I have quite a few of Linda's plant sets (Incredibly Lush), along with a lot from Tony Mezaros (Realm Arts) and Martin Frost.  All of them come into a custom ecosystem wonderfully and can be scaled to your liking.

IMHO, you can't go wrong with plant packs from any of these creators.

Hugz from Phoenix, USA

Victoria

Remember, sometimes the dragon wins. Correction: MOST times.