That Ultimate looks strange, maybe there's not enough light? My friend's Guatemala sativa looks similar, the pistils don't want to turn brown and the buds refuse to swell after two months of flowering. Maybe there's been too much nitrogen at some point? Or maybe huge plants just take longer to ripen.
[edit] Then again my AutoXtreme looked similar, maybe DP's strains are just really hazey and foxtaily?
[edit] Then again my AutoXtreme looked similar, maybe DP's strains are just really hazey and foxtaily?