You'll find scuds, damselfly nymphs, and adult damsels getting the most interest from trout. For the adult damsels, cast a Braided Butt Damsel or Stalcup Adult Damselfly to the edges of the cattails.
Tricos should start hatching by mid-month, so keep an eye out for emerging bugs and spinner falls. If you spot one, tie on a size 20-24 Poly Wing Trico Spinner or similar pattern.
Another late-month event is hopper fishing. Ants are another terrestrial that is eaten by Rocky Ford's trout.
You may find some Callibaetis hatching in the upper end.
As the month progresses, you may find access becoming difficult due the growth of reeds that line the creek's banks. When you pass through these you also risk picking up a tick, so check your body carefully after you've been fishing here and make sure you didn't pick up a hitchhiking arachnid. Keep an eye out for rattlesnakes, too.
For more on July tactics and flies, see the Rivers in General forecast