Setaria Species, Broadleaved Bristlegrass, Highland Pitpit, Knotroot, Palm Grass

Setariapalmifolia

Family
Poaceae (poh-AY-see-ee)
Genus
Setaria (set-TARE-ee-uh)
Species
palmifolia (palm-ih-FOH-lee-uh)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Grown for foliage
Evergreen
Herbaceous
Height
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)
Spacing
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
Hardiness
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Cream/Tan
Bloom Time
Mid Fall
Late Fall/Early Winter
Other Details
Category
Ornamental Grasses and Bamboo
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing the rootball
From seed; direct sow outdoors in fall
Direct sow as soon as the ground can be worked
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Bag seedheads to capture ripening seed
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Berkeley, California

Pasadena, California

San Diego, California

Brooksville, Florida(2 reports)

Gainesville, Florida

Jacksonville, Florida

Plant City, Florida

Yulee, Florida

Makawao, Hawaii

Mandeville, Louisiana

Stilwell, Oklahoma

Florence, South Carolina

Houston, Texas

show all

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Gardener's Notes:

4
positives
1
neutral
1
negative
Sort By:
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S
Stilwell, OK (Zone 7a) | January 2016 | positive

I germinated seed purchased from Onalee, had very good germination rates. Already a pretty grass at about 4 inches tall, and starting to ...Read More

H
H
Makawao, HI | June 2015 | negative

Highly invasive in the Hawaiian Islands. Forms dense cover in the understory of mesic to wet forests, crowding out and suppressing the re...Read More

T
Micanopy, FL | October 2012 | positive

Beautiful grasses when blooming or not blooming. Had it growing in part shade. It took a hard hit last winter and i totally lost one pl...Read More

J
Jacksonville, FL (Zone 8b) | August 2012 | neutral

Makes a very dramatic, arching clump for landscapes, but it reseeds very freely and can be invasive. I try to cut the flower heads off i...Read More

M
Yulee, FL (Zone 9a) | October 2009 | positive

I bought four small plants from Revlar Farms in Aug 08. They thrived and have tripled in size. I do not water them too much, I do not wan...Read More

J
Pasadena, CA (Zone 9b) | September 2009 | positive

Grows beatifully in shade to part sun here in Pasadena (rather dry Zone 9b), with average to little water. Can get a little rangy in ful...Read More

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