PlantsSorghum→Johnsongrass (Sorghum halepense)

Common names:
Give a thumbs up Johnsongrass
Give a thumbs up Johnson Grass

General Plant Information (Edit)
Plant Habit: Grass/Grass-like
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Dry Mesic
Soil pH Preferences: Strongly acid (5.1 – 5.5)
Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Slightly alkaline (7.4 – 7.8)
Minimum cold hardiness: Zone 2 -45.6 °C (-50 °F) to -42.8 °C (-45°F)
Maximum recommended zone: Zone 11
Plant Height: 1 to 8 feet
Fruit: Showy
Other: Panicles of purplish seed heads containing shiny, oval reddish brown seeds.
Fruiting Time: Late summer or early fall
Bloom Size: Under 1"
Flower Time: Summer
Late summer or early fall
Underground structures: Rhizome
Uses: Erosion control
Will Naturalize
Wildlife Attractant: Butterflies
Resistances: Humidity tolerant
Drought tolerant
Pollinators: Wind


The Excellent SorghumThe Excellent Sorghum
By dave on April 25, 2016

Sorghum is in the grass family and is closely related to corn. In fact, when it's young it is nearly impossible to differentiate it from corn. If anyone ever tells you they have volunteer corn in their garden, you can sound smart by guessing that it's sorghum.

(Full article23 comments)
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Discussion Threads about this plant
Thread Title Last Reply Replies
This is impossible to get rid of by evoamac Jun 11, 2020 6:24 PM 4
Volunteer plant needs ID by IJsbrandtGA Jul 20, 2021 6:37 PM 24
What is this? by chelsead Apr 29, 2016 6:12 AM 4
unknown grass by jmorth Aug 12, 2013 2:01 PM 9
Welcome to the Heirloom Tomato thread! by Melissa May 31, 2019 12:24 PM 3,265

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