Photo: Diane Edwardson, April 24, 2009. Definitely a thistle above the Viaduct Footings. (Click on photo to enlarge.)Earlier this month, a mystery plant sprouted above the Viaduct Footings. A bunch of them also sprouted around the Heritage Coast Live Oak in the Semi Tropic Spiritualists' Tract. Mystery solved: it appears to be a non-native and invasive, Milk Thistle (Silybum marianum). It is much larger than the Italian Thistle on the Semi Tropic Spiritualists' lower lot.
