So its 81 degrees here in NY, with a "feels like" of 85 and my outdoor digital thermostat is reading 109. What temps are the trees experiencing? I assume its not the "feels like" temp as the trees have no nervous system, but have to imagine the soil is over 81 degrees in the sun. Thoughts?
What Temps do the Trees Feel
- Thread starter dbonsaiw
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BobbyLane
Imperial Masterpiece
If you have a lot of trees in development, isnt intense prolonged heat what you want though. Im not good at doing the numbers but I think that translates to around 27c here, which is perfect temps for strong growth, since it gives us the chance to water and apply feed more, the heat induces multiple flushes of strong growth. When we had heatwaves here the temps stayed at around 27-35c for 2 straight months, no rain. We had unprecedented growth for our trees, but many people were still complaining. In the UK its like our summer is already over, we had a week or two of temps around 25-28, a few days where it hit 30c but now we are back in the low 20s. Cloudy days.
No complaints here. This weather is wonderful.
Paradox
Marine Bonsologist
81/85 isnt a bad temperature for trees.
The 109 reading on your thermometer is questionable and is probably because of the placement of the probe?
If its in a sunny spot or a spot that gets radiant heat from a nearby surface, it could give you a false reading.
I have trees growing well here right now
Really no complaints on the weather. My trees are doing great (other than the ones I've overworked) and the fruits and veggies are coming in. Been taking in a bowl of strawberries every morning and the peas, jalapenos and banana peppers have been coming in. Even got a cucumber this morning. Starting to see the heirloom tomatoes, cayenne and habanero peppers.
Baku1875
Shohin
some of my very very young bougies droop in the heat and i gotta move em to the shade and mist them, but once they get beefy roots they can take it.
It would be interesting to put a precision temperature+humidity probe on the lower trunk, and underneath leaves near the apex to measure transpiration vapor temp vs trunk temps, maybe edge of the pot as well to get a reading of radiant heat being absorbed by the ceramic
It would be interesting to put a precision temperature+humidity probe on the lower trunk, and underneath leaves near the apex to measure transpiration vapor temp vs trunk temps, maybe edge of the pot as well to get a reading of radiant heat being absorbed by the ceramic
Dav4
Drop Branch Murphy
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Trees/plants love high relative humidity when it's warm outside. Warmth with low humidity can be stressful for trees recently re-potted or with root issues as they've got to pull more water out of the soil to meet transpiration needs. Low to mid 80's F with decent humidity is perfect for good growth as transpiration decreases with the higher humidity. Of course, fungal issues can pop up with constant high humidity... 
Michigan Tree Murderer
Masterpiece
Next time I'm grilling (Tuesday) I'm going to put my internal temperature gauge into a pot. Check my ribeye & then a TBF
vp999
Masterpiece
Im gonna ask my trees next time I go out on a smoke break.
Srt8madness
Omono
80 degrees lol....it won't be 80 again until October 
Gabler
Masterpiece
Trees, like humans, rely on evaporative cooling for thermoregulation, so the heat index would technically apply, but it also seems to me that drying out is a greater risk to the tree's health than high temperatures, so it's also kind of an apples and oranges comparison at the same time.
Mikecheck123
Omono
The most important thing about temperature is it's exponential relationship with evaporation.
So it's less that trees are "feeling" the temperature and more like the trees are reacting to sudden loss of available moisture.
In my zone, it means that at 80 I water once, 90 twice, and 100 three times. Or I start to see a lot of wilting.
So it's less that trees are "feeling" the temperature and more like the trees are reacting to sudden loss of available moisture.
In my zone, it means that at 80 I water once, 90 twice, and 100 three times. Or I start to see a lot of wilting.
vp999
Masterpiece
Humidity plays a big role too , it’s 90 here today but all my pot are still damp from yesterday’s watering, akadama are all dark brown.
Not sure how you guys are holding up in the Texas heat, let alone taking care of the trees.
