Serving Southern Jefferson County in the Great State of Montana
Serving Southern Jefferson County in the Great State of Montana
Toadflax: Dalmatian toadflax stem-boring weevils with toadflax flowers in the background. The larvae of these small, skinny black weevils feed inside the stem of toadflax, damaging and eventually killing the plant. We are having moderate to good success with these insects 5-10 years after release.
This article provides an overview of two unique plants, Dalmatian toadflax and yellow toadflax, both of which are noxious invasive species in Montana and a serious concern for the state and its residents. We will explore their appearance and how to identify each plant, how they arrived in the state, what is currently being done to control their spread, and what you can do to help.
To begin, Dalmatian toadflax (Linaria dalmatica) is a 1–4-foot-tall plant with heart- shaped, blue-green, waxy leaves. It has bright yellow, snapdragon-like flowers arranged in pointed clusters. Yellow toadflax (Lina...
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