I've started an outdoor patch under a yew tree (taxus baccata) and now I'm wondering if the mushrooms could 'suck up' the poison from the needles that fall down on the patch.
I've read that they can absorb heavy metals and toxins, so I'm a bit worried I've also read some warnings about picking edibles that grow under yew trees, or poisonous trees\shrubs in general.
Unfortunately I lack the understanding of the processes that are taking place on a molecular level, so it would be great if someone could shed a light on this.
The patch is doing great so far, the myc is very hungry and i hope to see fruits this fall. If there is any risk whatsoever I will have to move it somewher else, and hope it recovers fast enough.

Take culture samples from the yew patch and spread them all over the place. :-) Shroom garden!

The patch is fruiting!
So I would like to bump this thread because I really want to be sure that I can eat those juicy shrooms without worrying that I might die or get some strange side effects from the poison in the yew needles being sucked up by the cyans.
It seems unlikely but I read somewhere that eadible mushrooms that grow under yew trees should be classified as poisonous. Although I don't believe that, I really need some peace of mind in order to enjoy those mushrooms, or share them with friends (this forum is about harm reduction right?).

I'm NOT an expert, but it looks to me like those are ps. oviodcystidia, a close relative to cyanescens. And yes, Virginia, they are psychedelic as hell.

If you want a positive ID, post HERE

Do you mind saying what global region you're in?

Funny, that's what I thought, too... ovoideocystidiata (means 'contains egg-shaped cystidia')

Very powerful shrooms indeed.

Thanks for the input. I doubt that they are ovoids, aren't those supposed to fruit in spring? I'm in Germany btw.
The pics are mostly young fruits and as they get older the cap gets all wavy, I'll post some pics of mature fruit later. They definately look like cyans to me, I bought the spore syringe from a supplier that doesn't list ovoids on ther website. But since I'm no expert too, it could be possible off course.
I would like to repeat my main question: could the poisonous leaf matter of the yew tree (taxus baccata) under which the mushrooms thrive have a negative effect on the experience?
Would it be better to post this question on the shroomery?

I can't speak to the possible contam from the yew, but I've heard similar for edible spp.

I missed you saying they were cultivated. Good job! I think ovoids grow where I am through early fall, PNW.

And yeah, I'd post to shroomery with it.

According to a well respected (amateur?) mycologist on the shroomery, the toxins are broken down by the mushroom. So if I make sure that no leaf matter makes it in my mushroom tea everything should be fine.
Anyway I think I will start with 1g just to convince myself that this is actually true...