Photo by Melody
Congratulations to all our photo contest participants! Check out the winning photos here. We will have the 2015 calendars available to order from Zazzle soon.

PlantFiles: Whole-leaf Rosinweed
Silphium integrifolium

bookmark
Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Silphium (SIL-phee-um) (Info)
Species: integrifolium (in-teg-ree-FOH-lee-um) (Info)

4 vendors have this plant for sale.

Category:
Perennials

Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
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)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By plutodrive
Thumbnail #1 of Silphium integrifolium by plutodrive

By plutodrive
Thumbnail #2 of Silphium integrifolium by plutodrive

By plutodrive
Thumbnail #3 of Silphium integrifolium by plutodrive

By Rickwebb
Thumbnail #4 of Silphium integrifolium by Rickwebb

By Rickwebb
Thumbnail #5 of Silphium integrifolium by Rickwebb

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive Rickwebb On Feb 7, 2014, Rickwebb from Downingtown, PA wrote:

It is a native forb of the Midwestern USA prairie that I see in prairie or American meadow restorations. It gets its name from having resinous juices. The flowers are good for pollinators and the nutritious seeds are loved by birds, like the other three similar Silphium of Cup-Plant, Compass-Plant, and Prairie Dock. Sold at native plant nurseries.

Regional...

This plant has been said to grow in the following regions:

Menifee, California
Denver, Colorado
Batavia, Illinois
Chicago, Illinois
Glen Ellyn, Illinois
Appleton, Wisconsin
Westfield, Wisconsin



We recommend Firefox
Overwhelmed? There's a lot to see here. Try starting at our homepage.

[ Home | About | Advertise | Media Kit | Mission | Featured Companies | Submit an Article | Terms of Use | Tour | Rules | Privacy Policy | Contact Us ]

Back to the top

Copyright © 2000-2014 Dave's Garden, an Internet Brands company. All Rights Reserved.
 

Hope for America