its cooler on my patio because I have solar screens. But still get a breeze. I'm watching it to see what happens. I'm trying to keep it moist while the weather is so hot. Thank you for your help, you may have saved my plant, that is so beautiful.
Name: Bea
(Zone 8b)
Ponds Hellebores Composter Herbs Keeper of Koi Keeps Horses
Enjoys or suffers cold winters Aquaponics Greenhouse Clematis Lilies Cut Flowers
Jun 1, 2020 11:09 AM CST
Peegee Hydrangea paniculata. Check the branch/limbs by breaking off small limbs or scrape off bark to cambium layer. If they show green they are still alive. Probably stressed from weather issues and looks dehydrated. Plant it in a shaded area and soak the hole well before planting. The pots get hot and cook the roots or winter freeze. Best to plant . These tree trunks will grow taller and wider and healthier if planted. Pots will cause them to eventually become root bound. Plant in shaded area in afternoon and protected area from winds. Dig a saucer around the base along the outer drip line of the tree. Or use water rooter to punch thru soil and water deeply around the tree taking care to not hit the roots. Keep watered they don't like to dry out.
Then it's a wait and see. It could recover with care and shaded area. Hopefully it has no pests , time will tell . Good Luck.
I’m so busy... “I don’t know if I found a rope or lost a horse.”
[Last edited by bumplbea - Jun 1, 2020 11:18 AM (+)]
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