Sorry your conifer is completely dead.

And just an FYI, conifers can mask death from dehydration for up to six months. The damage is done, but you can't see it till it starts turning brown, which always takes at least a month. So you may have let it get dry sometime in the summer. I understand these are very sensitive to that, though I haven't grown one.

You don't say where you live, but it looks like it dried out sometime last Summer or Fall. It's dead as Embothrium said.

Im from the Netherlands, and we had a really hot summer so i gave him like 4,5L water a day. The drainage is ok that i know. Its still green in the top, so hope there is still a chance?

Even if it dies, my hat's off to you for getting this far. I'm trying to grow it as well, but I already lost so many in the seedling stage, that I'll be glad if even one survives.

Yeah, they're said to be very finicky outside the normal range, even for those of us much closer to the range.
So Norbert is on the money, you did well to have gotten it to that size.

Is it potted? The combo of a root-filled pot, a heat-retaining brick wall behind, and what looks to be other masonry and rock in the vicinity all made this a tough growing situation for this tree. Their native growing conditions are tempered by cool waters of the Pacific moderating extremes of temperature or low humidity.

They are stunning trees in their native environment.

Yes its potted, but is that the problem? I have more Sequoia that are potted but they are a bit smaller and are nice and green. But for this Seqouia its over? there is nothing i can do anymore?

Nope. Sorry, but it is dead. Nondeciduous conifers with that much brown are inevitably dead or dying. It is non-reversable. And as dbarron notes, it has been in the process of dying for some time.

Ok, thanks for replying. Hope the others don't die. I wait till it's spring. And if nothing happens positively i give up

Something else worth considering, it could be the just opposite. Slow draining, peat based potting soils, or even native soil that holds too much water, could be the culprit and what you're seeing now is the late stages of this.

Sequoia, grown in pots, like potting media that drains readily. Fast draining media carries water and air/oxygen through the root system and out the bottom, at a fairly fast rate so the water doesn't stagnate around the roots and smother them.

A bark based media is what you want. Even a cactus mix would be better than the cheap, peat based mixes or native soils.

[Link to 5-1-1 bark based mix:[(https://www.houzz.com/discussions/recipe-for-5-1-1-mix-dsvw-vd~3070255?n=7)

Potted plants are more difficult to keep healthy and take more work. Roots in a pot don’t have the shelter of a mass of soil like plants in the ground, so there are wider swings in temperature and moisture. They need repotting periodically since potting media breaks down and loses the pockets for air and moisture and also because the plants’ roots fill the pot so that they need root pruning and repotting to a larger size periodically. You have to provide all the nutrients in the correct amounts, unlike plants grown in the ground. I don’t know what kind of potting media you used or what sort of care you took with the plant, and I also have no clue what the temperature range is in the Netherlands, but certainly a potted plant without the right potting media and care is more prone to dying than one in the ground.

Sequoiadendron grows wild in the high mountains of eastern California well away from the coast - it's never going to be bothered by heat in the Netherlands, unless the climate there becomes a lot hotter than it is now.

https://www.srs.fs.usda.gov/pubs/misc/ag_654/volume_1/sequoiadendron/giganteum.htm

Rather than the weather there being inherently impossible for it this specimen will have been lost due to how the rooting environment within the container was managed.

agree with all above ...

but i wonder why it seems a bit crocked in the pot ... if there was a transplant within the last year ... perhaps that is when the stresses started???

who knows ...

i also liked babs answers with the surrounding micro climate .. and how that might have affected a large potted TREE ...

ken

wait.. title.. 3 years old ... might be some over fertilization issues involved with the potted plant ...

as noted by embo.. with evergreen plants.. it is often hard to date when the problems started .... because they can stay 'green' ,.. long after they died ... especially if death happened in fall.. and winter suspends animation ...

ken

Thanks guys, well i had a smaller Sequoia in a smaller pot that had the same issue. I died pretty fast but that was the before the fall started ( around September ) when the smaller one died I took a look at The bigger Sequoia ( on te pictures ) but there was just a really little bit of brown at the bottom of the tree. Maybe it started at the same time? But the bigger one was 4 times his size. I wonder if it has to do with the ground? Or because it was in full sunlight? Near wall? But i cant imagine it hadn't enough water.

These pictures are from October last year. I went to a garden centre, they told me i didn't gave enough water but it will survive they said... So i gave the seqouia more water but it didn't work.

From what I understand:

A waterlogged potting soil can kill the fine roots responsible for water uptake (because roots need air too!).

That damage can make it hard for your plant to take up water, no matter how much water you provide.

Plant dies from lack of water despite there being plenty of water available.

What potting soil did you use?

Try metasequoia if you have the vertical room. When in doubt water it, its very difficult to overwater.

i used universal potting soil. maybe the problem?

" i used universal potting soil. maybe the problem? "

Yes absolutely. We've had maybe 10 threads, with the same problem, in the last few years.

See my previous post.

thanks! that clear information!

lShe is back to live, she started growing again, and looks better every day now, the top is still nice and green so see what will happen.

That's great! Can you share what you did differently? If anything?

It's alive, it's alive!

Problem is, it's on its last legs.

Actually nothing, i gave it water when it was dry, sometimes you have to be lucky and just be patience. Hope it stays like this. I guess it was to dry last year. Wont happen again.

' i gave it water when it was dry, '

That's the key!

Water when it needs water.

Looks like it's in the ground now, instead of a pot.

Much happier I'm sure.

;-)

Yep, that's true. I bought a house 3 years ago with a nice garden. Perfect to plant the tree in there, so I planted the sequoia 3 years ago when it was still looking like it was barely alive, but this year is wonderful. She's like 3m / 6ft tall now.

Even my neighbours are jealous.

She's free from her cage now 😉

haha!

Not just a nice tree, it has a story behind it. ;-)

So you don't short yourself:

Sorry, I been in engineering too long. lol

Thanks, it's nice to get a meaningful update on an old thread.