Just a half hour drive from downtown Tucson a wilderness awaits in the Rincon Mountains of Saguaro National Park on the Tanque Verde Ridge Trail. 
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I neglected to mention that milkweeds are no longer in their own family Asclepiadaceae, but have now been included in the dogbane family Apocynaceae....
The villain in this show is the grass Enneapogon cenchroides or soft feather pappus grass. There are many invasive exotic grasses that have changed...
I’ll let you know how this all goes. I have many acorns to plant, but I like growing little oaks and we’ve done this...
