Thanks for that. Nice to see people are noting stuff. We are acutely aware of that Yarrow. Its been at Pete's camp near the dam, straddling the border for a century of so we think. We have been actively controlling for about 30 years. Area has been quarantined for 20 yearsish, so it doesn't spread and the density is reducing but distribution is the same. We are winning. We won't give up. :) Darren Roso Senior Ranger ph. 0439 308 270