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Heat and bud blast

This is a discussion on Heat and bud blast within the General Orchid Culture forums, part of the Orchid Culture category; It hasn't happened yet, but I know that excessive heat can cause bud blast. Here ...

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  1. #1
    sand_tiger86's Avatar
    sand_tiger86 is offline Senior Member
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    Default Heat and bud blast

    It hasn't happened yet, but I know that excessive heat can cause bud blast. Here in Texas (my high-light lovers are outside all day) the temperature stays in the mid 90's to low 100's during the afternoon, and that's exactly when they're hit by sun. I, of course, I have a fan blowing on them at all times and they don't burn or anything. The hot/sunny/humid conditions have lended themselves quite well toward new root and foliage growth, but I'm terrified that little buds just wouldn't be able to tolerate it. When (and if) mine start spiking in the summer, would it be best to move them inside on a windowsill to avoid any bud blast? I'll be damned if all my hard work goes to hell in a hand basket.

  2. #2
    tucker85's Avatar
    tucker85 is offline Senior Member
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    It is true that excessive heat can cause bud blast in some orchids. But moving an orchid to a different environment when it's in bud is just as likely and probably more likely to cause bud blast. Sudden changes in environmental conditions is mentioned most often as the cause for bud blast.
    What I do is keep notes on my orchids and referring back to them I find that it's the same few orchids each year that tend to suffer from bud blast. Then I can slightly change the environment that I grow those particular orchids in until I have success blooming them.

  3. #3
    sand_tiger86's Avatar
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    Thank you!

    BUT, I was leaning more towards bringing them in before buds actually develop. Like when you just start to notice the spike beginning. Though, I guess it may abort the spike in that case right?

  4. #4
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    I usually bring mine in as soon as they start...not so much because of the heat, but on my patio they are subject to both high winds and squirrels...

  5. #5
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    If the plants are growing comfortably at that temperatures then it is likely that it will not cause any effects to the buds also.

  6. #6
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    Default

    i tend to get more bud blasts from moving them into another condition than letting them grow outdoors. if they are tropical plants, they are probably adapted to heat and humidty. i wouldn't worry too much unless you are growing odontoglossums or something. give them a year, and if some do blast, then you know which ones to worry about next year. maybe just try to give them a little shading outside.

  7. #7
    sand_tiger86's Avatar
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    Thanks!

    I do actually have a Rossioglossum Rawdon Jester, but he stays inside.

  8. #8
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    Our temperatures are in the 90's this week with the "feel like" temps well over 100 nearly every day now. I have a large cattleya that just lost a couple buds. I got water down into the sheath while the buds were small. If I had been a little more careful when watering it wouldn't have happened. And fans usually are the answer for high heat more than bringing them in. I've lost more buds that way...I don't do it anymore.

  9. #9
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    I would agree with the general opinion that moving them once they start to spike is probably more a reason for bud blast than heat outdoors alone, as long as they aren't suffering obvious heat stress they should be fine. Once the buds start to open, I believe it is fine to bring them in to enjoy the blooms at that time. I've had at least 3 plants blast on me by moving them in too soon. Seems like such a waste after waiting so long, and knowing how much longer you'll need to wait for 'Next Time'!
    Cheers,
    Tony

  10. #10
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    Timely discussion for me! As I posted earlier, my sharry baby sweet frangrance now has nine very long spikes. It is growing outside here in Houston and the the temp as mentioned is hot. I was considering bringing it in but I think I will leave it outside now.

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