
Spring has already come and gone, but those who know where to look can still find wildflowers in full swing.
Near the summit of Mount Diablo lies the Mary Bowerman Trail—an easily accessible space—where the cooler weather of higher elevation delays the end of the wildflower season.
The entire loop of the Mary Bowerman Trail rests just below the Mount Diablo Summit, which is 3,849 feet above sea level.
About a third of the Mary Bowerman Trail is ADA accessible up to the Ransome Point overlook, with the remainder of the trail accessible by foot.
There are 14 stops, following the Mary Bowerman trail guide (PDF) that you can obtain at the Summit Visitor Center or pick up at the trailhead.
Despite the rugged and rocky nature of the summit, there is still a significant amount of plant diversity, and right now is one of the best times of the year to appreciate it.
We’ve pulled together a list of some of our favorite finds in this area for you to keep a look out for. Here are 12 wildflowers that are known to grow along the Mary Bowerman Trail.
1. Red Larkspur, Delphinium nudicaule

Photo by Scott Hein
2. Few-Flowered Collinsia, Collinsia sparsiflora

Photo by Scott Hein
3. Butterfly Mariposa Lily, Calochortus venustus

Photo by Kyle Nessen
4. Johnny Jump Up, Viola pedunculata

Photo by Scott Hein
5. Pink Spineflower, Chorizanthe membranacea

Photo by Scott Hein
6. Canyon Liveforever, Dudleya cymosa

Photo by Alex Heyman
7. Red Ribbons, Clarkia concinna

Photo by Alex Heyman
8. Coyote Mint, Monardella villosa

Photo by WindSurfNerd
9. Bitterroot, Lewisia rediviva

Photo by Scott Hein
10. Wind Poppy, Papaver heterophyllum
Photo by Alex Heyman
11. Gypsum Springbeauty, Claytonia gypsophiloides

Photo by Scott Hein
12. White Popcorn Flower, Plagiobothrys nothofulvus

Photo by Scott Hein