Her Ability passive is Useless,Absolutely Horrible, It just delays her death timer and the only utility it has is sniping a limping enemy once in a blue moon
Yes to the ability being bad, no to the delay. All death timers start when a champion actually dies, not when their post-death effect ends. The only exception is that if your respawn timer is extremely low, like very early game, it'll give you an extra 2 seconds.
Her Plants,they die too quick for no reason (Hello DoT,sunfire cape and minions) and dont prioritize champions on range
Not sure what you mean here. They prioritize targets that Zyra hits. They're also not meant to be that durable. They're a bonus to her damage, not a primary source of it. Zyra gets her plants in addition to her spells, whereas Heimer has his turrets as a spell in itself.
Her E is too telegraphed, can be easily dodged from miles away
Entirely intended. It's an AOE root with almost 2 seconds of duration. It's supposed to be somewhat easy to dodge if you're able, because it is very devastating when it lands.
Remove Current Passive
New Passive:Nature's Wrath
Effect:Every 3 levels, Zyra Plants gain 1 HP and Stay active 2 seconds longer (Level 3/6/9/12/15/18)
I'm all for the passive change, but this isn't the replacement she needs. She's not Heimer. Her plants are not the emphasis of her kit. She's a plant master. Her pets are there to support her, rather than the other way around for Heimer.
Make W Store 1/2/2/3/4 Seeds Per level, and max amount of seeds to 5
Oh dear gods no. That many plants out would be flat out obscene. I mean, that's not even remotely funny.
Make her E Animation Faster
Already discussed this, no point going back.
Honestly, I think your hearts in the right place, but it sounds like you simply don't know enough about Zyra to try and balance her.