What plant is this?!

Nickolas

Active Member
Joined
Apr 24, 2020
Messages
130
Location (City and/or State)
Pennsylvania
This has been around all my life, but I have no idea what it is. Does anyone know? It is the weed with the purple flowers.

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Maro2Bear

Well-Known Member
5 Year Member
Joined
May 29, 2014
Messages
14,713
Location (City and/or State)
Glenn Dale, Maryland, USA
Aaagh yes, we have it all over here in MD too. I always forget the name. Let me do some quick checking.

ok....dugh....it’s Smartweed!


Life cycle: summer annual

Growth habit: grows from 1 to 4 ft. tall; leaves alternate, lanceolate, smooth margins, sometimes with a purplish thumbprint marking the 2 to 3 in. leaf; conspicuous ocrea surrounding point where petiole meets stem
Reproduction: seeds from pink flowers in the spike-like clusters
Conditions that favor growth: common weed of nursery crops and landscapes; rarely a problem in turfgrass; tolerates a range of soil types and conditions
Cultural control: Remove young plants before flowers form
 
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