Hello Shadow. This might be of some help.
I too have fallen in love with Seeds of Confusion - the moment I lost my heart to it coming on a mayhem, when I saw a simply HUGE mob of Longbow and, with domination up, fired seeds in and they simply shredded themselves.
I didn't take spores, because I've had bad experiences with AoE sleeps before.
I would suggest staying away from the seeds, sleep does not show very well and most larger teams (dominator heaven) will have massive aoe going on anyways.
I took spirit tree myself, I liked it a lot with some heal & recharge in it. Not so much beneficial for yourself as for the brute taking all the damage. That + aid other allowed my dominator to hold up the brute most of the time with not a single other healer in the party.
Dont know if spore burst draws aggro or not. If not it might be handy for setting up seeds so you dont get wasted while trying to confuse them.
My MA IDs:
Fiend Space: 211464
I have a pretty "agressive" build atm
From Plant I took:
Stangler
Roots
Seeds of Confusion
Vines
Carrion Creepers
Venus Fly Trap
From Thorn I took:
Thorny Darts
Fling Thorns
Impale
Aim
Thorntrops
Ripper
Thorn Barrage
The only power that I find underperforms is Thorn Barrage as it feels quite inacurate and does knockback which plants holds do not resist against. Ripper is a bit slow due to it's long animation time but generally is OK.
The essential Powers for me are SoC and Carrion Creepers making my Dominator into a sort of "aggro management" troller...
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Dont know if spore burst draws aggro or not. If not it might be handy for setting up seeds so you dont get wasted while trying to confuse them.
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Fraid it does as its also got a minor dot dmg element to it.
I still like the AoE sleeps but it can be totally wasted on some teams/players and even an experienced (and good!) player can mess it up if you don't warn in advance your about to use it.
But by no means is it 'essential' power to have.
Spore Burst causes no damage, sorry. And if it caused DoT, it probably would just wake its targets up right away.
In terms of effect, it has the the same range, AoE, duration and recharge as Mind Control's Mass Hypnosis, but costs slightly less endurance.
I can't comment on the aggro-causing thing or not, but I would guess that if it does cause aggro, that may well not be working as intended.
There is some mis-information in that Blood Red Rose guide. I wrote something in May, not claiming it's perfect:
Plant/Thorns
People seem to underestimate the immobs. Seeds of Confusion + Roots + Fling Thorns is a great combination in PvE. I went for a more single target focussed build. Immobs are also useful for AVs and in PvP. It's also worth noting that the Plant Hold Strangler will not take effect if the target is flying/hovering - you need to ground the target with Impale/Roots/Entangle.
The Knockback in Thorn Barrage is cancelled by either roots or entangle, if you don't want the KB. FlyTrap also tends to spam Roots quite often.
The Rose guide mentions Thorn Burst as a good power - I think it's possibly the worst in the set.
Spore Burst definitely *does* cause aggro - that is, if you miss any of the targets they will come after you immediately; the ones you hit will of course be asleep but will aggro on you once they wake up.
Spirit Tree is better than most people think. When slotted you can have one active 100% of the time, sometimes two - yes you can have two active at the same time. It's probably better in a Plant/Psi build though so the regen can stack with Drain Psyche.
I'll have to break from popular opinion and put in a good word for Spore Burst. It does cause aggro, and yes, they're easily woken up, but that power has saved me plenty of times. Aggro'd an extra group you can't really handle? Send them to sleep while you fight the first group.
It does become more situational higher in level, I think, or if you tend to fight in large teams only (where, generally, you can count on someone to Fireball anything you send to sleep a second later). At lower levels though, if you're soloing or duoing especially, you can send a difficult group to sleep, and then start working on the mobs one-by-one, starting with any you missed. With Domination up, it lasts a decent amount of time, I've found. And again, if mobs are accidentally aggro'd, or an ambush comes in while you're fighting a group, it's particularly useful at lower levels when you're less likely to be able to handle two or more groups at once.
I wouldn't take it for PvP unless I had a special hatred of Force Fielders, mind you. 
My thinking on Spirit Tree is that it could be nice for some situations - think AV fights. You're all standing pretty much in one place, for an extended period of time. Regenning faster during a tough fight could save you. However, in PvP you're probably going to be moving around too much to use it, and in normal PvE, particularly at higher levels, you're probably going to be done with groups and moving on before you get that much benefit from it.
I'd go into the other powers, but I've not played Plant to a high level, and haven't played Thorns at all. Listen to Filth though, he has a level 50 Plant/Thorns who I've teamed with a ton in both PvE and PvP, and he's head and shoulders above most Doms I've teamed with.
I consider Skewer a must if you're going to solo at all.
i really want to do a plant/thorn dom 
will be my third dominator hehe next to my ice/ice and fire/fire i like powers to be in theme ^_^ hehe
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I would suggest staying away from the seeds
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Stay away from the power that will carry you through all levels 8 to 50? Crazy, man, that's crazy. And it causes confusion and not sleep. Spore Burst is what you're probably talking about. When people mentioning the Seeds, they mean Seeds of Confusion.
I dinged 44 today with my Plant/Thorns/Mu. Spirit Tree is optional, as you're a Plant Dom you will just skew through the mobs, and you will love Carnies! Those have no resistance to lethal/toxic and they drop fast. The strongmen will throw them around too, lol.
Take Fling Thorns first so you can combine them with Seeds of Confusion, this will make sure you get the exp and they will hit eachother better -> faster killing. As Filth said, the AoE immob is very useful too, as they often get packed when confused, so the AoE-guys get happy when they stay still.
Also note the -def in some of your attacks, Impale has approx 22% -def, which can be enhanced further. This will help against high-def targets like drones and night widows.
Many people wonder what Thorn Barrage looks like, it has the same animation as Power Bolt from Energy Blast-set but instead of energy balls, thorns will go at rapid speed and the target will be KBd back twice depending on the distance/angle you shot the Barrage at.
Tip: if there is a Brute in your team, let him get some Fury before launching the seeds, as they'll be dead before the confusion ends. (mostly)
I'm not to sure about that guide from the US side at all really.
And re' KB on Thorn Barrage, as stated it's very easily negated. I can think of plenty of times it's very useful keeping threats out of reach.
I skipped the immobs and have never really missed them, Impale is good enough for the ST immob and -fly, and between Creepers, Thorntrops and AoE immob spammed by the Fly Trap I don't find my victims getting very far
I have a lvl 16 plant/thorns dominator.
)
I've already found that Seeds of confusion is a 'must have power' (and is rather cool) while the spores is rather... situational to say the least.
I also have Spirit Tree, but... I'm finding it rather naff... the healing is minimal, recharge long, static AoE...
So this lead me to ask for help, but I can't find much (except the spores/seeds discussion a bit back)
I'm a player that often solos and sometimes teams when the mood/invite strikes me.
Which powers 'should' I pick (and why)
Which powers 'should' I just ignore (and why)
Thanks in advance!
(or a rundown of all the powers would be nice
@ShadowGhost & @Ghostie
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