Is Ezo spruce particularly sensitive to sunlight?

[HandyGringo]

I have a bunch of these seedlings and they're all showing signs of sunburn, I've put them in a more shaded position for now. Just wondering if it's to be expected or not. Thanks!

 

[leatherback]

Where do you see signs of sunburn? Or is this just an example of a spruce?

 

[HandyGringo]

Where do you see signs of sunburn? Or is this just an example of a spruce?

Maybe what I'm seeing isn't sunburn then, I was talking about the dead needles

 

[Wires_Guy_wires]

Needles on most spruces last about 1-2 years. So I think, like Leatherback, that it's probably natural shedding.

 

[bdmatt]

Honestly just looks like older growth shedding.

 

[HandyGringo]

Needles on most spruces last about 1-2 years. So I think, like Leatherback, that it's probably natural shedding.

Honestly just looks like older growth shedding.

Gotcha! Thanks for clarifying

 

[Shibui]

Agree with above. Sunburn almost always occurs on the top or outer edges where sun is strongest. There can be other causes for oldest needles to die but most usual is natural senescence which usually means nothing we can do to prevent this.

 

[Charlo]

I have a bunch of these seedlings and they're all showing signs of sunburn, I've put them in a more shaded position for now. Just wondering if it's to be expected or not. Thanks!

LOL! I like your handle Handy Gringo!

 

[Deep Sea Diver]

The answer is Ezo spruces can handle full Sun, but not extreme heat. When above 30C put in half shade.

Also moss the surface of the media really thick and water well. This will be similar to Ezo natural habitat.

Cheers
DSD sends

 

[rockm]

Direct sunlight is essential for Ezo and most all conifers. As said heat is a problem with Ezo spruce. They grow in exposed sites in pretty rugged areas, but areas cold to temperate, so hot roots aren't a friend.