Tansy Ragwort, Senecio jacobaea

This introduced weed is toxic to livestock and commonly found West of the Cascades.

Red Clover, Trifolium pratense

This non-native perennial was found growing along a logging road in SW Washington.

Red Columbine, Aquilegia formosa

I found this flower along a path in Lucia Falls County Park, along the East Fork of the Lewis River, in Southwest Washington. Indians had several medicinal uses for this plant.

Flower bud:
 

6-5-14 Update: Found a red one today

6-7-16 update: Last year I transplanted this specimen and it finally bloomed this year