Spiny sowthistle (Sonchus asper) announces itself with prickly, clasping leaves and a tall, hollow stem. Like wild lettuce, it has a taproot and is easily dug with a dandelion fork or water weeder. Seedlings succumb quickly to non-selective spot sprays; in lawns, broadleaf herbicides (Bonide Weed Beater, Ortho MAX, Bayer Season Long Control) work well.
Key ID tip: sowthistle leaves are spiny and clasp the stem; dandelion leaves are smooth and form a basal rosette.
Spiny sowthistle
Sowthistle (left) vs. dandelion (right)
Dandelions in Periwinkle: Weed-and-Feed Risks Killing Groundcover
Lichens on Trees: Symptom, Not Cause of Decline
Plant Sources: Nurseries for Annuals and Perennials
Controlling Yellow Woodsorrel (Oxalis) in Fescue
Trapping Armadillos with a Drift Fence
Bamboo Control: Barriers, Eradication, and Long-Term Vigilance
Poison Ivy Control: Identification, Herbicides, and Manual Removal
Termite Control: Understanding Methods, Resistance, and Emerging Strategies
Chemical Control of Japanese Knotweed: What Works (and What Doesn’t)
Mastering Lawn Control: Smart Planning for a Beautiful Yard
Eradicating Invasive Privet: A Long-Term Management Plan
Top Mail-Order Sources for Fruit & Nut Trees
Taming the Thorny Smilax Vine: Identification and Effective Control Strategies
Yellow Archangel: Beautiful but Invasive—Eradication Takes Years
Copyright © www.100flowers.win Botanic Garden All Rights Reserved