I noticed a problem with one of my sequoias in August:
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| Aug 11, 2021 P2.OR8 |
First, I removed the pressure on the trunk by untying the velcro and several days later slowly pulled it off the trunk, trying to remove as little bark as possible.
Here is side-by-side comparison of the area on a sequoia trunk that was affected by a velcro strap. I use two kinds of straps to support young trees by tying them to bamboo sticks. The first kind is flexible, stretchable plastic straps and the second is half inch-wide velcro straps. Plastic straps stretch and eventually break, allowing the trunks to grow. Velcro straps are much less stretchable and strong enough to damage the growing trees. They do not break and instead the tree bark starts to grow around them.
First picture was taken immediately after the velcro strap was removed. It clearly shows the bottleneck created by the strap.
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| Aug 15, 2021 P2.OR8 |
One month later the tree is showing good progress with fixing the damage. Some tree resin can be clearly seen on and around the wound. The area that was previously squeezed by velcro got thicker and the trunk appears to be recovering overall:
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| Sept 15, 2021 P2.OR8 |
Great that they can recover like that, considering how fragile they are in their first years.
ReplyDeleteDo you see any needles at the tip of the tree dying off this fall and the need to spray them with fungicide? I know that lower branches are dying off as the tree grows taller, but I've noticed needles withering here and there and I wonder if it's a fungi attack. This is for a 5 year old g. sequoia.
Chlorothalonil has been banned in Europe, so I'm thinking of applying Previcur next week.
What do you think?
P.S. I haven't forgotten about the photo with my 400+ sequoias. It's coming next spring. :)
Greets,
Sergiu
Some previous years I had tips and whole branches turning brown and dying off. Not this year. This year the growth is astounding and there are practically no dead branches. There were very minor small branches on one sequoia turning pale brown deep inside the tree close to the trunk but that's as you said, expected. Just to be on a safe side I removed them and sprayed with Chlorothalonil. I did not really find any other fungicide that worked at all. I tried some natural ones before I found clorothalonil but they did not work at all. I have not heard about Previcur, sorry.
ReplyDeleteAre you planning to plant redwoods from patches? - During the season, they have grown well and the roots have spread widely.
ReplyDeleteJust planted my first sequoia in Des Moines Iowa! Cheers!
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