Which of the following is a summer annual weed?

• A. Foxtail
• B. Dandelion
• C. Common Chickweed
• D. Henbit

Answer: (A)

This question is testing weed life cycles—whether a weed is a summer annual, a winter annual, or a perennial. Foxtail is a summer annual weed: it germinates when soils warm, grows quickly through the heat of late spring and summer, produces seed by late summer, and then dies with frost. That pattern fits a summer annual.

Dandelion is a perennial weed, persisting with a deep taproot and regrowing each year, so it isn’t a summer annual. Common chickweed and henbit are typical cool-season winter annuals: they germinate in cooler temperatures, grow through winter, and complete their life cycle by spring, not through the summer.