Prairie Moon Nursery :: Seeds :: Silphium terebinthinaceum (Prairie Dock)
Silphium terebinthinaceum (Prairie Dock)
Prairie Dock is among the taller and larger-leaved prairie plants, often maturing to 9' in height. Its sandpaper-textured leaves, 18" long and 12" wide, prove too coarse for most rabbits.  These leaves will mature in size in early summer and by late summer the flowering stalk will shoot up with attractive yellow composite flowers.  Because of its height, it competes well with aggressive prairie grasses such as Big Bluestem and Indian Grass.  Prairie Dock attracts bees, including honeybees and bumblebees.  Goldfinches eat and disperse the seeds, helping the plant self-propagate.

A member of the large Aster (Asteraceae) family, Prairie Dock, like most Silphium species, is extremely drought-resistant and long-lived; once it is established it can be difficult to move so choose your spot wisely in a garden setting.  It tends to bloom later than other Silphium (see "companion plants" above).  It may also be called Prairie Rosinweed.

Seeds / Packet
: 35
Seeds / Ounce: 1,000

Dormant bare root plants ship each year during optimal transplanting seasons: Spring (April - May) and Fall (October).

Potted plants come in a tray of 38 plants and ship mid-May through mid-July. Click here if you prefer to mix/match up to 6 species in a tray.
Details
Range Map
Catalog Number SIL58F
Scientific Name Silphium terebinthinaceum
Common Name Prairie Dock
Germination Code C(60)
Wetland Code FACU
Sun Exposure Prairie , Savanna
Soil Moisture Wet Mesic , Mesic , Dry Mesic
Height to 9 feet
Bloom Color Yellow
Bloom Time July , Aug , Sept
Plant Type Forbs (Wildflowers)
Availability Seeds , Roots , Pots
Economize; $ seed/oz $20/oz
Price:
Seeds
Quantity: Pricing: Order:
Packet $2.00
1/8 oz. $5.00
1/4 oz. $8.00
1/2 oz. $13.00
1 oz. $20.00
1 lb. $300.00
Bare Root Plants
Quantity: Pricing: # of Plants:
Out of stock
Potted Plants
Quantity: Pricing: Order:
Out of stock
 
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Detailed images

Silphium-terebinthinaceum-Prairie-Dock-plants Silphium-terebinthinaceum-Prairie-Dock-flower Silphium-terebinthinaceum-Prairie-Dock-leaves Silphium-terebinthinaceum-Prairie-Dock-flower Silphium-terebinthinaceum-Prairie-Dock-stem Silphium_terebinthinaceum_Prairie_Dock_seed Silphium-terebinthinaceum-Prairie-dock-root
Silphium terebinthinaceum (Prairie Dock)
Map Key
Present in state Present in county, native to state Present in county, not native to state  
Not present in state Present historically, now extirpated    
'FAQ' (Frequently Asked Questions) link

Companion Plants and Products

Silphium perfoliatum (Cup Plant) See details
Silphium perfoliatum (Cup Plant)
Seeds
Quantity: Pricing:
Packet $2.00
1/4 oz. $3.20
1/2 oz. $5.20
1 oz. $8.00
1 lb. $120.00
Bare Root Plants
Quantity: Pricing:
1 - 2 $5.00
3 - 11 $4.00
Cup Plant is hardy and strong, and very easy to identify because of the square stem and 'cup' leaves that hold water for birds, insects, and small mammals.

Silphium laciniatum (Compass Plant) See details
Silphium laciniatum (Compass Plant)
Seeds
Quantity: Pricing:
Packet $2.00
1/8 oz. $3.00
1/4 oz. $4.00
1/2 oz. $6.50
1 oz. $10.00
1 lb. $150.00
Bare Root Plants
Quantity: Pricing:
1 - 2 $6.00
3 - 11 $5.00
12 - 35 $3.50
36 - 99 $3.50
Potted Plants
Quantity: Pricing:
Tray of 38 $92.00
Compass Plant's name derived from the tendency of its flat leaves to orient themselves on a North-South axis.

Silphium integrifolium (Rosin Weed) See details
Silphium integrifolium (Rosin Weed)
Seeds
Quantity: Pricing:
Packet $2.00
1/4 oz. $3.20
1/2 oz. $5.20
1 oz. $8.00
1 lb. $120.00
Bare Root Plants
Quantity: Pricing:
Out of stock
Rosin Weed may be the best Silphium choice for a garden setting due to its shorter stature, ability to mature faster and tough stem that keeps it upright with little to no surrounding plant support.

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