Lamb’s quarters can be a real contender in the field despite susceptibility to a variety of active ingredients. A species of the goosefoot family, lamb’s quarters (Chenopodium album L) require early and active management. Why it matters: Lamb’s quarters are extremely common, emerge early and can significantly reduce yields. Lamb’s quarters are a summer annual […] Read more
Weed of the Week
Weed of the week: Lamb’s quarters
It’s important to get ahead of this prolific, early-growing species
Weed of the week: Canada thistle
Canada thistle has more than one way or reproducing, making it tougher to control
It takes more than one field action to control Canada thistle – a prolific weed with a couple tricks up its sleeve. Also called creeping thistle and field thistle, Canada thistle (Cirsium arvense) is a perennial weed that reproduces both by seed and by horizontal roots. Dense patches of new shoots can form from these […] Read more
Weed of the week: Waterhemp
The challenging weed rapidly develops resistance, so rotating herbicides is critical
Waterhemp can be controlled through a variety of approaches, but identification is often difficult. The weed — a non-native member of the pigweed family first discovered in Lambton County in 2002 – is an annual plant producing tens of thousands of seeds every year. It features narrow leaves, wavy leaf margins, and (almost completely) hairless […] Read more
Weed of the week: Redroot pigweed
Economic thresholds run from five to 15 plants per 10 metres of row
Redroot pigweed can be a tough customer. But don’t wallow in despair – control is possible. Redroot pigweed (Latin name Amaranthus retroflexus) is an annual weed found throughout Ontario in cultivated fields, gardens, pastures, waste places, roadsides and, according to the Ontario Ministry of Agriculture, Food and Rural Affairs, nearly any other disturbed area. While […] Read more
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