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Yellow Valley Lupine in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch)

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Click on thumbnails for more info & larger image.
Yellow valley lupine (Lupinus microcarpus) in Upper Las Virgenes Canyon Open Space Preserve (Ahmanson Ranch)
Valley lupine

An unusual amount of annual precipitation not only increases plant populations and growth, it can spawn the growth of plants not usually seen in an area.

On a recent run at Ahmanson, a glimpse of bright yellow along the trail caught my eye. I stopped to take a look and was surprised to find it was a yellow lupine — a variety of valley lupine (Lupinus microcarpus) not usually seen at Ahmanson Ranch.

Radially symmetric whorls of valley lupine flowers. (thumbnail)
Radially symmetric whorls of valley lupine flowers. Click for larger image.

The last two Rain Years have been exceptionally wet in the Los Angeles area. The result at Ahmanson Ranch has been pronounced, with two seasons of growth, out-of-season wildflowers, and unusually large populations of Spring wildflowers. It’s Summer, and upper Las Virgenes Creek still has flowing water.

Valley lupine is native to California, but in this case may be an escapee from a garden, its seed having hitch-hiked a ride to Ahmanson Ranch.

Some related posts:
– Ahmanson Ranch and Las Virgenes Creek After Six Days of Rain
– East Las Virgenes Canyon After a Seventh Day of Rain
– A Second Spring at Ahmanson Ranch
– Looking For Local Impacts of Tropical Storm Hilary